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    Verified home building services reviews

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Avatar for Sentri Homes

Sentri Homes

New on AngiNew on Angi
Approved Pro

Sentri Homes

New on AngiNew on Angi
Approved Pro
288 local quotes requested
2 years of experience

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.


Avatar for Opulent Design Build

Opulent Design Build

5.00(
1
)
Approved Pro

Opulent Design Build

5.00(
1
)
Approved Pro
37 local quotes requested
23 years of experience

Opulent Design Build is Orange County's premier design-build company. We take the complicated process of home design, building and remodeling and make it an experience that you will love! There's no need to fear the design and construction process. We personally handle every aspect of the design, permitting and construction project process. Opulent Design Build is truly a one-stop design-build company.

Opulent Design Build is Orange County's premier design-build company. We take the complicated process of home design, building and remodeling and make it an experience that you will love! There's no need to fear the design and construction process. We personally handle every aspect of the design, permitting and construction project process. Opulent Design Build is truly a one-stop design-build company.


Opulent Design Build

5.00(
20
)
Approved Pro

Opulent Design Build

5.00(
20
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
65 local quotes requested

Opulent Design Build . One point of contact from Start to Finish. Opulent Design Build takes the complicated process of home designing, building and remodeling and makes it an experience that you will love! There's no need to fear the design & construction process. Opulent Design Build personally handles every aspect of the construction process: design, engineering, site survey, permitting, construction and inspections. We are truly a "one-stop" design-build company.

"My wife and I were looking into adding some square footage to our home as well as remodel. We were going in circles trying to plan and budget and it honestly was one of the most stressful/hardest experiences of our marriage. That was until we stumbled upon Opulent. I do not remember how we found them, but man, I am so glad we did. Eddie and his whole team were OUTSTANDING throughout the whole process. They really made us feel like we were part of the Opulent Family as well as producing real results. They managed EVERYTHING just about perfectly. From dealing with the permit process to helping us figure out what we needed to fill our space with beautiful fixtures to actually getting the construction done. The preconstruction process was so simple thanks to their amazing team and construction flowed so smoothly. The field workers were respectful and clean every day. 10/10 cannot recommend enough. Thank you Opulent!!"

Shaun M on August 2025

Opulent Design Build . One point of contact from Start to Finish. Opulent Design Build takes the complicated process of home designing, building and remodeling and makes it an experience that you will love! There's no need to fear the design & construction process. Opulent Design Build personally handles every aspect of the construction process: design, engineering, site survey, permitting, construction and inspections. We are truly a "one-stop" design-build company.

"My wife and I were looking into adding some square footage to our home as well as remodel. We were going in circles trying to plan and budget and it honestly was one of the most stressful/hardest experiences of our marriage. That was until we stumbled upon Opulent. I do not remember how we found them, but man, I am so glad we did. Eddie and his whole team were OUTSTANDING throughout the whole process. They really made us feel like we were part of the Opulent Family as well as producing real results. They managed EVERYTHING just about perfectly. From dealing with the permit process to helping us figure out what we needed to fill our space with beautiful fixtures to actually getting the construction done. The preconstruction process was so simple thanks to their amazing team and construction flowed so smoothly. The field workers were respectful and clean every day. 10/10 cannot recommend enough. Thank you Opulent!!"

Shaun M on August 2025


Avatar for All Service Industries, Inc.

All Service Industries, Inc.

4.96(
12
)
Approved Pro

All Service Industries, Inc.

4.96(
12
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
38 years of experience

All Service Industries, inc., has been serving the Orange County Coastal Communities in California area for over 27 years! We offer Prompt and Professional Service with Quality Workmanship in which include: remodeling, building, painting, interior and exterior design, custom built homes, and most importantly customer service. We have many happy references available. Call us today to see why we come so highly recommended! You can start by visiting out website www.AllService911.com

"I called All Service out to replace cabinetry below and both sides of my kitchen sink, and to install a new kitchen floor due to a tube that suddenly burst below the kitchen sink. The technician was friendly, professional, outlined the estimate well, and made sure I was happy with the results as the job went along. His team did a great job and I would hire them again."

Terence W on January 2023

All Service Industries, inc., has been serving the Orange County Coastal Communities in California area for over 27 years! We offer Prompt and Professional Service with Quality Workmanship in which include: remodeling, building, painting, interior and exterior design, custom built homes, and most importantly customer service. We have many happy references available. Call us today to see why we come so highly recommended! You can start by visiting out website www.AllService911.com

"I called All Service out to replace cabinetry below and both sides of my kitchen sink, and to install a new kitchen floor due to a tube that suddenly burst below the kitchen sink. The technician was friendly, professional, outlined the estimate well, and made sure I was happy with the results as the job went along. His team did a great job and I would hire them again."

Terence W on January 2023


Avatar for R & L Group, Inc.

R & L Group, Inc.

5.00(
4
)
Approved Pro

R & L Group, Inc.

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 years of experience

R&L Construction Group has been providing construction services for 15 years. Our goal is to transform your vision into reality and create an enjoyable experience in the process. We start by understanding your vision and expectations, then we cost engineer and plan for your project, if possible, at this phase we will suggest how to value engineer finishes and fixtures to lower the overall cost. Throughout the construction phase we only use qualified employees and subcontractors that bring remarkable craftsmanship and attention to detail to the project. We make yourself available to you at all times and maintain constant communication and collaboration with you to deliver a transparent and hassle-free process. We strive to provide exceptional service while delivering quality, comfort, luxury and safety.

"Armin is a professional and detailed contractor. He holds a civil engineering degree and he really knows what he is doing. Our kitchen remodeling is a great success with his team. Will work with him again in the future."

Zizhao H on October 2021

R&L Construction Group has been providing construction services for 15 years. Our goal is to transform your vision into reality and create an enjoyable experience in the process. We start by understanding your vision and expectations, then we cost engineer and plan for your project, if possible, at this phase we will suggest how to value engineer finishes and fixtures to lower the overall cost. Throughout the construction phase we only use qualified employees and subcontractors that bring remarkable craftsmanship and attention to detail to the project. We make yourself available to you at all times and maintain constant communication and collaboration with you to deliver a transparent and hassle-free process. We strive to provide exceptional service while delivering quality, comfort, luxury and safety.

"Armin is a professional and detailed contractor. He holds a civil engineering degree and he really knows what he is doing. Our kitchen remodeling is a great success with his team. Will work with him again in the future."

Zizhao H on October 2021


Avatar for AGA Construction Inc

AGA Construction Inc

4.82(
108
)
Approved Pro

AGA Construction Inc

4.82(
108
)
Approved Pro
Customers say: True professional
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
745 local quotes requested

FREE estimates and 10% off for Angi's List members! A.G.A Construction, Inc. is a licensed, bonded and insured, full-service construction company. We offer services in both residential and commercial remodeling including, but not limited to, new construction, room additions, kitchen and bathroom remodeling. Our mission at A.G.A Construction is to provide excellent customer satisfaction and top-quality work. We work hard to maintain high standards of exceptional customer service and superiority that has become expected of us over the years. Whatever your remodeling needs are, we take the necessary time to discuss with you the wide variety of options, products, styles, specification and your desired budget available in order to make your vision a reality. When working with our team you can be sure that your remodeling project will exceed your expectations. With any remodeling job, a project is only as good as its foundation. The same is true for our company, which is built on a foundation of trust and strong relationships with our clients. As our saying goes “When we are done, you will be happy, and until you are happy, we are not done.”

"We started the process of building our detached ADU at the beginning of 2022. We hired an Architect, who drew up a plan to build a 1200 sq ft, 3 bedroom 2.5 bathroom house. After 14 months of waiting and addressing revisions required by the Los Angeles Department of Building and Safety we got our permit in “Ready to Issue” status. While waiting for city approval, we all started looking for a fair, reliable and honest contractor who would do good/solid construction. We started the process of interviewing contractors and getting bids for the job. After several meetings and several bids, we met Micky Kanian with “AGA Construction”. We found Micky on Yelp. One of his references took us thru an ADU that Micky and team built for his elderly mother-in-law to live in. This family could not say enough good things about Micky and team. They took us thru the property and explained their experience in great detail. We saw another beautiful AGA project, a 5k sq ft + project that was in progress and really knew that day that we’d found our contractor. We weren’t quite ready to pull the trigger for personal reasons, so we put the project on hold. Meanwhile, we continued to collect a couple of other bids that were already in progress. During this process, AGA kept in touch with us. They checked in every few weeks or so, without being pushy or intrusive. After a delay of about 9 months, we decided to move forward with AGA construction. No one is a tougher critic than me. I was dreading this project because of the amount of stress that I knew we’d be under. Both financially and mentally. We’ve all heard and/or lived thru the horror of a construction project gone wrong. I won’t bury the lead any further. We love our ADU!!!!! We started the project on Jan 31st of 2024. We were told that the project would take 6-8 months. We lost the first 6 weeks or so with the heavy rains from last year, but even with that delay, we were mostly done with the project by the middle of August. We ran into the “expected” unknowns and surprises – all dealt with fairly and quickly by Micky and team. I would like to call out Joachin who was amazing. We always felt like we were in the best of qualified hands during this entire process. All inspections were signed off, the last checks were written, and we now have a gorgeous new home behind the main house on that property. We were so happy with the project and trusted Micky and Joachin so much, that we immediately launched a second project of gutting and renovating a very large master bathroom for my In-Laws. That job started on September 23rd and was done the first or second week of November as promised. It would’ve been done sooner, but we had a little “client indecision” that cost us about a week or two. All in all, I would highly recommend Micky and his crew, and we plan to use them for as long as they are in business or until my family and I run out of projects."

Howard W on February 2025

FREE estimates and 10% off for Angi's List members! A.G.A Construction, Inc. is a licensed, bonded and insured, full-service construction company. We offer services in both residential and commercial remodeling including, but not limited to, new construction, room additions, kitchen and bathroom remodeling. Our mission at A.G.A Construction is to provide excellent customer satisfaction and top-quality work. We work hard to maintain high standards of exceptional customer service and superiority that has become expected of us over the years. Whatever your remodeling needs are, we take the necessary time to discuss with you the wide variety of options, products, styles, specification and your desired budget available in order to make your vision a reality. When working with our team you can be sure that your remodeling project will exceed your expectations. With any remodeling job, a project is only as good as its foundation. The same is true for our company, which is built on a foundation of trust and strong relationships with our clients. As our saying goes “When we are done, you will be happy, and until you are happy, we are not done.”

"We started the process of building our detached ADU at the beginning of 2022. We hired an Architect, who drew up a plan to build a 1200 sq ft, 3 bedroom 2.5 bathroom house. After 14 months of waiting and addressing revisions required by the Los Angeles Department of Building and Safety we got our permit in “Ready to Issue” status. While waiting for city approval, we all started looking for a fair, reliable and honest contractor who would do good/solid construction. We started the process of interviewing contractors and getting bids for the job. After several meetings and several bids, we met Micky Kanian with “AGA Construction”. We found Micky on Yelp. One of his references took us thru an ADU that Micky and team built for his elderly mother-in-law to live in. This family could not say enough good things about Micky and team. They took us thru the property and explained their experience in great detail. We saw another beautiful AGA project, a 5k sq ft + project that was in progress and really knew that day that we’d found our contractor. We weren’t quite ready to pull the trigger for personal reasons, so we put the project on hold. Meanwhile, we continued to collect a couple of other bids that were already in progress. During this process, AGA kept in touch with us. They checked in every few weeks or so, without being pushy or intrusive. After a delay of about 9 months, we decided to move forward with AGA construction. No one is a tougher critic than me. I was dreading this project because of the amount of stress that I knew we’d be under. Both financially and mentally. We’ve all heard and/or lived thru the horror of a construction project gone wrong. I won’t bury the lead any further. We love our ADU!!!!! We started the project on Jan 31st of 2024. We were told that the project would take 6-8 months. We lost the first 6 weeks or so with the heavy rains from last year, but even with that delay, we were mostly done with the project by the middle of August. We ran into the “expected” unknowns and surprises – all dealt with fairly and quickly by Micky and team. I would like to call out Joachin who was amazing. We always felt like we were in the best of qualified hands during this entire process. All inspections were signed off, the last checks were written, and we now have a gorgeous new home behind the main house on that property. We were so happy with the project and trusted Micky and Joachin so much, that we immediately launched a second project of gutting and renovating a very large master bathroom for my In-Laws. That job started on September 23rd and was done the first or second week of November as promised. It would’ve been done sooner, but we had a little “client indecision” that cost us about a week or two. All in all, I would highly recommend Micky and his crew, and we plan to use them for as long as they are in business or until my family and I run out of projects."

Howard W on February 2025


Avatar for Laguna Bay Developing

Laguna Bay Developing

4.56(
9
)
Approved Pro

Laguna Bay Developing

4.56(
9
)
Approved Pro
Customers say: Quick response
257 local quotes requested
Emergency services offered

We are a building, architectural design company that strongly believes in adding value with quality remodeling and affordable pricing. We specialize in crafting your dreams. Our owner, David Fidman, has experience since the 1990's in new construction and remodeling of homes. Our enthusiastic and fully licensed and bonded team can exceed your hopes for any project with our personalized service, whether it is constructing your dream home, renovating and upgrading your curb appeal, or remodeling your existing floor plan. As a boutique firm, we optimize personalization by getting to know our customers needs and wants through an attentive project management style. At Laguna Bay Developing, we want this experience to be as an exciting experience as it is rewarding, from the design plans and material selections to the permit approval and construction process, we will be there for every step, we love to see our clients dreams realized!

"I had an excellent experience working with Laguna Bay Developing. From the initial call and quote all the way through to project completion, they were extremely responsive and professional. Their quote was detailed and transparent, making it easy to understand exactly what I was paying for—no surprises or hidden costs. The work itself was completed on schedule and to a high standard. The team was respectful, organized, and clearly took pride in their work. Communication throughout the process was consistent and clear, which gave me confidence every step of the way. I especially appreciated their attention to detail and willingness to answer any questions I had. It’s not easy to find a company that combines fair pricing, reliability, and great workmanship, but they delivered on all fronts. Highly recommended!"

Steve R on March 2025

We are a building, architectural design company that strongly believes in adding value with quality remodeling and affordable pricing. We specialize in crafting your dreams. Our owner, David Fidman, has experience since the 1990's in new construction and remodeling of homes. Our enthusiastic and fully licensed and bonded team can exceed your hopes for any project with our personalized service, whether it is constructing your dream home, renovating and upgrading your curb appeal, or remodeling your existing floor plan. As a boutique firm, we optimize personalization by getting to know our customers needs and wants through an attentive project management style. At Laguna Bay Developing, we want this experience to be as an exciting experience as it is rewarding, from the design plans and material selections to the permit approval and construction process, we will be there for every step, we love to see our clients dreams realized!

"I had an excellent experience working with Laguna Bay Developing. From the initial call and quote all the way through to project completion, they were extremely responsive and professional. Their quote was detailed and transparent, making it easy to understand exactly what I was paying for—no surprises or hidden costs. The work itself was completed on schedule and to a high standard. The team was respectful, organized, and clearly took pride in their work. Communication throughout the process was consistent and clear, which gave me confidence every step of the way. I especially appreciated their attention to detail and willingness to answer any questions I had. It’s not easy to find a company that combines fair pricing, reliability, and great workmanship, but they delivered on all fronts. Highly recommended!"

Steve R on March 2025


Avatar for Supreme Remodeling Inc

Supreme Remodeling Inc

4.76(
310
)
Approved Pro

Supreme Remodeling Inc

4.76(
310
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
1098 local quotes requested

Complete remodeling and new construction general contractors near you, Supreme Remodeling, Inc., will masterfully build from your new construction dream to meet the specifications for your exquisite new construction reality. Licensed, bonded, and insured, please visit supremeremodelinginc.com galleries for great examples in exquisitely realized new construction. Great builders in life begat great buildings of life. Building a safe and responsible structure from the instructions of a well conceived design that has incorporated your needs and wants while conveying your story artfully demands Supreme Remodeling, Inc.’s team of craftsmen that awaken with passion for their craft and care about your project’s success. You will notice your goals are our focus from the first moment you meet us. When it comes to any of your project requests: New Construction; Home Additions; Bathroom Remodeling; Kitchen Remodeling; Garage Conversions; ADUs; Home Construction and beyond. We will build a structure—reinforcing comfort systems reducing and absorbing outdoor and indoor element feedback, enhancing your privacy, forming a more relaxing environment. From paper to reality, soil conditions, climate, your home’s envelope, insulation and air sealing, windows, doors, skylights, daylighting, material thermal conductivity, small to large electrical appliances. We are building your vision with a unique respect for geology and form—establishing a perfect safe foundation. Various colours, textures, and materials, closures and openings such as doors, windows, siding, accents with trim, punctuated by great lighting, elevating your home's tone and positive energy flow —a fulfiling oasis. A business built over decades of hard work and passion for ethical construction is the core of our story. We look forward with pleasure—creating and building your new construction masterpiece that runneth over with fond memories—your space of luxurious function and glorious fulfillment enhanced by your story.

"We did a 3 room kitchen and bath remodel in just under 3 months, and we are over the moon with how well everything came out! Micky and his team are simply superb — every team he brought in did top notch work, including tiles, flooring, plumbing, electrical, countertop, cabinets, glass, stucco, windows, drywall, and more. Micky coordinated everything to perfection, ensuring the project was progressing day to day, sometimes hour by hour. The only “negative” was that we had to work hard to keep up with their impressive pace (in terms of making decisions and ordering needed supplies) and it was well worth it! We are now starting an ADU conversion and we can’t wait for the results."

Gerald C on July 2025

Complete remodeling and new construction general contractors near you, Supreme Remodeling, Inc., will masterfully build from your new construction dream to meet the specifications for your exquisite new construction reality. Licensed, bonded, and insured, please visit supremeremodelinginc.com galleries for great examples in exquisitely realized new construction. Great builders in life begat great buildings of life. Building a safe and responsible structure from the instructions of a well conceived design that has incorporated your needs and wants while conveying your story artfully demands Supreme Remodeling, Inc.’s team of craftsmen that awaken with passion for their craft and care about your project’s success. You will notice your goals are our focus from the first moment you meet us. When it comes to any of your project requests: New Construction; Home Additions; Bathroom Remodeling; Kitchen Remodeling; Garage Conversions; ADUs; Home Construction and beyond. We will build a structure—reinforcing comfort systems reducing and absorbing outdoor and indoor element feedback, enhancing your privacy, forming a more relaxing environment. From paper to reality, soil conditions, climate, your home’s envelope, insulation and air sealing, windows, doors, skylights, daylighting, material thermal conductivity, small to large electrical appliances. We are building your vision with a unique respect for geology and form—establishing a perfect safe foundation. Various colours, textures, and materials, closures and openings such as doors, windows, siding, accents with trim, punctuated by great lighting, elevating your home's tone and positive energy flow —a fulfiling oasis. A business built over decades of hard work and passion for ethical construction is the core of our story. We look forward with pleasure—creating and building your new construction masterpiece that runneth over with fond memories—your space of luxurious function and glorious fulfillment enhanced by your story.

"We did a 3 room kitchen and bath remodel in just under 3 months, and we are over the moon with how well everything came out! Micky and his team are simply superb — every team he brought in did top notch work, including tiles, flooring, plumbing, electrical, countertop, cabinets, glass, stucco, windows, drywall, and more. Micky coordinated everything to perfection, ensuring the project was progressing day to day, sometimes hour by hour. The only “negative” was that we had to work hard to keep up with their impressive pace (in terms of making decisions and ordering needed supplies) and it was well worth it! We are now starting an ADU conversion and we can’t wait for the results."

Gerald C on July 2025


Avatar for Mark Lewis & Son Construction

Mark Lewis & Son Construction

4.90(
21
)
Approved Pro

Mark Lewis & Son Construction

4.90(
21
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
95 local quotes requested

We are a leader in providing value-added construction services through Long Beach, Orange & So. Los Angeles Counties for over 30 years. We have a full time highly trained crew and our subcontractors are skilled, licensed tradesmen. Our pledge is to achieve a high level of satisfaction and to establish lasting relationships with our customers by providing quality craftsmanship, attention to detail, and earning your trust through exceptional performance throughout the construction process…. This is the cornerstone of all of our projects.

"Good customer service and quality work."

Tyanne P on January 2024

We are a leader in providing value-added construction services through Long Beach, Orange & So. Los Angeles Counties for over 30 years. We have a full time highly trained crew and our subcontractors are skilled, licensed tradesmen. Our pledge is to achieve a high level of satisfaction and to establish lasting relationships with our customers by providing quality craftsmanship, attention to detail, and earning your trust through exceptional performance throughout the construction process…. This is the cornerstone of all of our projects.

"Good customer service and quality work."

Tyanne P on January 2024


Bottom Up Construction INC

5.00(
4
)
Approved Pro

Bottom Up Construction INC

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
291 local quotes requested

We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!

"When we decided to update and refresh our condo in the Marina District, we got bids from several contractors. We felt that Luis, from R. M. Design, best understood our vision, his bid was reasonable, and his timeframe for starting the work coincided with our schedule. We very much appreciated that throughout the process Luis listened to our ideas while also giving us his expert advice. We know what we like, but he has a good eye and lots of experience. We know that his input and suggestions greatly improved the outcome of our project. We have always loved our place, but now we love it so much more. Also, Luis and his crew worked very well with our HOA association which has several rules and regulations regarding contractors and improvements. We had no complaints from the HOA nor our neighbors. That was much appreciated by us."

Susan P on February 2025

We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!

"When we decided to update and refresh our condo in the Marina District, we got bids from several contractors. We felt that Luis, from R. M. Design, best understood our vision, his bid was reasonable, and his timeframe for starting the work coincided with our schedule. We very much appreciated that throughout the process Luis listened to our ideas while also giving us his expert advice. We know what we like, but he has a good eye and lots of experience. We know that his input and suggestions greatly improved the outcome of our project. We have always loved our place, but now we love it so much more. Also, Luis and his crew worked very well with our HOA association which has several rules and regulations regarding contractors and improvements. We had no complaints from the HOA nor our neighbors. That was much appreciated by us."

Susan P on February 2025

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Home Building questions, answered by experts

Building a house is generally more expensive upfront than moving an existing one. However, the total cost depends on factors such as location, size, materials, labor, and permits. Moving a house can incur significant expenses for transportation, permits, site preparation, and renovations. On the other hand, building a new house allows for customization and may have lower long-term maintenance costs.

Prefab kits like a small sunroom for around $20,000 or even a basic gazebo roof for as little as $60 can save you big over professional installation. However, you lose the option for customization, and these structures tend not to last nearly as long. As for bigger projects like a deck or patio, you shouldn’t go with the DIY route unless you’re fully prepped with the tools and know-how to get it done right. Mistakes can be frustrating and costly, so choose a pro if you’re looking to eliminate your risk of error.

Local regulations dictate how big an ADU can be, and there may also be restrictions on the percentage of the main residence’s square footage an ADU can have. In most cases, an ADU must be smaller than the main residence, but check with your local building authority to confirm restrictions on ADU size.

Home additions cost between $22,000 and $84,000, with the average addition totaling $51,000. Project costs can vary greatly depending on the type of addition and the required work to complete it. Homeowners can expect to pay between $80 and $210 per square foot for an addition. Conversions of existing space will sit toward the lower end of that range, while bump-outs and new construction add-ons will push toward the higher end.

Complex plumbing is tricky and expensive in an off-the-ground dwelling like this. By considering options like composting toilets, rainwater collection, and gray-water sinks, you save money and help the environment. 

The Corona Del Mar, CA homeowners’ guide to home building services

From average costs to expert advice, get all the answers you need to get your job done.