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Verified Reviews for Custom Home Building pros in Sonoma, CA
*The Angi rating for Custom Home Building companies in Sonoma, 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 Sonoma, 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 December 12, 2025
Find Custom home builders in Sonoma

IVP Design Studio
IVP Design Studio
Igino Pellizzari is the Sole Proprietor of IVP Design Studio. He has been involved in building design for over 35-years in the San Francisco Bay Area . From 2004 to 2012 he was a Principal and Director of Design of the licensed architectural firm Studio Abitare in Emeryville, CA. Currently Igino is providing his services as a Residential Building Designer under California Business and Professions Code 5537 that does not require a license. If the scope of a project exceeds Section 5537 limitations, then Igino works with a registered structural engineer who will provide the specifications and calculations for that scope plus sign and stamp the documents. This is an invitation to work together, to begin a conversation to understand your goals, explore options and opportunities, and get to know each other so that we may collaborate to arrive at the best solution to achieve your objectives. Igino would look forward to the meeting with you to start the process and begin next steps.
" After purchasing our historically registered Maybeck house which had been neglected for years, Igino worked with us to bring the house up to current building standards (new foundation, electrical, plumbing, and most recently, taking on the challenge of replacing a chimney situated in the middle of the house.) In addition to these basic but very important improvements, Igino worked his way through the rest of the house, interior and exterior, consulting with us and making updates in keeping with the design integrity of the home (including a full kitchen re-model.) Finally Igino re-designed and managed from the bottom up (foundation to new pitched roof) the construction of our backyard cottage for which he received a design award from the Piedmont Architectural Design Committee. Igino is a pleasure to work with. He listens. He communicates well. He pays attention to the budget. He’s dedicated to getting the job done right. "
William F on September 2025
Igino Pellizzari is the Sole Proprietor of IVP Design Studio. He has been involved in building design for over 35-years in the San Francisco Bay Area . From 2004 to 2012 he was a Principal and Director of Design of the licensed architectural firm Studio Abitare in Emeryville, CA. Currently Igino is providing his services as a Residential Building Designer under California Business and Professions Code 5537 that does not require a license. If the scope of a project exceeds Section 5537 limitations, then Igino works with a registered structural engineer who will provide the specifications and calculations for that scope plus sign and stamp the documents. This is an invitation to work together, to begin a conversation to understand your goals, explore options and opportunities, and get to know each other so that we may collaborate to arrive at the best solution to achieve your objectives. Igino would look forward to the meeting with you to start the process and begin next steps.
" After purchasing our historically registered Maybeck house which had been neglected for years, Igino worked with us to bring the house up to current building standards (new foundation, electrical, plumbing, and most recently, taking on the challenge of replacing a chimney situated in the middle of the house.) In addition to these basic but very important improvements, Igino worked his way through the rest of the house, interior and exterior, consulting with us and making updates in keeping with the design integrity of the home (including a full kitchen re-model.) Finally Igino re-designed and managed from the bottom up (foundation to new pitched roof) the construction of our backyard cottage for which he received a design award from the Piedmont Architectural Design Committee. Igino is a pleasure to work with. He listens. He communicates well. He pays attention to the budget. He’s dedicated to getting the job done right. "
William F on September 2025

Whitfield Architects, Inc.
Whitfield Architects, Inc.
Whitfield Architects : CLIENT-FIRST SOLUTIONS Please write or call directly with any questions (The fees Angi charges us mean we unfortunately cannot respond to questions through the app.) [email protected] 415.724.6279 We are dedicated to providing efficient and effective custom solutions for our clients' projects large or small. Efficient: Integrated 3D modeling insure rapid design and production; flexible outcomes tailored to each project. Effective: Careful listening and communication to understand, document and achieve our client's goals and aspirations. Service-centered: Face-to-face House-call meetings, project-specific designers Respectful: Transparent finances, zero up-charge on reimbursements Call Whitfield Architects today!
"David is an amazing professional. Very knowledgeable and helped us with all our needs. "
Julia P on October 2025
Whitfield Architects : CLIENT-FIRST SOLUTIONS Please write or call directly with any questions (The fees Angi charges us mean we unfortunately cannot respond to questions through the app.) [email protected] 415.724.6279 We are dedicated to providing efficient and effective custom solutions for our clients' projects large or small. Efficient: Integrated 3D modeling insure rapid design and production; flexible outcomes tailored to each project. Effective: Careful listening and communication to understand, document and achieve our client's goals and aspirations. Service-centered: Face-to-face House-call meetings, project-specific designers Respectful: Transparent finances, zero up-charge on reimbursements Call Whitfield Architects today!
"David is an amazing professional. Very knowledgeable and helped us with all our needs. "
Julia P on October 2025

RPS Design
RPS Design
RPS Design has been helping homeowners in the North Bay and beyond to realize their dreams since 2003. We work closely with our clients to translate their vision into a built environment that is unique to each project. We enjoy exploring diverse design styles and strive to adapt to the homeowner's tastes. Our approach to design examines all aspects of the project needed to deliver a beautiful and functional product that satisfies the client's needs and wants.
"Outstanding. Great to work with. Provides the direction and guidance throughout the project! Can?t go wrong with Rob"
Steve S on August 2021
RPS Design has been helping homeowners in the North Bay and beyond to realize their dreams since 2003. We work closely with our clients to translate their vision into a built environment that is unique to each project. We enjoy exploring diverse design styles and strive to adapt to the homeowner's tastes. Our approach to design examines all aspects of the project needed to deliver a beautiful and functional product that satisfies the client's needs and wants.
"Outstanding. Great to work with. Provides the direction and guidance throughout the project! Can?t go wrong with Rob"
Steve S on August 2021

Fine Point Architecture & Planning Incorporated
Fine Point Architecture & Planning Incorporated
FINE POINT Architecture & Planning, Inc. provides architectural services for for commercial and residential projects implementing 3D visualization tools to create design with finesse
"Great job getting an ADU permiti through the city. Very easy, attentive. Gave good advice, a good sounding board to throw ideas at."
Jeff R on September 2024
FINE POINT Architecture & Planning, Inc. provides architectural services for for commercial and residential projects implementing 3D visualization tools to create design with finesse
"Great job getting an ADU permiti through the city. Very easy, attentive. Gave good advice, a good sounding board to throw ideas at."
Jeff R on September 2024

Evolution Drafting
Evolution Drafting
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

Robert Nebolon Architects
Robert Nebolon Architects
Robert Nebolon Architects LLP: Crafting Exceptional Residential and Commercial Spaces. Robert Nebolon Architects (RNA) combines place-making, aesthetics, and sustainability in designing unique homes and commercial buildings. Our 30-year legacy specializes in creating family homes that echo your story and your neighborhood and city. Our meticulous planning ensures designs resonate with inhabitants while fostering community and place-making--making your place special. Choose us for award-winning design excellence, innovation, and sustainable practices, and fire-resistant residential construction, hillside construction. Let's shape your architectural journey, creating spaces that inspire, connect, and endure. RNA has offices in Berkeley and Los Angeles, California. Our design aesthetic can be best described as San Francisco Bay Area Regional design, California Coastal, and California Modern. Visit www.RNArchitect.com for our complete recent work and bibliography.
"I have been working with Robert Nebolon Architects for over 20 years. They never disappoint!!! They are my go to architects. Do not look any further."
Kristine S on July 2023
Robert Nebolon Architects LLP: Crafting Exceptional Residential and Commercial Spaces. Robert Nebolon Architects (RNA) combines place-making, aesthetics, and sustainability in designing unique homes and commercial buildings. Our 30-year legacy specializes in creating family homes that echo your story and your neighborhood and city. Our meticulous planning ensures designs resonate with inhabitants while fostering community and place-making--making your place special. Choose us for award-winning design excellence, innovation, and sustainable practices, and fire-resistant residential construction, hillside construction. Let's shape your architectural journey, creating spaces that inspire, connect, and endure. RNA has offices in Berkeley and Los Angeles, California. Our design aesthetic can be best described as San Francisco Bay Area Regional design, California Coastal, and California Modern. Visit www.RNArchitect.com for our complete recent work and bibliography.
"I have been working with Robert Nebolon Architects for over 20 years. They never disappoint!!! They are my go to architects. Do not look any further."
Kristine S on July 2023
GLB ARCHITECTS
GLB ARCHITECTS
At GLB Architects, we pride ourselves on providing creative Architectural Design in response to our client's needs. We offer a variety of residential and commercial design service, from new design and remodels to rehabs and ADA access analysis & upgrades.
"Wonderful experience."
Ted Y on November 2024
At GLB Architects, we pride ourselves on providing creative Architectural Design in response to our client's needs. We offer a variety of residential and commercial design service, from new design and remodels to rehabs and ADA access analysis & upgrades.
"Wonderful experience."
Ted Y on November 2024

Mihmic Architecture, Inc.
Mihmic Architecture, Inc.
Michael, has over 22 years of experience with Architectural design; demonstrating a broad skillset across all building types with a focus on modern & contemporary design. Michael has taught Architecture at UC Berkeley and now serves as Vice Chair of Richmond's Design Review Board. Mihmic Architecture, 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 clients. Accurate knowledge of the construction industry 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.
"It was a great experience working with Michael. We are extremely happy with his work. Michael is very kind and easy to work with. He gets the work done very fast. Pays careful attention to every minor details. Very professional and knows his work very well. I will surely refer him to my family and friends."
Jincy J on May 2020
Michael, has over 22 years of experience with Architectural design; demonstrating a broad skillset across all building types with a focus on modern & contemporary design. Michael has taught Architecture at UC Berkeley and now serves as Vice Chair of Richmond's Design Review Board. Mihmic Architecture, 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 clients. Accurate knowledge of the construction industry 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.
"It was a great experience working with Michael. We are extremely happy with his work. Michael is very kind and easy to work with. He gets the work done very fast. Pays careful attention to every minor details. Very professional and knows his work very well. I will surely refer him to my family and friends."
Jincy J on May 2020
Lake Design & Drafting
Lake Design & Drafting
We provide house plans for building permits, for residential remodeling and additions. We use 3D architectural software for full visualization and easy customization of your design ideas. We service entire San Francisco Bay area. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!
"I would highly recommend Christopher for his drafting skills.,his 3d software is especially useful for relaying the building concepts. In todays world it is rare to get a person on the phone when needed but Christopher was always there for me to answer questions and was quick to return requests. Be sure to give him all the necessary design criteria in the beginning to smooth out the design process for him which will ultimately save you money. "
James F on November 2025
We provide house plans for building permits, for residential remodeling and additions. We use 3D architectural software for full visualization and easy customization of your design ideas. We service entire San Francisco Bay area. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!
"I would highly recommend Christopher for his drafting skills.,his 3d software is especially useful for relaying the building concepts. In todays world it is rare to get a person on the phone when needed but Christopher was always there for me to answer questions and was quick to return requests. Be sure to give him all the necessary design criteria in the beginning to smooth out the design process for him which will ultimately save you money. "
James F on November 2025

Studio Ecesis
Studio Ecesis
Studio Ecesis is a small, full-service architecture firm that provides conscientious solutions to both public and private sector clients. We are passionate about architectural design and its ability to positively impact people's lives. We proudly serve our customers with pride, integrity, and attention to the details that matter most to you.
"Michael is very detail orientated, but just as important he came up with design concepts that I could have never imagined. I used him on a cabin addition and the design was fantastic. I highly recommend him for your next project."
STEVE M on August 2021
Studio Ecesis is a small, full-service architecture firm that provides conscientious solutions to both public and private sector clients. We are passionate about architectural design and its ability to positively impact people's lives. We proudly serve our customers with pride, integrity, and attention to the details that matter most to you.
"Michael is very detail orientated, but just as important he came up with design concepts that I could have never imagined. I used him on a cabin addition and the design was fantastic. I highly recommend him for your next project."
STEVE M on August 2021
FAQs for custom home building projects in Sonoma, CA
One starting point to find a local home builder is to collect suggestions from friends and neighbors. However, it’s still wise to do some more research before you hire a builder. Read reviews to supplement any word-of-mouth recommendations. Check sources like Angi that have standards and criteria in place to screen the pros it lists can also help you find more reputable local home builders.
Typically, it’s more affordable to buy an existing home than it is to build a new one. New construction loan interest rates tend to be higher than interest rates for traditional mortgages. Additionally, the cost of materials is likely higher when building a new home than it was when an existing home was built (unless it’s a very new one). You’re also paying for all new appliances, finishes, permits, inspections, and connections for water, gas, and electricity.
The average price per square foot to build a house is about $150 per square foot. Overall, the cost to build a house ranges anywhere from $100 to $500 per square foot, depending on where you build. The primary cost factors include location, size, and style of house you build.
The average cost to hire an architect for your home project ranges between $2,200 and $10,500. However, depending on location and project type, you might end up paying as little as $600 or as much as $45,000 or more. For example, the average cost of hiring an architect in North Carolina is between $1,800 and $2,000, but in California, that price tag jumps to $3,600 to $15,200.
The price you pay for your architect also depends on their experience level. For example, a principal architect, the firm's owner, typically charges $150 to $250 per hour. However, an intern architect with three to five years of experience usually only charges $45 per hour.
Knowing if you need an architect for your project can be tricky, especially if you've never worked with one before. In general, small remodeling projects like replacing fixtures typically don't require the expertise of an architect. However, larger projects, like moving walls or adding an addition to your home, should include an architect to ensure the project is structurally sound.
The Sonoma, 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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