Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in Nassau, DE

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.

Find Addition to existing structure builders in Nassau

Avatar for M Phippin Contracting Inc.
M Phippin Contracting Inc.
5.0(
22
)
Addition to Existing Structure - Build

Serving Nassau, DE and surrounding areas

Approved

In business since 2012

Free estimates

Warranties offered

"Mike and his son did all the work themselves. Came out and gave a free estimate, priced the project, then got right to work once the job was accepted. They worked quickly, efficiently, and did an excellent job. They kept the workspace clean and cleaned up thoroughly upon completion. They punched a hole through the wall to install a new window. The drywall on the inside has a texture and had previously been redone horribly. Mike fixed it right up around the window to match the rest of the walls. On the outside he fabricated a boarder to make the aluminum siding match up with the window frame. Overall it was excellent work!"
Decks & Porches Project
Bethany Beach Kitchen
Bethany Beach Privacy Carport
Selbyville, Del. Kitchen Remodel
Entry Door

+190

Response time1 day
Response rate100%
3 neighbors recently requested a quote
Avatar for Last Looks LLC
Last Looks LLC
5.0(
27
)
Addition to Existing Structure - Build

Serving Nassau, DE and surrounding areas

Approved

Super Service Award Winner

Free estimates

Warranties offered

Credit card accepted

"Tony did a fantastic job! He was very helpful with suggestions in the design of our deck. After the old deck was removed he found some structural issues. He did a great job of making our deck structurally sound. Our deck was completed in a timely fashion as promised. His workmanship and attention to detail can be seen in our finished product.Tony was extremely easy to work with and would highly recommend him for any project"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+96

Response time4 days
Response rate100%
5 neighbors recently requested a quote
Coastal Home Renovations
4.8(
42
)
Addition to Existing Structure - Build

Serving Nassau, DE and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"Dealing with Joe Graham was outstanding! He was prompt in getting back to us with any questions or requests we had. He was also extremely patient as we made changes as we went along which were not contemplated originally. We had major renovations to the bathrooms, kitchen, laundry room, replacement of the deck and the addition of a sunroom and painting throughout. The quality of the work was superb from painting, to tile work, to carpentry. I would recommend Coastal Home Renovations for any modifications around a house. Absolutely fantastic!! Highly recommended!!"
Response time3 days
3 neighbors recently requested a quote
Recommended by97%of homeowners
Callaway Corporations LLC
4.7(
24
)
Addition to Existing Structure - Build

Serving Nassau, DE and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

We offer financing and will deal directly with your insurance company if you need assistance.\n\nCallaway Corporations LLC offers a discount to first responders and veterans. With 20+ years of industry experience, we offer top-quality additions, decks, roofing, windows and doors, gutters, and more! Give us a call today! \n

14 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Accessible Home Builders, Inc.
Accessible Home Builders, Inc.
3.7(
76
)
Addition to Existing Structure - Build

Serving Nassau, DE and surrounding areas

Approved

In business since 1994

Free estimates

Warranties offered

"Scott was very professional. He explained the process of what was being done on the building of the screened porch each day. His crew was also professional and courteous. Completed porch came out beautiful. Would definitely recommend them."
Beautifully Detailed Deck
 Family Room Addition
Windows/Siding Complete
 Screened Porch Addition
 Screened Porch with Double Doors

+42

Response time10 hrs
29 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Elite Construction
Elite Construction
5.0(
11
)
Addition to Existing Structure - Build

Serving Nassau, DE and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Credit card accepted

"I worked with Elite Construction to transform my old garage into a one bedroom home, and I couldn’t be happier with the result! Every detail was handled meticulously, from the design phase to material selection, construction, and final delivery. The team's friendly communication and creative solutions that exceeded my expectations truly impressed me. Now, I proudly enjoy this space that has been transformed into a stunning living area. Thank you for this amazing transformation! Definitely Elite Construction I would love to work with again.""
Response time12 hrs
Response rate100%
1 neighbors recently requested a quote
Avatar for Eagle Eye Contracting
Eagle Eye Contracting
5.0(
10
)
Addition to Existing Structure - Build

Serving Nassau, DE and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"James was professional, competent, creative, punctual and pleasant. He was eager to satisfy and anxious to accept any new challenges. His skill, versatility and strength enabled him to accomplish all tasks to perfection. I highly recommend Eagle Eye for whatever household projects you need."
Patio door replacement
Interior doors
Stairs and railings
Stairs and railings
Stairs and railings

+34

Response time3 days
Response rate100%
3 neighbors recently requested a quote
Avatar for Preston Building
Preston Building
5.0(
1
)
Addition to Existing Structure - Build

Serving Nassau, DE and surrounding areas

Approved

In business since 2005

Free estimates

Customers say: Quick response

"I can't say enough good things about my experience with Randy Preston and his crew!! Randy helped me renovate a garage that was in SEVERE disrepair into a beautiful and charming studio cottage. The craftsmanship was excellent. I regularly get compliments and feedback that the cottage has the feel of a home that's been there forever (think circa 1940's cottage). The crew was always on time, kept the site neat and clean and were super easy & pleasant to work with. Randy's personality is "steady and calm" - nothing ever felt like a problem - if it was within his power, he handled it and if it wasn't, he helped me figure out next steps. Renovations are rarely stress-free but Randy's nature helped to make it as stress-free as possible. I think the thing I was most impressed with was his transparency and honesty. He was the only contractor that provided me with a fully itemized estimate. I knew exactly how much was budgeted for EVERYTHING and at the end of the construction, he actually credited me back money for things I would have NEVER known cost less then estimated. Every step of the process (that he had control of) was great. I'd hire him again in a heartbeat and hope I do get to use him again for a future project I have in mind. If I haven't gotten the point across yet, I highly highly recommend!!"
Response time2 days
Recommended by100%of homeowners
DUTCH BROTHER'S, INC.
New to Angi
Addition to Existing Structure - Build

Serving Nassau, DE and surrounding areas

Approved

In business since 2009

Free estimates

DUTCH BROTHER'S, INC. has been in business for over 50 years! We specialize in all your Decks and Additions needs, we are your guys! We strive to exceed the homeowners expectations each and every time, and get the job done the way you want it. We work in a timely fashion, and always pay attention to detail. Proudly serving Harbeson and surrounding areas. Free estimates, call today!\n

...
Showing 1-10 of 147
FAQs for addition to existing structure building service projects in Nassau, DE

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 Nassau, DE 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.