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Verified Reviews for Treehouse Building pros in Washington, NJ
*The Angi rating for Treehouse Building companies in Washington, NJ 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 Washington, NJ 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
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Joseph Primiano Architect
Joseph Primiano Architect
Architectural firm dealing with all types and sizes of residential and commercial projects. Design services, color three dimensional renderings, construction drawings, board approvals, and more.
"Beyond better than I could have hoped. Joe is very professional, well versed, knowledgeable, creative & resourceful and an excellent communicator. He spoke to us not at us and throughout the entire design process he listened and asked questions & listened some more. We found him very easy to work with and honest. Joe worked within our needs. He took what was in our head put in onto paper and together with our contractor gave us what was in our hearts - a beautiful home. Go with Joe - he’s the man in the know!"
Patricia D on August 2020
Architectural firm dealing with all types and sizes of residential and commercial projects. Design services, color three dimensional renderings, construction drawings, board approvals, and more.
"Beyond better than I could have hoped. Joe is very professional, well versed, knowledgeable, creative & resourceful and an excellent communicator. He spoke to us not at us and throughout the entire design process he listened and asked questions & listened some more. We found him very easy to work with and honest. Joe worked within our needs. He took what was in our head put in onto paper and together with our contractor gave us what was in our hearts - a beautiful home. Go with Joe - he’s the man in the know!"
Patricia D on August 2020

N.S. Home Remodeling/Handyman
N.S. Home Remodeling/Handyman
We offer a small local based company in the Lehigh Valley area, and affordable prices to suit customers needs. Our professional services focuses on guiding the customers through the entire project and completing it in a timely fashion.
"He was great. Go straight to the job and helped with another project. Great person and handyman"
Lamar T on October 2025
We offer a small local based company in the Lehigh Valley area, and affordable prices to suit customers needs. Our professional services focuses on guiding the customers through the entire project and completing it in a timely fashion.
"He was great. Go straight to the job and helped with another project. Great person and handyman"
Lamar T on October 2025

Connection 1 2 3 Services
Connection 1 2 3 Services
Connection 1 2 3 Services is a trusted handyman business offering a wide range of services to meet both indoor and outdoor needs. With over 30 years of combined experience, this family-owned and operated company, led by Sheldon Oliver, is dedicated to delivering quality craftsmanship and reliable service to the Center Valley area. Whether you need assistance with minor repairs or more extensive projects, Connection 1 2 3 Services is equipped to handle it all. For indoor services, they provide drywall repair and installation, painting and touch-ups, light fixture and ceiling fan installation, plumbing repairs and faucet replacements, cabinet installation and repair, flooring installation and repair, window and door repair or replacement, and general home maintenance and repairs. For outdoor projects, they offer deck repair and staining, fence installation and repair, gutter cleaning and repair, pressure washing, landscaping and yard cleanup, outdoor lighting installation, small concrete repairs, and exterior painting. No job is too small or too big for Connection 1 2 3 Services. They pride themselves on their attention to detail, timely service, and customer satisfaction. For dependable handyman services that you can trust, reach out to them at 929-252-0276.
"They were nice, professional, and quick and did the jobs well. Easy to work with and quick to respond - would definitely recommend."
Jessica W on July 2025
Connection 1 2 3 Services is a trusted handyman business offering a wide range of services to meet both indoor and outdoor needs. With over 30 years of combined experience, this family-owned and operated company, led by Sheldon Oliver, is dedicated to delivering quality craftsmanship and reliable service to the Center Valley area. Whether you need assistance with minor repairs or more extensive projects, Connection 1 2 3 Services is equipped to handle it all. For indoor services, they provide drywall repair and installation, painting and touch-ups, light fixture and ceiling fan installation, plumbing repairs and faucet replacements, cabinet installation and repair, flooring installation and repair, window and door repair or replacement, and general home maintenance and repairs. For outdoor projects, they offer deck repair and staining, fence installation and repair, gutter cleaning and repair, pressure washing, landscaping and yard cleanup, outdoor lighting installation, small concrete repairs, and exterior painting. No job is too small or too big for Connection 1 2 3 Services. They pride themselves on their attention to detail, timely service, and customer satisfaction. For dependable handyman services that you can trust, reach out to them at 929-252-0276.
"They were nice, professional, and quick and did the jobs well. Easy to work with and quick to respond - would definitely recommend."
Jessica W on July 2025
David B. Singer, AIA, Architect
David B. Singer, AIA, Architect
I have been a licensed architect since 1988, practicing in New Jersey and Pennsylvania. In 2005, I launched my own firm with emphasis on single family and multi-family residential design, commercial building design and fit-out and institutional design for public entities with a focus on administrative and justice projects. I have a wide and deep range of experience with residential, commercial and institutional clients. I work well with clients, developers, builders and construction managers. I understand the process and value of the primary project delivery methods including design-bid-build and design-build. Stylistically, my philosophy is to fit in with the local style, while maintaining integrity and fluidity of design. Architectural heroes: Frank Lloyd Wright, Louis Kahn, Frank Furness, Henry Hobson Richardson.
"David was professional, gave excellent recommendations and was a true pleasure to work with. Really willing to work with us on getting our project finalized and approved and was easy to reach with any questions or changes. Defintely recommend!"
Danielle B on January 2022
I have been a licensed architect since 1988, practicing in New Jersey and Pennsylvania. In 2005, I launched my own firm with emphasis on single family and multi-family residential design, commercial building design and fit-out and institutional design for public entities with a focus on administrative and justice projects. I have a wide and deep range of experience with residential, commercial and institutional clients. I work well with clients, developers, builders and construction managers. I understand the process and value of the primary project delivery methods including design-bid-build and design-build. Stylistically, my philosophy is to fit in with the local style, while maintaining integrity and fluidity of design. Architectural heroes: Frank Lloyd Wright, Louis Kahn, Frank Furness, Henry Hobson Richardson.
"David was professional, gave excellent recommendations and was a true pleasure to work with. Really willing to work with us on getting our project finalized and approved and was easy to reach with any questions or changes. Defintely recommend!"
Danielle B on January 2022

Innozign Contracting, LLC
Innozign Contracting, LLC
Innozign (In-no-zign) Contracting, LLC has been doing business for our clients in New Jersey since 2006. We are a licensed and insured design construction company specializing in remodeling, major renovations, additions and new construction in both residential and commercial applications. While delivering personalized service and making the experience seamless, we take our commitments very seriously in making sure everything to the smallest detail is done right.
"Exceptional Work and Professionalism Justin from Innozign Contracting did an outstanding job building a bathroom in my mother’s home. He is professional, detail-oriented, and committed to high-quality work. From the start, he listened carefully, created a solid schedule, and stuck to it while ensuring everything was done to perfection. His kindness, patience, and adaptability shined through as he worked with my mom to complete the job, making the process smooth and stress-free. The finished bathroom looks fantastic, and I highly recommend Innozign Contracting to anyone looking for a skilled and reliable contractor! "
Eric M on February 2025
Innozign (In-no-zign) Contracting, LLC has been doing business for our clients in New Jersey since 2006. We are a licensed and insured design construction company specializing in remodeling, major renovations, additions and new construction in both residential and commercial applications. While delivering personalized service and making the experience seamless, we take our commitments very seriously in making sure everything to the smallest detail is done right.
"Exceptional Work and Professionalism Justin from Innozign Contracting did an outstanding job building a bathroom in my mother’s home. He is professional, detail-oriented, and committed to high-quality work. From the start, he listened carefully, created a solid schedule, and stuck to it while ensuring everything was done to perfection. His kindness, patience, and adaptability shined through as he worked with my mom to complete the job, making the process smooth and stress-free. The finished bathroom looks fantastic, and I highly recommend Innozign Contracting to anyone looking for a skilled and reliable contractor! "
Eric M on February 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
Eric C. Trepkau Architect, Inc.
Eric C. Trepkau Architect, Inc.
Eric C.Trepkau Architect Inc., Is a full service residential design firm specializing in additions and renovations to existing homes also provides new custom home design.
"Eric is busy, then again all good people are. Sometimes it might take a bit for him to get back to you, but its worth the wait. Eric is easy to work with, friendly and professional. The value for money is excellent."
Daniel D on August 2020
Eric C.Trepkau Architect Inc., Is a full service residential design firm specializing in additions and renovations to existing homes also provides new custom home design.
"Eric is busy, then again all good people are. Sometimes it might take a bit for him to get back to you, but its worth the wait. Eric is easy to work with, friendly and professional. The value for money is excellent."
Daniel D on August 2020

Modern Home Improvements, Corp.
Modern Home Improvements, Corp.
At Modern Home Improvements Corp, we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. Modern Home Improvements Corp looks forward to earning your business! Estimates are free. If a consultation is provided there will be a fee based on the amount of time spent with the client at the property. A Fee will be collected by the representative of The Company at the end of the conciliation. Please note if any fee is collected it will be Partially credited to a signed contract on the first week of the project start.
"We completely redid our bathroom which included changing the layout, a very complex redo of plumbing lines, new concrete bathroom floor and installation of everything new and shiny. Dave was able to turn around this scary project into a wonderfully crafted beautiful looking bathroom. He is a very super detail oriented passionate artist. The project also included demo and installation of new tiles for the passage outside the bathroom and a new sliding barn door. Unlike other contractors, we had complete freedom in selecting the materials. Dave helped us throughout this tedious process via video calls and texts. Dave also had brilliant ideas and always gave us varying cost effective options for even the tiniest details. He was very transparent and patient with us. Thanks Dave and modern home improvements for this wonderful experience."
Shyam T on June 2021
At Modern Home Improvements Corp, we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. Modern Home Improvements Corp looks forward to earning your business! Estimates are free. If a consultation is provided there will be a fee based on the amount of time spent with the client at the property. A Fee will be collected by the representative of The Company at the end of the conciliation. Please note if any fee is collected it will be Partially credited to a signed contract on the first week of the project start.
"We completely redid our bathroom which included changing the layout, a very complex redo of plumbing lines, new concrete bathroom floor and installation of everything new and shiny. Dave was able to turn around this scary project into a wonderfully crafted beautiful looking bathroom. He is a very super detail oriented passionate artist. The project also included demo and installation of new tiles for the passage outside the bathroom and a new sliding barn door. Unlike other contractors, we had complete freedom in selecting the materials. Dave helped us throughout this tedious process via video calls and texts. Dave also had brilliant ideas and always gave us varying cost effective options for even the tiniest details. He was very transparent and patient with us. Thanks Dave and modern home improvements for this wonderful experience."
Shyam T on June 2021
Knutsford Descon, LLC
Knutsford Descon, LLC
We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!
"He put together a piece of equipment for me. On time very professional!!"
Daniel L on December 2024
We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!
"He put together a piece of equipment for me. On time very professional!!"
Daniel L on December 2024
JAFPC Architect
JAFPC Architect
John Anthony Ferraro P.C, Architect is a diverse practice with experience in schools, religious buildings, residential, municipal and commercial. It is my philosophy that Architecture is sculpted by Client needs. This thought process orchestrates a unique Client/Architect relationship from preliminary design through construction documentation. Licensed and insured in nine states, my practice offers comprehensive expedient service. I dedicate myself to providing professional and creative design in harmony with local and state requirements. As a member of the American Institute of Architects and nationally certified by the National Council Architectural Board, I mandate all documentation is executed with the highest professional and ethical standards. This assures each client excellence in the practice of Architecture. I trust you will find my qualifications satisfactory.
"Very helpful and professional.."
greg n on January 2011
John Anthony Ferraro P.C, Architect is a diverse practice with experience in schools, religious buildings, residential, municipal and commercial. It is my philosophy that Architecture is sculpted by Client needs. This thought process orchestrates a unique Client/Architect relationship from preliminary design through construction documentation. Licensed and insured in nine states, my practice offers comprehensive expedient service. I dedicate myself to providing professional and creative design in harmony with local and state requirements. As a member of the American Institute of Architects and nationally certified by the National Council Architectural Board, I mandate all documentation is executed with the highest professional and ethical standards. This assures each client excellence in the practice of Architecture. I trust you will find my qualifications satisfactory.
"Very helpful and professional.."
greg n on January 2011
The Washington, NJ homeowners’ guide to treehouse building services
From average costs to expert advice, get all the answers you need to get your job done.

Want to add value and living space to your home? Use this guide to figure out the cost to convert your garage into living space to see if it’s worth it.

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.

Few things elevate your outdoor space like a landscape architect can. Learn about how much a landscape architect costs and what affects your total.

A standard three-car garage square footage can vary depending on your vehicles and your intentions. Keep reading to learn more about three-car garage sizing.

How do you know the right floor plan for your home? Learn the difference between open and closed floor plans and how to choose the best one for your home.
•Discover the cost to convert a house to a duplex. Learn about average prices, cost factors, permits, and ways to save for your duplex conversion project.
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