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

Andrade Construction
4.6(
13
)
Addition to Existing Structure - Build

Serving Grantsville, MD and surrounding areas

In business since 2013

Free estimates

Credit card accepted

"The whole process from our first walk through the model homes to closing and even the support afterwards has been so personal and much less stressful than it would have been without such talented, responsive, professional and capable leaders. The design center experience was so much fun despite the pressure of so many choices. The support and communication from our sale representative and construction manager throughout the building process was phenomenal. And now that we have moved in and are enjoying our new home, we continue to be impressed with amazing customer service and support. We can honestly highly recommend ANDRADE CONSTRUCTION to others and be excited for their journey. Huge thank you to MR. ABRAHAM"
Response time2 days
Recommended by91%of homeowners
Avatar for All Pro Exteriors
All Pro Exteriors
4.6(
62
)
Addition to Existing Structure - Build

Serving Grantsville, MD and surrounding areas

In business since 1991

Emergency services offered

"His work was outstanding in all respects. He was completely trustworthy.  His price was right in the middle of all the estimates I got. In my case he stuck to his estimate but he didn't find any unexpected damage while he was working either. He did the job in 4 hours less than quoted maximum time frame. I'd have no hesitation in recommending his services are using his services again.
"
Recommended by94%of homeowners
Avatar for Homemade Design
Homemade Design
3.7(
322
)
Addition to Existing Structure - Build

Serving Grantsville, MD and surrounding areas

In business since 2006

Credit card accepted

"I never contacted the provider or used this service in anyway. I have to
write this review so that the request to write this review stops
popping up.
The rating is bogus as it is required to be able to submit.
"
Pennsylvania Master Bathroom
Boston Small Condo Kitchen
California Client Saves with HMD Designer Discounts
Recommended by54%of homeowners
Avatar for Jill Seidner Interior Design
Jill Seidner Interior Design
3.5(
89
)
Addition to Existing Structure - Build

Serving Grantsville, MD and surrounding areas

In business since 2006

Credit card accepted

"Once I sent her all the measurements, it took her a little while to get the options back to me.  Overall, they're good designs.  However, they're very simplistic and give general ideas for space planning.  I was hoping to have a better idea for sizes of furniture for the space and some variations on staging.  
Jill was very responsive when I did have a question.  I'm not sure how helpful it is to have a virtual design done.  If we lived in similar cities, I'd probably use her again for help with additional designs.
"
Recommended by55%of homeowners
Ashby Builders, LLC
5.0(
3
)
Addition to Existing Structure - Build

Serving Grantsville, MD and surrounding areas

In business since 2002

Free estimates

Offers commercial services

"We had interviewed a couple different builders, and Michael made us the most comfortable! They listened to everything we wanted throughout the entire process. They are quality people who I trust. They even do work for us while we are not even home! We just contracted them again to finish our basement! They are doing it exactly the way we want, without us being there. -Dan"
Response time2 hrs
Recommended by100%of homeowners
Avatar for Rebuilders
Rebuilders
4.5(
2
)
Addition to Existing Structure - Build

Serving Grantsville, MD and surrounding areas

In business since 1993

Emergency services offered

Credit card accepted

Rebuilders specializes in emergency commercial restoration across the Mid-Atlantic servicing West Virginia, Pennsylvania, Ohio, and Maryland, ensuring minimal downtime so you can get back to business as quickly as possible.

Mountaineer Field-house
Mountaineer Field-house
After restoration of this charming bungalow!
Mountaineer Field-house
Mountaineer Field-house

+13

Recommended by100%of homeowners
Whitehorse Woodworks
5.0(
1
)
Addition to Existing Structure - Build

Serving Grantsville, MD and surrounding areas

In business since 1987

Free estimates

"Whitehorse Woodworks was contacted (along with several other companies) about building a deck on the backside of my home. Lowell listened to what I was looking for in a deck, provided suggestions and recommendations for what would suit my needs. He also provided the best estimate. He then scheduled this project in a timely manner. Lowell and his crew did an absolutely wonderful job! I have received many compliments on the design, and the beauty of this new deck."
Response time6 hrs
Recommended by100%of homeowners
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FAQs for addition to existing structure building service projects in Grantsville, MD

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 Grantsville, MD 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.