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Verified Reviews for Home Building pros in Williamson, NY

*The Angi rating for Home Building companies in Williamson, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Home Building needs.

*The HomeAdvisor rating for Home Building companies in Williamson, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Home Building needs.

Last update on January 08, 2026

Find Home builders in Williamson

Avatar for Sentri Homes

Sentri Homes

New on AngiNew on Angi
•Approved Pro

Sentri Homes

New on AngiNew on Angi
•Approved Pro
3 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.

Avatar for Environmental Testing & Research Laboratories, Inc

Environmental Testing & Research Laboratories, Inc

4.85(
347
)

Environmental Testing & Research Laboratories, Inc

4.85(
347
)
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

Avatar for ARMSTRONG WATERPROOFING Inc

ARMSTRONG WATERPROOFING Inc

4.91(
57
)

ARMSTRONG WATERPROOFING Inc

4.91(
57
)
Customers say: Super punctual
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

Armstrong Waterproofing was incorporated in 1992. The owner, Shane Armstrong, has been in the field of waterproofing for over 30 years and has learned what works and what doesn’t. We take pride in our work and it shows in the very low number of service calls and outstanding customer referrals.

"The crew from Armstrong Waterproofing did a fantastic job of fixing our drainage problem. They were punctual and on time every day and even worked later that would be expected to get to a good stopping point each day. They were very careful not to damage any electric and water lines coming into the house during the excavation process. They excavated the ground to the footers on the outside of the basement wall, cleaned and applied waterproofing, and installed drain pipe both for a footer drain and for any downspouts. We have already noticed a big difference in our basement wall, even with the excessive rain this week. They offered sensible options for fixing our problem at a reasonable cost. We would highly recommend Armstrong Waterproofing."

Lynn P on April 2020

Armstrong Waterproofing was incorporated in 1992. The owner, Shane Armstrong, has been in the field of waterproofing for over 30 years and has learned what works and what doesn’t. We take pride in our work and it shows in the very low number of service calls and outstanding customer referrals.

"The crew from Armstrong Waterproofing did a fantastic job of fixing our drainage problem. They were punctual and on time every day and even worked later that would be expected to get to a good stopping point each day. They were very careful not to damage any electric and water lines coming into the house during the excavation process. They excavated the ground to the footers on the outside of the basement wall, cleaned and applied waterproofing, and installed drain pipe both for a footer drain and for any downspouts. We have already noticed a big difference in our basement wall, even with the excessive rain this week. They offered sensible options for fixing our problem at a reasonable cost. We would highly recommend Armstrong Waterproofing."

Lynn P on April 2020

Avatar for Napora Contracting Co., LLC

Napora Contracting Co., LLC

4.97(
58
)

Napora Contracting Co., LLC

4.97(
58
)
Customers say: Super punctual
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

NAPORA CONTRACTING CO., LCC IS A INTERIOR & EXTERIOR GENERAL CONTRACTING COMPANY OPERATING IN GREATER ROCHESTER, NY AND SURROUNDING AREAS. ALL OF THE WORK IS DONE BY OWNERS/OPERATORS AND EMPLOYEES, WE OFFER ROOFING, SIDING, WINDOWS, DOORS, INSULATION, DECKS, BATHROOMS, KITCHENS, BASEMENTS, ADDITIONS, AND MUCH MORE.....

"Professional and honest. Fair prices."

Diana R on January 2020

NAPORA CONTRACTING CO., LCC IS A INTERIOR & EXTERIOR GENERAL CONTRACTING COMPANY OPERATING IN GREATER ROCHESTER, NY AND SURROUNDING AREAS. ALL OF THE WORK IS DONE BY OWNERS/OPERATORS AND EMPLOYEES, WE OFFER ROOFING, SIDING, WINDOWS, DOORS, INSULATION, DECKS, BATHROOMS, KITCHENS, BASEMENTS, ADDITIONS, AND MUCH MORE.....

"Professional and honest. Fair prices."

Diana R on January 2020

Avatar for CNY Drywall

CNY Drywall

4.88(
107
)

CNY Drywall

4.88(
107
)
Customers say: Super punctual
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

Family owned and operated, we perform all levels of building and remodeling.

"Excellent job and great guy. Would definitely hire again and recommend to others."

edward a on July 2020

Family owned and operated, we perform all levels of building and remodeling.

"Excellent job and great guy. Would definitely hire again and recommend to others."

edward a on July 2020

Avatar for BRYCE & DOYLE

BRYCE & DOYLE

5.00(
13
)

BRYCE & DOYLE

5.00(
13
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Dealers of Irpinia, Decor, Sub-Zero,Grohe, Kohler, Wolf, BlueStar and more! Member of the National Association of the Remodeling Industry, the National Kitchen and Bath Association, and the Better Contractor's Bureau.

"I worked with Richard Doyle directly. He and his staff are super nice, professional and honest. Richard has been doing wood working and remodeling for over 30 years and has a excellent reputation. I gave a "B" on price only because he sells and does quality work. So it is a bit pricey but you get what you pay for! So no - it's really a "A" but it is high end quality. I had this idea for a dream kitchen and he made it come true. I wanted "Zebra wood" frameless cabinets and he was the only reseller for the company that I thought could deliver the product that I wanted. Turned out the cabinet website pictures were not really what they sold as far as finishes. We spent months finding all the right manufactures to make the cabinets and do the veneers. He loved the challenge and really never charged me for the time he put in to get it right and it was right! These are not Ikea flimsy frameless cabinets. Mine have dovetail joints and solid wood with soft close hardware. 1963 kitchen and bath to 2030 modern. Love it."

John A on March 2018

Dealers of Irpinia, Decor, Sub-Zero,Grohe, Kohler, Wolf, BlueStar and more! Member of the National Association of the Remodeling Industry, the National Kitchen and Bath Association, and the Better Contractor's Bureau.

"I worked with Richard Doyle directly. He and his staff are super nice, professional and honest. Richard has been doing wood working and remodeling for over 30 years and has a excellent reputation. I gave a "B" on price only because he sells and does quality work. So it is a bit pricey but you get what you pay for! So no - it's really a "A" but it is high end quality. I had this idea for a dream kitchen and he made it come true. I wanted "Zebra wood" frameless cabinets and he was the only reseller for the company that I thought could deliver the product that I wanted. Turned out the cabinet website pictures were not really what they sold as far as finishes. We spent months finding all the right manufactures to make the cabinets and do the veneers. He loved the challenge and really never charged me for the time he put in to get it right and it was right! These are not Ikea flimsy frameless cabinets. Mine have dovetail joints and solid wood with soft close hardware. 1963 kitchen and bath to 2030 modern. Love it."

John A on March 2018

ANF contracting

4.83(
24
)

ANF contracting

4.83(
24
)
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

I am a small growing business. I estimate each job personally. I hire labor depending on the size of the project plus I have very dependable subs. I take a down payment to start and a payment halfway through and then a final payment when project is complete.

"Seamus was recommended to us by our painter and we were blown away by the craftsmanship and care he took for our new home. He does high end looking work for reasonable pricing. Get on the schedule--you need to choose this contractor. We will be having him back to do some more custom work!"

john f on October 2019

I am a small growing business. I estimate each job personally. I hire labor depending on the size of the project plus I have very dependable subs. I take a down payment to start and a payment halfway through and then a final payment when project is complete.

"Seamus was recommended to us by our painter and we were blown away by the craftsmanship and care he took for our new home. He does high end looking work for reasonable pricing. Get on the schedule--you need to choose this contractor. We will be having him back to do some more custom work!"

john f on October 2019

William Mcmahon General Contractor

4.96(
23
)

William Mcmahon General Contractor

4.96(
23
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

General Contractor in business for 31 years. Member in good standing with the Better Contractors Bureau and Rochester Home Builders. Member of National Trust for Historic Preservation.

General Contractor in business for 31 years. Member in good standing with the Better Contractors Bureau and Rochester Home Builders. Member of National Trust for Historic Preservation.

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Home Building questions, answered by experts

Yes, you can finance new construction using a construction loan or a construction-to-permanent loan, or you can use a home equity line of credit or a cash-out refinance if you’re building a second home. Some mortgagors may have restrictions on DIY house builds, so be sure to check that you can get financing before starting your project.

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

Most cottages are around 1,000 square feet, making them smaller than most other styles. However, cottages are defined more by their decor and architectural focus on simplicity, functionality, and a connection to nature than they are by a rigid square footage or floor plan. While cottages are defined more by their charm and appearance than size, the smaller footprint does help maximize the comfort and charm, and it keeps the focus on connection to nature and family.

Home additions can add significant value to a home by increasing its overall square footage and enhancing a home's functionality and appeal. Key additions such as extra bedrooms, bathrooms, or larger kitchens offer the highest returns on investment. Well-planned additions that seamlessly integrate with the existing structure and match the neighborhood's style can boost curb appeal and market value. However, the actual increase in value depends on the quality of the work, the types of additions, and the current real estate market conditions.

The national average cost of a building permit is about $1,600, but this number includes extensive renovations. Homeowners typically spend between $150 and $2,000 in general on one or multiple permits for their project. Conversely, permits for simple projects, such as minor electrical renovations, could cost as little as $10.

The Williamson, NY homeowners’ guide to home building services

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

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