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Verified Reviews for Custom Home Building pros in Portola, CA
*The Angi rating for Custom Home Building companies in Portola, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Custom Home Building needs.
*The HomeAdvisor rating for Custom Home Building companies in Portola, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Custom Home Building needs.
Last update on November 20, 2025
Find Custom home builders in Portola
Evolution Drafting
Evolution Drafting
Customers say: Terrific value
2018 years of experience
Free onsite estimate
Our firm is a dynamic provider of drafting and house plan services, dedicated to turning your visions into tangible and pleasing structures. With a commitment to excellence, we bring expertise and innovation to every project we undertake. We specialize in comprehensive drafting services tailored to meet diverse client needs. Our offering include: Design: Crafting unique and functional designs that blend creativity with practicality. Drafting Services: Precision and attention to detail in creating accurate and detailed drafts for seamless project execution. 3D Modeling: Bringing designs to life with realistic 3D models that provide a vivid preview of the final structure. Project Management: From concept to completion, we offer end-to-end project management ensuring timely and efficient delivery. Interior Design: Enhancing spaces with innovative interior designs that harmonize aesthetics and functionality. Detail Services Offered: - Building Code Compliance - Construction Documentation - Renovation and Remodeling Plans About our Team: Our team comprises draftsman and project managers, each bringing a unique skill, style and experience to the table. Collaborative teamwork and alliance is at the core of our success, ensuring a holist approach to every project. We take pride in our commitment to delivering high-quality work on every project. Our rigorous quality control measures, pays attention to client requirements, and adherence to industry standards are the cornerstones of our success. Your satisfaction is our top priority and guarantee. At Evolution Drafting, we don't design structures; we create environments that inspire and endure. Work with us and experience the art of living.
"slow response times. no onsite visit, so had to confirm all measures myself. good product in the end."
jim E on September 2025
Our firm is a dynamic provider of drafting and house plan services, dedicated to turning your visions into tangible and pleasing structures. With a commitment to excellence, we bring expertise and innovation to every project we undertake. We specialize in comprehensive drafting services tailored to meet diverse client needs. Our offering include: Design: Crafting unique and functional designs that blend creativity with practicality. Drafting Services: Precision and attention to detail in creating accurate and detailed drafts for seamless project execution. 3D Modeling: Bringing designs to life with realistic 3D models that provide a vivid preview of the final structure. Project Management: From concept to completion, we offer end-to-end project management ensuring timely and efficient delivery. Interior Design: Enhancing spaces with innovative interior designs that harmonize aesthetics and functionality. Detail Services Offered: - Building Code Compliance - Construction Documentation - Renovation and Remodeling Plans About our Team: Our team comprises draftsman and project managers, each bringing a unique skill, style and experience to the table. Collaborative teamwork and alliance is at the core of our success, ensuring a holist approach to every project. We take pride in our commitment to delivering high-quality work on every project. Our rigorous quality control measures, pays attention to client requirements, and adherence to industry standards are the cornerstones of our success. Your satisfaction is our top priority and guarantee. At Evolution Drafting, we don't design structures; we create environments that inspire and endure. Work with us and experience the art of living.
"slow response times. no onsite visit, so had to confirm all measures myself. good product in the end."
jim E on September 2025
Barraza Construction, Inc.
Barraza Construction, Inc.
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2017 years of experience
Welcome to BARRAZA CONSTRUCTION INC! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you!
"Great service, everything exceed expectations."
Zack M on February 2023
Welcome to BARRAZA CONSTRUCTION INC! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you!
"Great service, everything exceed expectations."
Zack M on February 2023
Butterfly Valley Design & Build
Butterfly Valley Design & Build
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2017 years of experience
Butterfly Valley Design & Build is a team of innovative and driven experts who embody a relentless focus on the customer experience. We are obsessed with delivering inspired projects that improve people's lives and shatter the status quo. With our team of professionals, and using the latest designs, we can create a custom home that will turn your dreams into reality.
"High quality that lasts a long time."
Richard . on September 2019
Butterfly Valley Design & Build is a team of innovative and driven experts who embody a relentless focus on the customer experience. We are obsessed with delivering inspired projects that improve people's lives and shatter the status quo. With our team of professionals, and using the latest designs, we can create a custom home that will turn your dreams into reality.
"High quality that lasts a long time."
Richard . on September 2019
Sentri Homes
Sentri Homes
2023 years of experience
Free onsite estimate
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.
Environmental Testing & Research Laboratories, Inc
Environmental Testing & Research Laboratories, Inc
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.
"as advertised"
Nancy C on July 2018
ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.
"as advertised"
Nancy C on July 2018
Landmark Energy Upgrades
Landmark Energy Upgrades
Customers say: Super punctual
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
Whether your project is a new construction, custom built home, an existing remodel, or an energy efficient upgrade, Landmark Construction has the industry experience and skilled staff to make your construction project a success. Our goal is to save you money through energy-efficient construction. Landmark Construction is California’s premier Air-Conditioning Contractor and Heating Contractor. Along with HVAC contracting we can better regulate your home’s temperature with new insulation and a new roof. Landmark Construction doesn’t stop at just energy upgrades. When it comes to renovations of existing homes, we pride ourselves in the ability to maintain your home’s charm and style with solutions for every kind of interior need from tile, drywall accents and wainscoting detail, cabinetry and countertop selection, to redesigning entire interior floor plans. Our network of interior designers can help you get just the look you envisioned from your remodeling or new construction project. We proudly serve Southern California including Bel Air, San Marino, Malibu, Calabasas, Beverly Hills, Century City, Encino, Brentwood and everywhere in between! When clients want to build it strong, build it beautiful, they build it Landmark! Do not hesitate to contact us regarding your next general construction project in Southern California. We look forward to providing you with a free, no obligation consultation today!
"Ezra and Charles are very friendly and personable. That is, when they want to take your money. What good is a 12-year warranty if you start ignoring your customers at 2 years. I needed my HVAC replaced. Because the HVAC sits on my roof, I decided to redo the roof too. Ezra and Charles came out and were really friendly so I immediately had a good impression of them. Even though it would’ve been cheaper to go with a roofer and a separate HVAC company, I decided to go with Landmark Construction Crew, aka Landmark Energy Upgrades. I figured it would be a more seamless process for one company to do both. I got this done in December of 2016. The thing with a roof is that you don’t know if it’s a good job or not until it rains so I waited to write a review. Around January 2018 ( a little over a year later ) we got some much needed rain but unfortunately, I had a leak coming from one of my vents. I emailed Ezra and he sent out a roofer. The roofer came, looked at the vent, jumped up on the roof for ten minutes and said he was done. Months later, it rained again, it leaked again, I emailed Ezra again. I decided to take a closer look at the vent and noticed that there was sunlight in the ductwork. I figured sunlight equals gap somewhere. When the roofer came, I told him and he said it’s nothing, probably just a reflection, without even taking a look. Then the roofer tells me that the next time there is a leak, I need to call the HVAC guy because it’s not a roof problem. I couldn’t believe it so I told him that HIS company IS the HVAC guy!! I used one company to do the roof and the HVAC so there is NOBODY else to blame. So, he jumps back on the roof and was done and gone in 10 minutes. About a month goes by and the rain is back and so is my leak. It’s 2019 so it rained a lot this year. Good for California, bad for me. So, I emailed Ezra again. After a few weeks, no reply. So, I email him again with pictures, a few more weeks go by and no reply. So, I call him and he picked up the phone. He sounded surprised to hear from me (probably didn’t recognize my phone number) and I start telling him about the leak. He said he didn’t get my emails but just text him my address and he’ll send somebody. A couple of weeks goes by and nothing. So, I text him again and after weeks and weeks of waiting, no reply. I’ve emailed, called, and texted so, at this point, it’s very obvious he’s avoiding me. If you are looking for a friendly company that is willing to take your hard-earned cash then Landmark is for you. But if you’re looking for a company that is accountable for their work then look elsewhere. I know I am."
Tony T on March 2019
Whether your project is a new construction, custom built home, an existing remodel, or an energy efficient upgrade, Landmark Construction has the industry experience and skilled staff to make your construction project a success. Our goal is to save you money through energy-efficient construction. Landmark Construction is California’s premier Air-Conditioning Contractor and Heating Contractor. Along with HVAC contracting we can better regulate your home’s temperature with new insulation and a new roof. Landmark Construction doesn’t stop at just energy upgrades. When it comes to renovations of existing homes, we pride ourselves in the ability to maintain your home’s charm and style with solutions for every kind of interior need from tile, drywall accents and wainscoting detail, cabinetry and countertop selection, to redesigning entire interior floor plans. Our network of interior designers can help you get just the look you envisioned from your remodeling or new construction project. We proudly serve Southern California including Bel Air, San Marino, Malibu, Calabasas, Beverly Hills, Century City, Encino, Brentwood and everywhere in between! When clients want to build it strong, build it beautiful, they build it Landmark! Do not hesitate to contact us regarding your next general construction project in Southern California. We look forward to providing you with a free, no obligation consultation today!
"Ezra and Charles are very friendly and personable. That is, when they want to take your money. What good is a 12-year warranty if you start ignoring your customers at 2 years. I needed my HVAC replaced. Because the HVAC sits on my roof, I decided to redo the roof too. Ezra and Charles came out and were really friendly so I immediately had a good impression of them. Even though it would’ve been cheaper to go with a roofer and a separate HVAC company, I decided to go with Landmark Construction Crew, aka Landmark Energy Upgrades. I figured it would be a more seamless process for one company to do both. I got this done in December of 2016. The thing with a roof is that you don’t know if it’s a good job or not until it rains so I waited to write a review. Around January 2018 ( a little over a year later ) we got some much needed rain but unfortunately, I had a leak coming from one of my vents. I emailed Ezra and he sent out a roofer. The roofer came, looked at the vent, jumped up on the roof for ten minutes and said he was done. Months later, it rained again, it leaked again, I emailed Ezra again. I decided to take a closer look at the vent and noticed that there was sunlight in the ductwork. I figured sunlight equals gap somewhere. When the roofer came, I told him and he said it’s nothing, probably just a reflection, without even taking a look. Then the roofer tells me that the next time there is a leak, I need to call the HVAC guy because it’s not a roof problem. I couldn’t believe it so I told him that HIS company IS the HVAC guy!! I used one company to do the roof and the HVAC so there is NOBODY else to blame. So, he jumps back on the roof and was done and gone in 10 minutes. About a month goes by and the rain is back and so is my leak. It’s 2019 so it rained a lot this year. Good for California, bad for me. So, I emailed Ezra again. After a few weeks, no reply. So, I email him again with pictures, a few more weeks go by and no reply. So, I call him and he picked up the phone. He sounded surprised to hear from me (probably didn’t recognize my phone number) and I start telling him about the leak. He said he didn’t get my emails but just text him my address and he’ll send somebody. A couple of weeks goes by and nothing. So, I text him again and after weeks and weeks of waiting, no reply. I’ve emailed, called, and texted so, at this point, it’s very obvious he’s avoiding me. If you are looking for a friendly company that is willing to take your hard-earned cash then Landmark is for you. But if you’re looking for a company that is accountable for their work then look elsewhere. I know I am."
Tony T on March 2019
SafeRacks
SafeRacks
Customers say: Super punctual
2006 years of experience
SafeRacks is the premier provider of overhead garage storage. Our goal is to provide the highest quality ceiling racks designed to utilize wasted space in your garage. We pride ourselves on delivering the best product and supporting it with outstanding service. The SafeRacks patented design is intended to be the strongest overhead storage solution available with a lifetime warranty to back it up.
SafeRacks is the premier provider of overhead garage storage. Our goal is to provide the highest quality ceiling racks designed to utilize wasted space in your garage. We pride ourselves on delivering the best product and supporting it with outstanding service. The SafeRacks patented design is intended to be the strongest overhead storage solution available with a lifetime warranty to back it up.
Arcbazar Inc
Arcbazar Inc
Customers say: Super punctual
2011 years of experience
ARCBAZAR provides online architectural design. Services include: New Residential, Remodeling, Interior Design, Landscape, and Commercial Spaces. Clients launch a competition for a project online at ARCBAZAR.com by providing a brief description and images/dimensions. Several Architects & Designers participate in the competition. By the end, Clients receive multiple design packages and choose the best solution. To view completed projects, please visit www.arcbazar.com
"Good submitted project ideas and nice designs were provided"
Paul S on March 2020
ARCBAZAR provides online architectural design. Services include: New Residential, Remodeling, Interior Design, Landscape, and Commercial Spaces. Clients launch a competition for a project online at ARCBAZAR.com by providing a brief description and images/dimensions. Several Architects & Designers participate in the competition. By the end, Clients receive multiple design packages and choose the best solution. To view completed projects, please visit www.arcbazar.com
"Good submitted project ideas and nice designs were provided"
Paul S on March 2020
Ocean Seven Builders
Ocean Seven Builders
Customers say: Super punctual
1994 years of experience
Ocean Seven Roofing is Polyurethane foam roofing and roof build up Expert. We offer Quality service since 1994 for homes and business or Residential and Commercial in Southern and Northern California. Our Foam roofing and cool roof system installation has been the most efficient and the longest term Quality roofing under our resume. With 10/20 years warranty our foam roof system is prepared right and apply the most efficient way with the best applicators in California. We offer Rebates on cool Roof/Foam roof system. Our roof build up installation is exceptional with great service and quality repair. Torch down or hot mop we have the best crew and service for repair, Terr-off and Install new roof or maintain roofing.
"Needed a new roof and relied on Angie's list. Ocean Seven Builders always came out on top and now I know why. Could not have been easier. No high pressure. Just the facts presented so we could make our own decision. Scheduling was fine, always kept us in the loop. Crew was professional, careful not to damage anything like plants, etc. and cleaned up after themselves after each work day. Love our new roof. Very happy with their service. Highly recommend Ocean Seven Builders."
Harry E on January 2021
Ocean Seven Roofing is Polyurethane foam roofing and roof build up Expert. We offer Quality service since 1994 for homes and business or Residential and Commercial in Southern and Northern California. Our Foam roofing and cool roof system installation has been the most efficient and the longest term Quality roofing under our resume. With 10/20 years warranty our foam roof system is prepared right and apply the most efficient way with the best applicators in California. We offer Rebates on cool Roof/Foam roof system. Our roof build up installation is exceptional with great service and quality repair. Torch down or hot mop we have the best crew and service for repair, Terr-off and Install new roof or maintain roofing.
"Needed a new roof and relied on Angie's list. Ocean Seven Builders always came out on top and now I know why. Could not have been easier. No high pressure. Just the facts presented so we could make our own decision. Scheduling was fine, always kept us in the loop. Crew was professional, careful not to damage anything like plants, etc. and cleaned up after themselves after each work day. Love our new roof. Very happy with their service. Highly recommend Ocean Seven Builders."
Harry E on January 2021
DesignYourBasement.com
DesignYourBasement.com
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
***This is a Design Service only, utilizing online virtual platforms. We service the entire nation, but do not physically visit the property. We provide permit ready, 2D blueprints along with 3D renders. We are available to build in the Denver-Metro area. DesignYourBasement.com provides services for the design of basements, home remodels for any space, as well as new construction homes. Thanks to our online process the design happens right before your eyes while you are in the comfort of your own home while designing with one of our expert designers. Our very unique model allows you to be involved in the entire decision making process of how your dream space is created fueled by the ideas, guidance, and professional explanation of other variables or factors that must be accounted for. Our system is able to instantly render 3D representations for you to visualize the drawing as it is created to assist in the decision making process for creating your new space. Since our process implements a screen sharing platform, we are online we can design anywhere in the United States or Canada! Your final blueprint will be ready to submit to your local building department for approval. We add details and notes above and beyond requirements for any homeowner to easily interpret the drawing and great for the DIY builders. DesignYourBasement.com offers many consulting options including analyzing building estimates and contracts to ensure that each listed price includes what is required for the entire construction process as well as the details your plan calls for. Homeowners will have the knowledge to choose the best builder for their project. Peace of mind that the price you are given is all inclusive helps you avoid surprise fees after the contract has been signed.Please contact us for a complimentary online design consultation.
***This is a Design Service only, utilizing online virtual platforms. We service the entire nation, but do not physically visit the property. We provide permit ready, 2D blueprints along with 3D renders. We are available to build in the Denver-Metro area. DesignYourBasement.com provides services for the design of basements, home remodels for any space, as well as new construction homes. Thanks to our online process the design happens right before your eyes while you are in the comfort of your own home while designing with one of our expert designers. Our very unique model allows you to be involved in the entire decision making process of how your dream space is created fueled by the ideas, guidance, and professional explanation of other variables or factors that must be accounted for. Our system is able to instantly render 3D representations for you to visualize the drawing as it is created to assist in the decision making process for creating your new space. Since our process implements a screen sharing platform, we are online we can design anywhere in the United States or Canada! Your final blueprint will be ready to submit to your local building department for approval. We add details and notes above and beyond requirements for any homeowner to easily interpret the drawing and great for the DIY builders. DesignYourBasement.com offers many consulting options including analyzing building estimates and contracts to ensure that each listed price includes what is required for the entire construction process as well as the details your plan calls for. Homeowners will have the knowledge to choose the best builder for their project. Peace of mind that the price you are given is all inclusive helps you avoid surprise fees after the contract has been signed.Please contact us for a complimentary online design consultation.
Custom Home Builders questions, answered by experts
The Portola, CA homeowners’ guide to custom home building
From average costs to expert advice, get all the answers you need to get your job done.
Need to know how much blueprints cost for your new construction project? Use this comprehensive cost guide to get an accurate estimate for your build.
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Unsure of your home’s beginnings? This guide explains how to find the builder of a home, so you can work your way through until you find the info you need.
Find out how to hire a land surveyor from the prep stages all the way to signing the contract. Knowing what to look for will help you save time and money.
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