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Verified Reviews for Custom Home Building pros in Ayer, MA
*The Angi rating for Custom Home Building companies in Ayer, MA 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 Ayer, MA 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 January 10, 2026
Find Custom home builders in Ayer

iCornerstone, Inc.
iCornerstone, Inc.
iCornerstone offers design through construction services and promotes Consumer Controlled Construction as a solution to over-pricing, under performance, unrealistic allowances, and quality issues. We provide designs, labor and material specifications, accurate project costs, camera monitoring, invoice review, project accounting, and construction support that allow the homeowner to act as the general contractor easily and with a minimal time commitment. The first three carry an hourly rate of $100, while the fourth is 15% of the cost of the work as you have defined it. After a free Initial Consultation, we provide a proposal for the cost of our services. Our platform networks regulators, engineers, subcontractors, service providers, and suppliers involved in your project so that everyone knows what everyone else knows, which is the hallmark of transparency and accountability. Everyone is on the same page. Their E-folios resolve the dilemma of "If only I had known, I would have asked." Everyone benefits, and nothing like the platform exists in the industry. Clients must provide us the names of subcontractors we do not know as a means of proving to themselves we do not steer business or have a conflict of interest. This strategy helps our network grow and ensures fairness. Our free, online, Consumer E-Folio / Project Organizer / Property Profile / Research Tool will help you, even if you do not involve us in your project, comes with no strings attached, and respects your privacy. Simply register at icornerstoneinc.com and have fun using it. We claim three remarkable achievements: no client has ever gone over budget; no subcontractor has ever been overpaid or unpaid without cause; and all clients receive the highest quality at the lowest price.
"For our home addition/renovation we are very grateful to have found Richard Connolly and his site iCornerstone. Our vision was a Two-story + basement + livable attic space home addition which would provide significant practical square footage to our existing house and integrate seamlessly with it. We interviewed a number of general contractors but we were overall a bit uncomfortable after the interviews due to gaps in transparency regarding how costs were calculated and how timelines were established, resulting in some lack of confidence. We happened upon Richard’s iCornerstone site via Angies. Richard provided an extremely transparent and detailed description of his unique and practical process, which delivered a set of superb designs along with a truly logical, transparent, and honest listing of costs, both materials and labor, at all stages, and how those costs were derived. Richard also delivered transparency on timelines, and he provided recommendations for all the needed tradespeople that he had historically a close working relationship with; alternatively we could have selected tradespeople of our own choosing. Richard and his process gave us the utmost confidence for proceeding. We proceeded with our renovation under Richard’s guidance and his own crew and the entire process went according to plan with excellent communication, rapport, and confidence at all stages from excavation to final finish work. Transparency, confidence-building, dependability, highly knowledgeable, customer-friendly, and results-oriented are all terms we would use to describe Richard and the iCornerstone process. We strongly recommend Richard for anyone contemplating any home renovation or home addition, large or small."
greg b on December 2025
iCornerstone offers design through construction services and promotes Consumer Controlled Construction as a solution to over-pricing, under performance, unrealistic allowances, and quality issues. We provide designs, labor and material specifications, accurate project costs, camera monitoring, invoice review, project accounting, and construction support that allow the homeowner to act as the general contractor easily and with a minimal time commitment. The first three carry an hourly rate of $100, while the fourth is 15% of the cost of the work as you have defined it. After a free Initial Consultation, we provide a proposal for the cost of our services. Our platform networks regulators, engineers, subcontractors, service providers, and suppliers involved in your project so that everyone knows what everyone else knows, which is the hallmark of transparency and accountability. Everyone is on the same page. Their E-folios resolve the dilemma of "If only I had known, I would have asked." Everyone benefits, and nothing like the platform exists in the industry. Clients must provide us the names of subcontractors we do not know as a means of proving to themselves we do not steer business or have a conflict of interest. This strategy helps our network grow and ensures fairness. Our free, online, Consumer E-Folio / Project Organizer / Property Profile / Research Tool will help you, even if you do not involve us in your project, comes with no strings attached, and respects your privacy. Simply register at icornerstoneinc.com and have fun using it. We claim three remarkable achievements: no client has ever gone over budget; no subcontractor has ever been overpaid or unpaid without cause; and all clients receive the highest quality at the lowest price.
"For our home addition/renovation we are very grateful to have found Richard Connolly and his site iCornerstone. Our vision was a Two-story + basement + livable attic space home addition which would provide significant practical square footage to our existing house and integrate seamlessly with it. We interviewed a number of general contractors but we were overall a bit uncomfortable after the interviews due to gaps in transparency regarding how costs were calculated and how timelines were established, resulting in some lack of confidence. We happened upon Richard’s iCornerstone site via Angies. Richard provided an extremely transparent and detailed description of his unique and practical process, which delivered a set of superb designs along with a truly logical, transparent, and honest listing of costs, both materials and labor, at all stages, and how those costs were derived. Richard also delivered transparency on timelines, and he provided recommendations for all the needed tradespeople that he had historically a close working relationship with; alternatively we could have selected tradespeople of our own choosing. Richard and his process gave us the utmost confidence for proceeding. We proceeded with our renovation under Richard’s guidance and his own crew and the entire process went according to plan with excellent communication, rapport, and confidence at all stages from excavation to final finish work. Transparency, confidence-building, dependability, highly knowledgeable, customer-friendly, and results-oriented are all terms we would use to describe Richard and the iCornerstone process. We strongly recommend Richard for anyone contemplating any home renovation or home addition, large or small."
greg b on December 2025

MMP Construction Inc
MMP Construction Inc
At MMP Construction we pride ourselves on delivering great craftsmanship, and providing the best customer experience at competitive prices. From complete remodeling and additions, to snow removal and minor roof repairs we also specialize in 203k and home style loans, MMP Construction will complete the job in a timely and professional manner. We understand the investments our customers are making and we proactively provide updated timelines and information regarding the job, from start to finish.
"We needed a skylight installed in our bathroom, and MMP did an excellent job--we are very happy with it! The team was friendly and worked quickly and efficiently to get it done before it got dark, and the quality of their work was excellent. Matt was very friendly and nice to communicate with as well, and always responded right away. I highly recommend MMP Construction to anyone looking for great quality work and excellent customer service."
Nathan S on November 2022
At MMP Construction we pride ourselves on delivering great craftsmanship, and providing the best customer experience at competitive prices. From complete remodeling and additions, to snow removal and minor roof repairs we also specialize in 203k and home style loans, MMP Construction will complete the job in a timely and professional manner. We understand the investments our customers are making and we proactively provide updated timelines and information regarding the job, from start to finish.
"We needed a skylight installed in our bathroom, and MMP did an excellent job--we are very happy with it! The team was friendly and worked quickly and efficiently to get it done before it got dark, and the quality of their work was excellent. Matt was very friendly and nice to communicate with as well, and always responded right away. I highly recommend MMP Construction to anyone looking for great quality work and excellent customer service."
Nathan S on November 2022
Ken Diranian AIA, LEED Architecture
Ken Diranian AIA, LEED Architecture
Residential planning and design services
"I chose to work with Ken to be the architect on a new construction residential home, I am looking to build. Thus far, I could not be happier with my decision. I cannot say enough, not only about his work ethic, but his passion for what he does. The guidance and ease of communication cannot be understated."
Anthony V on March 2025
Residential planning and design services
"I chose to work with Ken to be the architect on a new construction residential home, I am looking to build. Thus far, I could not be happier with my decision. I cannot say enough, not only about his work ethic, but his passion for what he does. The guidance and ease of communication cannot be understated."
Anthony V on March 2025

WS Builders Corp
WS Builders Corp
At WS Builders, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job. Call us today!
"The job was done very efficiently. Communication was effective. His company built a den, laundry and half bath, den and remodeled the kitchen and living room."
Grace F on February 2025
At WS Builders, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job. Call us today!
"The job was done very efficiently. Communication was effective. His company built a den, laundry and half bath, den and remodeled the kitchen and living room."
Grace F on February 2025

Titan Builders
Titan Builders
Titan Builders is a full service contracting company specializing in new construction homes, additions, decks, and more. Our mission is to provide our customers with high-quality roofing, gutters, and siding installations at the most competitive prices. We look forward to working with your on your next project. Please call or text us at (508)723-3140
"Tom and his crew did a great job. The work was completed in a timely manner. The final result was a really solid and good looking porch. I have other projects for Titan Builders, which I have elected to hire for those projects as well."
Richard R on September 2025
Titan Builders is a full service contracting company specializing in new construction homes, additions, decks, and more. Our mission is to provide our customers with high-quality roofing, gutters, and siding installations at the most competitive prices. We look forward to working with your on your next project. Please call or text us at (508)723-3140
"Tom and his crew did a great job. The work was completed in a timely manner. The final result was a really solid and good looking porch. I have other projects for Titan Builders, which I have elected to hire for those projects as well."
Richard R on September 2025

Szymanski Architect LLC
Szymanski Architect LLC
We pride ourselves on our professionalism, as well as our ability to complete every job to the homeowner's total satisfaction. We never leave a job unfinished, or a homeowner not 100% satisfied with our level of service - Call today!
"We had an exceptional experience working with Michal on our house extension project. From the very beginning, he demonstrated an outstanding ability to translate our vision into a functional, beautiful design that seamlessly blends with the existing structure. His attention to detail, creativity, and deep understanding of both aesthetics and practicality made the entire process smooth and enjoyable. What truly stood out was his communication and responsiveness—he was always available to answer questions, provide updates, and offer thoughtful suggestions that improved the overall outcome. He collaborated effectively with our sub-contractors, engineer and interior designer and ensured that every stage of the project stayed on track, on budget, and in line with local regulations. The final result has exceeded our expectations. The new space feels light-filled, spacious, and perfectly suited to our family's needs. We receive compliments on it from many people! I wouldn't hesitate to rec"
Szymon F on June 2025
We pride ourselves on our professionalism, as well as our ability to complete every job to the homeowner's total satisfaction. We never leave a job unfinished, or a homeowner not 100% satisfied with our level of service - Call today!
"We had an exceptional experience working with Michal on our house extension project. From the very beginning, he demonstrated an outstanding ability to translate our vision into a functional, beautiful design that seamlessly blends with the existing structure. His attention to detail, creativity, and deep understanding of both aesthetics and practicality made the entire process smooth and enjoyable. What truly stood out was his communication and responsiveness—he was always available to answer questions, provide updates, and offer thoughtful suggestions that improved the overall outcome. He collaborated effectively with our sub-contractors, engineer and interior designer and ensured that every stage of the project stayed on track, on budget, and in line with local regulations. The final result has exceeded our expectations. The new space feels light-filled, spacious, and perfectly suited to our family's needs. We receive compliments on it from many people! I wouldn't hesitate to rec"
Szymon F on June 2025

Nederhoff Architecture
Nederhoff Architecture
Nederhoff Architecture collaborates with commercial and residential clients to design and implement optimal solutions. We offer thorough and complete architectural services for a competitive and reasonable fee, based on actual time spent on each project. Since graduating from Harvard in 1984 with his Master in Architecture degree, firm leader Brad Nederhoff has been offering his architectural services for referral clients. Brad excels in listening, analyzing, brainstorming, and ultimately generating creative yet practical solutions that are carefully communicated with contractors. His thorough and professional process always leads to owner satisfaction with the ultimate outcome.
"This particular project was to add liveable space to our house. Brad understood our vision and the daunting constraints of our project (due to the age of the house), and offered several creative options that would meet our functional needs while being visually appealing. We particularly appreciated his skill at thinking outside the box to address our projectâ s constraints. We were able to choose a design not only that would work but that we loved."
Eben R on February 2024
Nederhoff Architecture collaborates with commercial and residential clients to design and implement optimal solutions. We offer thorough and complete architectural services for a competitive and reasonable fee, based on actual time spent on each project. Since graduating from Harvard in 1984 with his Master in Architecture degree, firm leader Brad Nederhoff has been offering his architectural services for referral clients. Brad excels in listening, analyzing, brainstorming, and ultimately generating creative yet practical solutions that are carefully communicated with contractors. His thorough and professional process always leads to owner satisfaction with the ultimate outcome.
"This particular project was to add liveable space to our house. Brad understood our vision and the daunting constraints of our project (due to the age of the house), and offered several creative options that would meet our functional needs while being visually appealing. We particularly appreciated his skill at thinking outside the box to address our projectâ s constraints. We were able to choose a design not only that would work but that we loved."
Eben R on February 2024
JFA Design Group
JFA Design Group
JFA Design Group brings an unmatched commitment to excellence to your architectural project. We have over 20 years experience delivering unsurpassed professionalism, expertise and value. We take pride in providing our customers with personalized customer service, the highest industry standards and top quality workmanship.
"I found Johnâ s service through a contractor that I didnâ t end up working with. But working with John was a nice experience. I have plans to do some reno work on my townhouse kitchen, and an important part of the job is to widen the entrance between the kitchen and the dining room. Because itâ s a townhouse structure and the management donâ t know where the original blueprint is, and they require an architectural evaluation and drawing for opening the walls. I had to hire a structural engineer/architect to do the job. John came to my house several times. He did not open the wall to probe. He looked at the structures from the basement to the kitchen and did his engineer calculation and gave me the architectural drawings according to how big I wanted to widen the entrance. I donâ t know anything about architect, but his drawing was sent to the City Hall for permit. I did change my thoughts on the all opening a couple of times, and he always responded promptly and kindly, and made changes accordingly. I had expected a much higher price from contractors for hiring an architect, but John was very reasonable, and said for a small adjustment, it wouldnâ t cost so much. I thought everything went well in our communication and the final product and the value of the work. One thing though, when the city building inspector came, he said where we wanted the wall to end was not sitting on a basement column, and that piece of end wall has to be on a column. So this means I had to put back 6 inches of the wall I had originally cut. I was a little bummed about that. I canâ t say if this is something the architect shouldâ ve known (or maybe building code is slightly different every city?), but I wish I could be better prepared or informed about this particular building code. Overall, I thought it was a good experience and I would recommend JFA Design Group."
April C on May 2024
JFA Design Group brings an unmatched commitment to excellence to your architectural project. We have over 20 years experience delivering unsurpassed professionalism, expertise and value. We take pride in providing our customers with personalized customer service, the highest industry standards and top quality workmanship.
"I found Johnâ s service through a contractor that I didnâ t end up working with. But working with John was a nice experience. I have plans to do some reno work on my townhouse kitchen, and an important part of the job is to widen the entrance between the kitchen and the dining room. Because itâ s a townhouse structure and the management donâ t know where the original blueprint is, and they require an architectural evaluation and drawing for opening the walls. I had to hire a structural engineer/architect to do the job. John came to my house several times. He did not open the wall to probe. He looked at the structures from the basement to the kitchen and did his engineer calculation and gave me the architectural drawings according to how big I wanted to widen the entrance. I donâ t know anything about architect, but his drawing was sent to the City Hall for permit. I did change my thoughts on the all opening a couple of times, and he always responded promptly and kindly, and made changes accordingly. I had expected a much higher price from contractors for hiring an architect, but John was very reasonable, and said for a small adjustment, it wouldnâ t cost so much. I thought everything went well in our communication and the final product and the value of the work. One thing though, when the city building inspector came, he said where we wanted the wall to end was not sitting on a basement column, and that piece of end wall has to be on a column. So this means I had to put back 6 inches of the wall I had originally cut. I was a little bummed about that. I canâ t say if this is something the architect shouldâ ve known (or maybe building code is slightly different every city?), but I wish I could be better prepared or informed about this particular building code. Overall, I thought it was a good experience and I would recommend JFA Design Group."
April C on May 2024

TCI Construction, inc
TCI Construction, inc
Trusted Home Remodeling & Custom Building in Central Massachusetts & MetroWest Boston for over 30+ Years. At TCI Builders, we turn houses into dream homes. With 30+ years of experience in residential construction, home remodeling, kitchen and bathroom renovations, and custom home building, our team delivers exceptional craftsmanship and unmatched customer service. We proudly serve Central Massachusetts and MetroWest Boston, offering homeowners trusted renovation solutions backed by quality workmanship, clear communication, and a stress-free building experience from start to finish. Whether you’re planning a whole-home renovation, kitchen or bathroom remodel, room addition, basement finish, or custom-built home, TCI Builders brings your vision to life with precision, reliability, and care. Let’s build the home of your dreams—together.
Trusted Home Remodeling & Custom Building in Central Massachusetts & MetroWest Boston for over 30+ Years. At TCI Builders, we turn houses into dream homes. With 30+ years of experience in residential construction, home remodeling, kitchen and bathroom renovations, and custom home building, our team delivers exceptional craftsmanship and unmatched customer service. We proudly serve Central Massachusetts and MetroWest Boston, offering homeowners trusted renovation solutions backed by quality workmanship, clear communication, and a stress-free building experience from start to finish. Whether you’re planning a whole-home renovation, kitchen or bathroom remodel, room addition, basement finish, or custom-built home, TCI Builders brings your vision to life with precision, reliability, and care. Let’s build the home of your dreams—together.

LMC Drafting/Design
LMC Drafting/Design
We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. We at LMC Drafting/Design strive to maintain our reputation as a high quality, very service oriented company with our main focus being customer satisfaction.
"Customer service was optimal and thorough. All of my questions were answered In A clear and easy to understand way. Friendly and had a good understanding of my needs. Great job! "
Alberto S on February 2025
We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. We at LMC Drafting/Design strive to maintain our reputation as a high quality, very service oriented company with our main focus being customer satisfaction.
"Customer service was optimal and thorough. All of my questions were answered In A clear and easy to understand way. Friendly and had a good understanding of my needs. Great job! "
Alberto S on February 2025
The Ayer, MA 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.

While it isn't easy to expand your property, you can consider building up. The cost of adding a second story has quite the range. We'll break it down here.

Building a home and looking to go as green as possible? Learn about the cost to build a green home and how energy-efficient features will affect the total.

How much does a container home cost? It depends on the number of containers you use. This guide will help map out potential expenses for your project.
•Discover the cost to build a fourplex. Learn about average prices, key cost factors, and ways to save when planning your fourplex construction project.
•Discover monolithic dome house costs, including average prices, cost factors, and tips to help you budget for your unique, energy-efficient home project.
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