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

Avatar for Rough Diamonds Construction LLC
Rough Diamonds Construction LLC
5.0(
14
)
Addition to Existing Structure - Build

Serving Johnstown, PA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Nate and his guys are an absolute joy to work with. So very knowledgeable, kind, attentive and caring. They listen to your wants and needs, they make recommendations and explain why they suggest it. They are all around wonderful people and they do great work! I'd call them for every job. They can handle anything that needs done so it is fantastic to know you can get it all done without worry."
My jobs
My jobs
My jobs
My jobs
My jobs

+8

Response time11 hrs
Response rate90%
2 neighbors recently requested a quote
Avatar for Brody's Services
Brody's Services
5.0(
22
)
Addition to Existing Structure - Build

Serving Johnstown, PA and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"I recently had my bathroom completely transformed by Brody and his crew, and I could not be happier with the results. From the initial consultation to the final walk-through, their professionalism and attention to detail were outstanding. They listened to my vision and brought it to life with stunning tile work, modern fixtures, and impeccable craftsmanship. The project was completed on time and within budget, which was a pleasant surprise given the quality of work. The team was courteous, clean, and communicative throughout the entire process. My bathroom now feels like a spa retreat, and I have Brody?s Services to thank for that. Highly recommend for anyone looking to elevate their bathroom experience."
Bathroom
Bathroom
Bathroom
Bathroom
Bathroom

+2

Response time8 hrs
Response rate97%
19 neighbors recently requested a quote
Avatar for AG Built Construction Co.
AG Built Construction Co.
New to Angi
Addition to Existing Structure - Build

Serving Johnstown, PA and surrounding areas

Approved

In business since 2020

Free estimates

Small jobs welcome

AG Built Construction Co. is a small, family‑driven crew offering reliable construction and renovation work. We bring hard work, honesty, and hands‑on skill to every project and treat each job like it’s our own

Building
35 neighbors recently requested a quote
Avatar for Rock-A-Fellas Co Inc
Rock-A-Fellas Co Inc
4.5(
23
)
Addition to Existing Structure - Build

Serving Johnstown, PA and surrounding areas

In business since 2003

Credit card accepted

"The project went extremely smooth with no damage to the yard. Bob and his crew were punctual and the cleanup was thorough.I would
 highly recommend his companys sevices to anyone needing a shed or gazebo.


"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+14

Recommended by100%of homeowners
Avatar for P&Bs Service
P&Bs Service
5.0(
17
)
Addition to Existing Structure - Build

Serving Johnstown, PA and surrounding areas

In business since 2022

Free estimates

Emergency services offered

"Tony is the best general Contractor I have ever had to do some work for me on my house. Very knowledgeable and efficient and honest and easy to get along with. Did a great job and highly recommend him all all types of general contractor work, mechanical, electrical, plumbing, painting, etc"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

Recommended by100%of homeowners
Avatar for M and S Seamless Gutter
M and S Seamless Gutter
4.7(
73
)
Addition to Existing Structure - Build

Serving Johnstown, PA and surrounding areas

In business since 2018

Free estimates

Warranties offered

"We were ABSOLUTELY impressed and happy with our entire experience, from the estimator to the installers! Very nice and knowledgeable people who truly care about their customers and work they do. Not one thing to complain about!! AAA+++"
replacing gutter on front of house
log cabin
log cabin
log cabin
Hip around

+2

Response time1 day
Recommended by96%of homeowners
Avatar for Samurai Property Services
Samurai Property Services
5.0(
5
)
Addition to Existing Structure - Build

Serving Johnstown, PA and surrounding areas

Emergency services offered

"Adam and Kevin were professional and are both skilled in their craft. From the first consolation I felt like they understood my goals for the fence project. Ultimately I decided to go with Samuri because of their skill, kindness, and craftsmanship; which all show through their work! I’d recommend them for any project— thank you again"
Additional Photos
Recommended by100%of homeowners
Avatar for Eco Builder Services Co
Eco Builder Services Co
3.9(
46
)
Addition to Existing Structure - Build

Serving Johnstown, PA and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"The estimate was provided the same day they came to look at the roof.  The estimate was detailed and easy to read.  Gino kept me informed of all the steps and the work was completed on time.  Very professional.
"
Recommended by64%of homeowners
Avatar for Homemade Design
Homemade Design
3.7(
322
)
Addition to Existing Structure - Build

Serving Johnstown, PA and surrounding areas

In business since 2006

Credit card accepted

"The man I talked to was very professional and timely. However, he explained that this particular job was beyond the scope of what their company does. I would certainly use them on another 'issue'.
"
Pennsylvania Master Bathroom
Boston Small Condo Kitchen
California Client Saves with HMD Designer Discounts
Recommended by54%of homeowners
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FAQs for addition to existing structure building service projects in Johnstown, PA

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 Johnstown, PA 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.