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

Avatar for Manfredia's Carpentry & General Contracting, LLC
Manfredia's Carpentry & General Contracting, LLC
4.6(
137
)
Addition to Existing Structure - Build

Serving Gwynedd Valley, PA and surrounding areas

Approved

Super Service Award Winner

In business since 1989

Free estimates

Warranties offered

"I originally hired Wally to replace two support beams that span a bilco opening on my 200+ year old stone house. The job was very delicate because temporary supports had to be installed before the original log beams could be removed. I had visions of my entire 3-story stone wall collapsing, but once I saw how meticulously his crew worked and the incredible results I knew that it had been done right. Once I realized Wally’s ability, I quickly hired him to do other repairs which included: -Replacing a beam in the basement -Thorosealing the stone foundation wall in the basement -Replacing two concrete pads on my sidewalk that were cracked -Fixing a 3’x3’ sink hole in my driveway -Pour a concrete pad for my Generac generator to sit on -Filling in an old vent hole and landscaping to ensure that the ground next to the house slopes away from the house When it comes to your home, there is little that Wally and his team can’t do. I give Manfredia's Carpentry my highest recommendation."
Additional Photos
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Additional Photos

+24

Response time7 hrs
10 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Francis X. White, Inc.
Francis X. White, Inc.
4.6(
168
)
Addition to Existing Structure - Build

Serving Gwynedd Valley, PA and surrounding areas

Approved

Super Service Award Winner

In business since 1979

Free estimates

Emergency services offered

"Francis X White went above and beyond our expectations and worked with us to demo our old kitchen and build a new addition with a second floor. Fran stayed within the quote and within our budget with little to no change orders throughout the project. Fran, Denis and their team were trustworthy, punctual, and respectful of our space during construction. They kept us informed daily and responded in a timely manner when and if we had any questions. They provided insight on design layouts and other ideas that never crossed our minds and even gave us advice after project completion. We did not have to stress or worry once while construction was going on and we are so pleased with the final result. Could not recommend Fran enough and would hire them again for future projects."
Additional Photos
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+46

Response time1 day
Response rate100%
6 neighbors recently requested a quote
Avatar for Nelson General Contractor LLC
Nelson General Contractor LLC
5.0(
13
)
Addition to Existing Structure - Build

Serving Gwynedd Valley, PA and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

"Fantastically well. The quality of the work performed was top notch and the individuals on the team were highly professional and very personable. The lead, Samuel Nelson, listened carefully to everything that I said and then provided valuable feedback that resulted in a better outcome and lower overall cost. I am more than pleased to be able to recommend Nelson General Contractor."
Remodeling - General Project
Remodeling - General Project
Remodeling - General Project
Had to build a more beefed structural wall.
Handymen Project

+21

5 neighbors recently requested a quote
Recommended by53%of homeowners
Avatar for MNB Renovations
MNB Renovations
5.0(
10
)
Addition to Existing Structure - Build

Serving Gwynedd Valley, PA and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"Matt and his team with MNB Renovations did a 32 x 24 addition that was basically a home build from the ground up. I am still surprised for the size of this project how stress free the process was. Matt was very detailed and checked in on everything to make sure we were getting what we wanted. In the end he asked us to make a list of anything that needed to be addressed and there was absolutely nothing to mention. They did a perfect job, the quality of the work is amazing, and the entire team was very nice, professional, and trustworthy! I absolutely recommend this company to others and will definitely use them again in the future!"
Kitchen Remodel
New stair case and great room
Oak staircase
Kitchen Remodel
Entry way

+181

Response time5 days
Response rate100%
3 neighbors recently requested a quote
Avatar for Legacy Construction Company LLC
Legacy Construction Company LLC
4.4(
56
)
Addition to Existing Structure - Build

Serving Gwynedd Valley, PA and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"I was very impressed with Gary and his team at Legacy Construction. He was very professional and responsive to my questions and provided knowledgeable answers. He also provided before and after pics and videos of the work in the roofs (main and sunroom) and the gutter system replacement and always kept me informed of their progress. In fact, I plan to use them again for additional home projects!"
Electrical Project
Roofing Project
Roofing Project
Electrical Project
Roofing Project

+262

Response time9 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for A.W. Martin, Inc
A.W. Martin, Inc
4.0(
72
)
Addition to Existing Structure - Build

Serving Gwynedd Valley, PA and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

"These guys put the ‘master’ back in ‘craftsman’! Once on the job, they are on-the-job! Professionals, they will arrive early, work all day and clean up their mess before leaving. If there’s a question about how to address an issue, they will ask the customer, but always have solutions to offer. Make sure you have all the items you’re responsible for ordered (appliances, counter top, cabinets, faucet, hardware etc.) and in-house, or with delivery dates because you will have trouble keeping up with them once they start! Quality of work is outstanding and always with an attention to detail. The job stayed on budget, all additional work was done under change orders – except one instance. Make certain to ask whether any changes being discussed come under the scope of the contract or are additional work. This is particularly important with sub-contractors like plumbing and electrical."
Seahorse Shower
Tile artwork
Shower pan
Jacuzzi tub
Natural stone wall

+39

Response time4 days
Response rate100%
7 neighbors recently requested a quote
Avatar for RHOUSE
RHOUSE
5.0(
9
)
Addition to Existing Structure - Build

Serving Gwynedd Valley, PA and surrounding areas

Approved

In business since 2017

Free estimates

Offers commercial services

"Couldn’t recommend highly enough! Rick and his team did an excellent job completing several projects in our home including building a gym in the previously unfinished section of our basement, transforming a den into a bar room for entertaining, and coming up with a creative and perfect solution to put an office in our basement. Rick is a great, trustworthy guy and does beautiful work!"
My Jobs
My Jobs
My Jobs
My Jobs
My Jobs

+19

Response time1 day
Response rate92%
On Call Contracting Services LLC
3.7(
28
)
Addition to Existing Structure - Build

Serving Gwynedd Valley, PA and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"John and his crew were a pleasure to deal with. John kept in constant communication with us and let us know what the problems were as well as the solutions. He and his crew went above and beyond to get our house ready to go on the market. We had a multitude of issues that needed attention and they got them all fixed up and looking good. John is extremely knowledgeable in all areas of construction and we would highly recommend him to anyone in need of his services."
Additional Photos
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Additional Photos

+112

Response time1 day
3 neighbors recently requested a quote
Recommended by82%of homeowners
F & M Custom Home Builder, LLC
3.7(
26
)
Addition to Existing Structure - Build

Serving Gwynedd Valley, PA and surrounding areas

Approved

In business since 1982

Warranties offered

Customers say: Quick response

"My experience with F&M Custom Home Builder was excellent. Denis was great to work with and communication during the project was excellent. The crew Harry, John, and Tim were amazing! The entire team was very experienced, knowledgeable, great atten tion to detail and very clean. They remodeled my tiny 1960s bathroom into a beautiful, functional, updated bathroom and I am so happy with the finished product. Thank you!"
 Rough Framing
 1
2
 1
 End Result

+33

Response time1 day
Recommended by70%of homeowners
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FAQs for addition to existing structure building service projects in Gwynedd Valley, 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 Gwynedd Valley, 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.