Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in Deptford, NJ

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

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

Avatar for Legacy Construction Company LLC
Legacy Construction Company LLC
4.4(
56
)
Addition to Existing Structure - Build

Serving Deptford, NJ 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%
5 neighbors recently requested a quote
Avatar for All Serve Construction
All Serve Construction
3.9(
108
)
Addition to Existing Structure - Build

Serving Deptford, NJ and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"Bob and Rob were a true pleasure to work with. They were knowledgeable, responsive, and transparent. The entire crew was professional and quickly got the job done. I would recommend them to anyone looking for real quality work!. They poured a 24' x 30' pad and 18" x 36" footing for our garage. 4000# test with rebar and fibermesh. (we are installing a truck lift) so wanted concrete to handle heavy duty usage."
Response time2 days
48 neighbors recently requested a quote
Recommended by92%of homeowners
JWL Construction, LLC
5.0(
3
)
Addition to Existing Structure - Build

Serving Deptford, NJ and surrounding areas

Approved

In business since 1998

Free estimates

Customers say: Quick response

"It was a pleasure working with Wendy and Leo. They did an amazing job transforming my old outdated kitchen into a place I can love for years to come. I didnâ t always like the time line, but learned that a beautiful, livable space doesnâ t happen overnight. All I can say is â trust the processâ ! In the end you will be happy you did. Wendy and Leo worked with me to stay within my budget while still using top of the line cabinetry, countertops, flooring and accessories. I interviewed 4 different contractors before making a decision. You should hire JWL contractors. You will not be disappointed."
Response time5 days
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Imp-Pro's Home Improvement Company
Imp-Pro's Home Improvement Company
3.4(
21
)
Addition to Existing Structure - Build

Serving Deptford, NJ and surrounding areas

Approved

In business since 1978

Free estimates

Emergency services offered

"I had dealt with two other contracting companies before finding Imp-Pros. The owner, Lenny, personally helped us find the best and most cost effective way to replace six columns on our front porch and the brick moulding and some deteriorated wood jamb on our garage doors. He had his crew out to our house within just a few days and personally oversaw the work. They finished in an even shorter amount of time than estimated and did a beautiful job--for $3,000 LESS than the closest competitor. Even more, we felt respected and valued as customers. I highly recommend Imp-Pros to anyone needing home improvement services and am so very thankful that we found them!"
Response time1 day
Recommended by75%of homeowners
...
Showing 1-10 of 367
FAQs for addition to existing structure building service projects in Deptford, NJ

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 Deptford, NJ 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.