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Top-Rated Addition to existing structure builders in Boise - Updated Nov 2026

Avatar for Urban, LLC.
Urban, LLC.
4.5(
92
)
Addition to Existing Structure - Build

Serving Boise, ID and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Easy to work with, Nick is a great contractor and has great subcontractors who are very pleasant to have them around and they did great work. Pay attention to the detail and work hard to get it right."
Royal Plaza (Boise, ID)
Denver St.
Banbury Modern
Royal Plaza
Denver St.

+130

Response time5 hrs
Response rate100%
1 neighbors recently requested a quote
Sublime Contracting, LLC
4.9(
10
)
Addition to Existing Structure - Build

Serving Boise, ID and surrounding areas

Approved

In business since 2016

Credit card accepted

Offers commercial services

Remodeling kitchens, bath, flooring, whole home. Call 208-350-9394 for estimate. We love to work with customers to make the most out of their home or business space. Specializing in remodeling and flooring we have qualified staff and access to contractors to handle almost any job. Let's talk and see if we're right for you.

7 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Golden Tree Property Solutions
Golden Tree Property Solutions
3.8(
22
)
Addition to Existing Structure - Build

Serving Boise, ID and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

"Gail built an enclosed patio for my sister, and the quality is far beyond what we expected. We originally planned on a simple vinyl enclosure, but Gail’s price for a solid-walled, insulated room was comparable to vinyl and much lower than another solid-wall bid we received. We were out of state but Gail communicated clearly the entire time. His detailed plans made the permitting process quick, and he handled tricky parts of the project, including coordinating around the home’s solar panels. He even graciously stepped in to help with a few unrelated issues at the house, sometimes at no charge. The finished patio looks like an original part of the house. Gail matched the siding and tied into the existing roof seamlessly. We were so happy with his work that we hired him again for landscaping, sod, pavers, and fence repairs. Gail and his wife are kind, honest, and great to work with. I would absolutely recommend considering Gail for any project you have!"
Response time11 hrs
1 neighbors recently requested a quote
Recommended by57%of homeowners
Avatar for Kidder & Co.
Kidder & Co.
5.0(
5
)
Addition to Existing Structure - Build

Serving Boise, ID and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

Kidder & Co. brings a design-build approach to outdoor spaces — new construction installs, water feature work, and full landscape renovations. We treat every property with the same care and craftsmanship as the inside of a home, building things meant to last, not just get by.\n\nEvery project starts with a plan and ends with something built right. Licensed and insured in Idaho.\n\nLet's talk about what you're trying to build.

Landscape Installation
Landscape Installation
Retaining wall and sod prep
Landscape Installation
Landscape Installation

+1

1 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Gem Valley Construction & Design LLC
Gem Valley Construction & Design LLC
5.0(
8
)
Addition to Existing Structure - Build

Serving Boise, ID and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

"Tried several contractors, these guys are the best. Great communication, detailed contact prior to starting outlining scope of work, so we knew we were on the same page with everything that needed to be done. Extremely hard working, kept to schedule even though we threw some curve balls their way. Knowledgeable, remedied previous contractors mistakes in structural additions. Very fair and honest, went above and beyond to change several things that we changed throughout the process. Fair price and good, transparent accounting of materials and costs. They do it all, structural, shelving, electrical, paint.. and anything they did not have immediate expertise in, Rus had a guy or two we got quotes from (tile, etc.). We will definitely call these guys again with any projects we need done. Highly recommend. Good job!!"
Personal Shop with ADU
Framing Completed
Deck completed, awaiting metal rails
Truss Installation
Personal Shop with ADU

+72

Response time1 day
Recommended by71%of homeowners
Avatar for Gem State Construction Services, Inc.
Gem State Construction Services, Inc.
4.5(
10
)
Addition to Existing Structure - Build

Serving Boise, ID and surrounding areas

Approved

In business since 2005

Free estimates

Small jobs welcome

"Excellent workmanship, Blended the repair so it looks like no damage ever happened to my house after a car did major damage. Easy to work with. I will definitely contact Gem State Construction Services for my next project or remodel."
Complete Home Remodel
Complete Home Remodel
Complete Home Remodel
Complete Home Remodel
Complete Home Remodel

+23

Response time7 hrs
Recommended by100%of homeowners
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Showing 1-10 of 197
FAQs for addition to existing structure building service projects in Boise, ID

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Boise, ID homeowners’ guide to addition to existing structure building services

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