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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon50
    Verified custom home building reviews

Find Custom home builders in Westlake Village

Avatar for So Cal Builders & Design Inc

So Cal Builders & Design Inc

4.60(
223
)
Approved Pro

So Cal Builders & Design Inc

4.60(
223
)
Approved Pro
Customers say: Quality work
905 local quotes requested
43 years of experience

So Cal Builders & Design have been helping the homes throughout California look perfect one nail and brick at a time! With the best prices and highest standard of service, we can deliver the kitchen or bathroom of your dreams on time and on budget! Our staff of trained technicians will build your addition or remodel to your specifications; using only the finest quality materials and the most up-to-date building procedures. We also have in house masonry service as well as perform a number of other services such as plumbing, lighting, painting, patios, and much more. Because we do it all ourselves, we eliminate miscommunication, stress and down time. We don’t use outside contractors or fancy gimmicks to get our customers. We combine new and modern building practices with tried and true hard work to deliver a work of art every time and that is why our customers make us #1. Request Your Free Estimate Voice Star: (888) 284-9122.

"Very good company . I am very satisfied with their professionalism . Highly recommended this company"

Leta W on December 2025

So Cal Builders & Design have been helping the homes throughout California look perfect one nail and brick at a time! With the best prices and highest standard of service, we can deliver the kitchen or bathroom of your dreams on time and on budget! Our staff of trained technicians will build your addition or remodel to your specifications; using only the finest quality materials and the most up-to-date building procedures. We also have in house masonry service as well as perform a number of other services such as plumbing, lighting, painting, patios, and much more. Because we do it all ourselves, we eliminate miscommunication, stress and down time. We don’t use outside contractors or fancy gimmicks to get our customers. We combine new and modern building practices with tried and true hard work to deliver a work of art every time and that is why our customers make us #1. Request Your Free Estimate Voice Star: (888) 284-9122.

"Very good company . I am very satisfied with their professionalism . Highly recommended this company"

Leta W on December 2025


Avatar for Sentri Homes

Sentri Homes

New on AngiNew on Angi
Approved Pro

Sentri Homes

New on AngiNew on Angi
Approved Pro
308 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 HIC Builders, Inc.

HIC Builders, Inc.

5.00(
11
)
Approved Pro

HIC Builders, Inc.

5.00(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1269 local quotes requested

HIC ( Home Ideas and Construction ) is a Family owned Business we are construction company. We look forward to coming out to your home and exploring the best, most efficient and budget conscious way we can upgrade you home. Specialize in Remodeling kitchens, bathrooms, pavers, outdoor landscape, patio enclosures, painting and ADU's to garage conversion from blueprinting to city permits we can walk you thru . We know that you are putting your faith and trust in your contractor, we work hard to earn your trust and satisfaction. Our team of experts offers you the latest modern and eco-friendly, materials and aesthetic work that you can imagine.

"ADU construction Plumbing, electrical, drywall, Painting"

Elbia M on February 2025

HIC ( Home Ideas and Construction ) is a Family owned Business we are construction company. We look forward to coming out to your home and exploring the best, most efficient and budget conscious way we can upgrade you home. Specialize in Remodeling kitchens, bathrooms, pavers, outdoor landscape, patio enclosures, painting and ADU's to garage conversion from blueprinting to city permits we can walk you thru . We know that you are putting your faith and trust in your contractor, we work hard to earn your trust and satisfaction. Our team of experts offers you the latest modern and eco-friendly, materials and aesthetic work that you can imagine.

"ADU construction Plumbing, electrical, drywall, Painting"

Elbia M on February 2025


Avatar for PETER T ERDELYI & ASSOCIATES INC

PETER T ERDELYI & ASSOCIATES INC

4.75(
8
)
Approved Pro

PETER T ERDELYI & ASSOCIATES INC

4.75(
8
)
Approved Pro
Customers say: Quality work
62 local quotes requested
49 years of experience

Whether you're upgrading an existing structure or building from the ground up, Peter T. Erdelyi & Associates, Inc has the expertise to oversee your project through completion. We have designed more than 10,000 structures in the Los Angeles area over the past four decades; from apartment buildings to new single family homes to additions and remodels both for residential and commercial clients. Our team of professional engineers, drafters, expeditors and project staff will deliver plans that withstand the test of time.

"The work Erdelyi associates did is great, but communication and timeliness were lacking. I didn’t have a consistent point of contact throughout the project - it just seems my project was handed off from one person to the next with no continuity and I had to proactively reach out for updates."

Stefan W on September 2022

Whether you're upgrading an existing structure or building from the ground up, Peter T. Erdelyi & Associates, Inc has the expertise to oversee your project through completion. We have designed more than 10,000 structures in the Los Angeles area over the past four decades; from apartment buildings to new single family homes to additions and remodels both for residential and commercial clients. Our team of professional engineers, drafters, expeditors and project staff will deliver plans that withstand the test of time.

"The work Erdelyi associates did is great, but communication and timeliness were lacking. I didn’t have a consistent point of contact throughout the project - it just seems my project was handed off from one person to the next with no continuity and I had to proactively reach out for updates."

Stefan W on September 2022


Avatar for Arnold's Remodeling

Arnold's Remodeling

New on AngiNew on Angi
Approved Pro

Arnold's Remodeling

New on AngiNew on Angi
Approved Pro
18 years of experience
Free onsite estimate

Arnold's Remodeling is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

Arnold's Remodeling is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.


Avatar for Jon Edward Construction Inc.

Jon Edward Construction Inc.

New on AngiNew on Angi
Approved Pro

Jon Edward Construction Inc.

New on AngiNew on Angi
Approved Pro
2 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business


Avatar for Olalde Group, Inc.

Olalde Group, Inc.

5.00(
2
)
Approved Pro

Olalde Group, Inc.

5.00(
2
)
Approved Pro
Customers say: Quick response
6 years of experience
Free onsite estimate

Olalde Group, Inc., is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade, combined with ability makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. Please give us a call today!

"David and Efrain did an amazing job converting our oversized 2 car garage into a one bedroom apartment. They were very attentive, cost conscious and efficient! They were on hand monitoring the subcontractors and making sure the job was done correctly. They did a great job and we are very gratefully for their hard work!"

Darlene J on October 2025

Olalde Group, Inc., is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade, combined with ability makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. Please give us a call today!

"David and Efrain did an amazing job converting our oversized 2 car garage into a one bedroom apartment. They were very attentive, cost conscious and efficient! They were on hand monitoring the subcontractors and making sure the job was done correctly. They did a great job and we are very gratefully for their hard work!"

Darlene J on October 2025


Avatar for Signature Group Architects

Signature Group Architects

5.00(
4
)
Approved Pro

Signature Group Architects

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

We are a architectural design company that specializes in new custom residential design, residential renovations and additions, medical and business office tenant improvements, and a variety of interior design and spatial planning projects. We take pride in our ability to exceed expectations in all aspects of business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

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Steve W on August 2017

We are a architectural design company that specializes in new custom residential design, residential renovations and additions, medical and business office tenant improvements, and a variety of interior design and spatial planning projects. We take pride in our ability to exceed expectations in all aspects of business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"null"

Steve W on August 2017


Avatar for Ilya Engineering

Ilya Engineering

4.61(
18
)
Approved Pro

Ilya Engineering

4.61(
18
)
Approved Pro
Customers say: Terrific value
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
23 years of experience

We are licensed, reputable structural design and construction company that specializes in a variety of design (Wood, Concrete, Steel, and masonry). We take pride in our ability to exceed expectations in all aspects of the business.We work closely with clients during the design and construction phases.Our services include: 1- Producing the structural design of projects from concept design through construction 2-Design of new structures, renovation of existing structures, and seismic retrofitting 3-Forensic engineering and Preparing technical reports 4-Site visit and structural evaluation reports

"Value was good but he bailed out on us after being impatient on the very last changes before inspection. Left us in a horrible situation and delayed project. Horrible communication skills. Very saddened."

Sam S on September 2023

We are licensed, reputable structural design and construction company that specializes in a variety of design (Wood, Concrete, Steel, and masonry). We take pride in our ability to exceed expectations in all aspects of the business.We work closely with clients during the design and construction phases.Our services include: 1- Producing the structural design of projects from concept design through construction 2-Design of new structures, renovation of existing structures, and seismic retrofitting 3-Forensic engineering and Preparing technical reports 4-Site visit and structural evaluation reports

"Value was good but he bailed out on us after being impatient on the very last changes before inspection. Left us in a horrible situation and delayed project. Horrible communication skills. Very saddened."

Sam S on September 2023


Avatar for West Side Builder

West Side Builder

5.00(
7
)
Approved Pro

West Side Builder

5.00(
7
)
Approved Pro
Customers say: Quick response
4 years of experience
Free onsite estimate

We are a locally owned and operated company that values honesty, integrity, and will treat your home as if it were our own. We have many years of experience to give you confidence that we are your number one choice for your next home project. You will find us to be competitively priced, while still paying close attention to the details of each and every project that we are involved with. We take pride in building long lasting relationships and look forward to hearing from you!

"They were on time and they did a great job"

Katie G on February 2022

We are a locally owned and operated company that values honesty, integrity, and will treat your home as if it were our own. We have many years of experience to give you confidence that we are your number one choice for your next home project. You will find us to be competitively priced, while still paying close attention to the details of each and every project that we are involved with. We take pride in building long lasting relationships and look forward to hearing from you!

"They were on time and they did a great job"

Katie G on February 2022

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Custom Home Builders questions, answered by experts

The cost of a home renovation depends on its complexity and extent. A large remodeling project may top $71,000, while a smaller project may cost around $15,000. Using a home renovation cost estimator before you begin can give you an idea of what you can expect to pay to revamp your home.

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.

It usually takes around four to six months to build and install a modular home, although your timeline could go up to around eight months if there are delays in the manufacturing or permitting process. Heavy site preparation and foundation pouring can extend that timeline if you need them, as can customizations you want for your modular home. Your modular home company should be able to provide an estimate for the construction timeline before you sign any contracts or agree to any work.

Custom homes can take an average of 18 months to build, mainly due to the lengthy design process, and most projects take somewhere between 12 and 24 months. When you work with the right custom home builders near you, they can help you map the road ahead and understand what can speed up or delay the timeline. Choosing locally available materials, for example, can speed things up without losing that customized touch.

While some highly experienced homeowners can frame a house independently, it is not advisable. You will need ample carpentry experience, a team of helpers, and professionals to sign off on your work to meet local building codes. For the safest outcome, we recommend buying or building a house with the guidance of professionals.

The Westlake Village, CA homeowners’ guide to custom home building

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

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