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Verified Reviews for Treehouse Building pros in Williamstown, NY
*The Angi rating for Treehouse Building companies in Williamstown, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Treehouse Building needs.
*The HomeAdvisor rating for Treehouse Building companies in Williamstown, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Treehouse Building needs.
Last update on December 17, 2025
Find Treehouse builders in Williamstown

GPG Construction
GPG Construction
Welcome to GPG Construction! With 30 years of experience 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!"
Yvonne R on May 2024
Welcome to GPG Construction! With 30 years of experience 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!"
Yvonne R on May 2024

J&J's Construction & Remodeling
J&J's Construction & Remodeling
I am well versed in all your construction needs. I have done commercial construction for ten years and specialize in framing, drywall, hanging, finishing, cabinets, plumbing, electrical, trim, flooring and all your remodeling projects. I take great pride in my work and I look forward to transforming your house into your dream home.
"Project was completed in a very professional and extremely competent manner on a timely basis with an eye toward detail. I would highly recommend J&J ‘s Remodeling to anyone needing to hire a professional for any remodeling and/or construction project."
CJ D on October 2025
I am well versed in all your construction needs. I have done commercial construction for ten years and specialize in framing, drywall, hanging, finishing, cabinets, plumbing, electrical, trim, flooring and all your remodeling projects. I take great pride in my work and I look forward to transforming your house into your dream home.
"Project was completed in a very professional and extremely competent manner on a timely basis with an eye toward detail. I would highly recommend J&J ‘s Remodeling to anyone needing to hire a professional for any remodeling and/or construction project."
CJ D on October 2025

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.
"I had an addition I wanted for our home. We were required to have a survey and an engineer drawing to apply for the permit. I had a list of 10-15 local engineering companies given to me by the permitting office. Very few would return my call. several the rest said they only do commercial or that this was too small of a job and would cost more. It was taking months and I was frustrated and decided to try Angie’s. I am so pleased. I had a response that very day I inquired for the job. It was clear what was needed from me. Great communication and answered questions to help me get them what they needed. The project from start to finish was drafted within 3 weeks. It could have been done sooner but I was traveling and not able to check emails. Once I told them to text me to alert me of an email they did that. I would highly recommend them."
Vickie G on December 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.
"I had an addition I wanted for our home. We were required to have a survey and an engineer drawing to apply for the permit. I had a list of 10-15 local engineering companies given to me by the permitting office. Very few would return my call. several the rest said they only do commercial or that this was too small of a job and would cost more. It was taking months and I was frustrated and decided to try Angie’s. I am so pleased. I had a response that very day I inquired for the job. It was clear what was needed from me. Great communication and answered questions to help me get them what they needed. The project from start to finish was drafted within 3 weeks. It could have been done sooner but I was traveling and not able to check emails. Once I told them to text me to alert me of an email they did that. I would highly recommend them."
Vickie G on December 2025
Five star
Five star
Five star finsh llc
Five star finsh llc

Sentri Homes
Sentri Homes
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.

Auto Transport - United Freight Of America
Auto Transport - United Freight Of America
United Freight of America is your all inclusive transport solution. CONTACT US FOR A QUOTE. please include pick up and Drop off locations and vehicle information
"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."
CLAUDIA H on October 2021
United Freight of America is your all inclusive transport solution. CONTACT US FOR A QUOTE. please include pick up and Drop off locations and vehicle information
"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."
CLAUDIA H on October 2021

Environmental Testing & Research Laboratories, Inc
Environmental Testing & Research Laboratories, Inc
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

New York Sash
New York Sash
New York Sash consistently provides homeowners with products that not only improve the appearance and value of their home, but saves them energy usage (and energy dollars) as well! Not only do we provide and install these products, we also stand behind them with a full service department to honor all warranty and guarantee promises made. This gives our customers complete peace of mind. Additionally, all of our installers are certified by the Occupational Safety and health Administration (OSHA) and certified in Lead Safety through the Environmental Protection Agency. New York Sash is fully insured. We are safe on the job and with your home.We also have a state-of-the-art Idea & Design Center with many product options on display, to allow homeowners to look and feel what the products would be like installed in their home.
"Brian, Bryan and Matt were our crew and were excellent. They were efficient, friendly and kind to me and my kids who liked to watch them work. The windows they completed look perfect. There was one window that they had to reschedule due to the space being very un-level. They ordered a brand new window and scheduled a new date to complete the job for the last window. They called as they were finishing up to explain everything. I also appreciated that I didn't have to be present for them to complete the job so that I was able to go to work."
Mallory C on May 2022
New York Sash consistently provides homeowners with products that not only improve the appearance and value of their home, but saves them energy usage (and energy dollars) as well! Not only do we provide and install these products, we also stand behind them with a full service department to honor all warranty and guarantee promises made. This gives our customers complete peace of mind. Additionally, all of our installers are certified by the Occupational Safety and health Administration (OSHA) and certified in Lead Safety through the Environmental Protection Agency. New York Sash is fully insured. We are safe on the job and with your home.We also have a state-of-the-art Idea & Design Center with many product options on display, to allow homeowners to look and feel what the products would be like installed in their home.
"Brian, Bryan and Matt were our crew and were excellent. They were efficient, friendly and kind to me and my kids who liked to watch them work. The windows they completed look perfect. There was one window that they had to reschedule due to the space being very un-level. They ordered a brand new window and scheduled a new date to complete the job for the last window. They called as they were finishing up to explain everything. I also appreciated that I didn't have to be present for them to complete the job so that I was able to go to work."
Mallory C on May 2022

CNY Drywall
CNY Drywall
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

Overkill Contracting
Overkill Contracting
We specialize in remodeling, handyman services, home repairs, home improvements, and more. We pride ourselves on the quality work we provide, while delivering great customer service. Check out all the services we offer below and call -or- click to schedule a free estimate today!
"Eric was extremely responsive. When we did the initial walk through, he was able to guide me with sensible suggestions that fit my needs and budget. He managed a project for the remodel of my 1930's home. In spite of me living out of state, he kept me informed through the entire process with pictures and updates. In addition, he was proactive when issues came up. He finished on time and within the budget. I would highly recommend him and his crew for any type of remodel small and large."
Rosalia W on April 2024
We specialize in remodeling, handyman services, home repairs, home improvements, and more. We pride ourselves on the quality work we provide, while delivering great customer service. Check out all the services we offer below and call -or- click to schedule a free estimate today!
"Eric was extremely responsive. When we did the initial walk through, he was able to guide me with sensible suggestions that fit my needs and budget. He managed a project for the remodel of my 1930's home. In spite of me living out of state, he kept me informed through the entire process with pictures and updates. In addition, he was proactive when issues came up. He finished on time and within the budget. I would highly recommend him and his crew for any type of remodel small and large."
Rosalia W on April 2024
The Williamstown, NY homeowners’ guide to treehouse building services
From average costs to expert advice, get all the answers you need to get your job done.

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•Discover the cost of converting a duplex to a single-family home. Learn average prices, key factors, and tips to plan your conversion project with confidence.

Fire-rated doors can help protect your home from a fire in the garage. Before you buy, read this guide to understand fire-rated doors and where to install them.

Detailed house plans are an important part of construction projects. Learn when you need an architect to draw plans for a project.
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