How much do addition contractors typically cost?
- GAITHERSBURG, Maryland Average$81,330
- Typical Range$43,250 - $127,416
- Low End - High End$15,000 - $216,000

"Our kitchen remodel with Top Remodeling was a breeze! Ben's attention to detail made all the difference. We couldn't be happier with our beautiful new kitchen."
Randy A. in October 2023

Carpentry, Home Remodeling, Interior Trim , and 2 more
"Noel and his team did a speedy and fantastic job installing the fence. Would recommend, and I plan on calling him again when it’s time to re-do my deck."
Bradley R. in November 2021

Remodeling
"I recently hired Solid Foundation Construction LLC to replace my carpet with vinyl flooring, and the results are absolutely perfect. I’m a very detail-oriented, high-maintenance client who is rarely fully satisfied — yet this project exceeded all my expectations. The quality of the work is outstanding. The crew worked incredibly hard from morning until evening, moved quickly without sacrificing precision, and delivered flawless results. My floors look stunning, and I truly couldn’t be happier. The owner is also a pleasure to work with — professional, responsive, and genuinely committed to making sure everything is done right. I would recommend Solid Foundation Construction to absolutely anyone looking to improve their home. Do not hesitate to hire them. I already can’t wait to work with them again on my next project!"
9AC35969DCE1E290D04B7BA901D0D77D00A481099C45B1D80CAEA4605F0995D1 0. in December 2025

New Kitchens, We Specialize in Basements, First and Second-Floor Additions are Our Specialty , and 2 more
"When I filled out the home advisor estimate form, I immediately began getting calls from contractors. I wasn't quite ready to start talking to an actual person so I avoided all contractor calls. One day, however, my toddler picked up the phone and Jimmy was on the other end. I explained I wasn't ready to proceed yet (since we hadn't bought the house yet) and he was not pushy... just told me to call him when I was ready. He followed up only once in 3 months which was great. I didn't feel pushed or rushed. Once we were ready, I contacted Jimmy to get an estimate on building a bathroom within the existing house. I got two quotes and his was significantly cheaper. The other company wanted me to spend so much money on things I didn't need. Jimmy came in, knowing we were on a budget, built us a beautiful bathroom with everything we needed, not any more or any less. Jimmy's workers are polite, professional, and they cleaned up each day before they left. The entire bathroom was built in under two weeks! Since then, I have hired MESCO to do some other smaller jobs such as rebuilding our pantry and finishing part of our basement. I explained my needs and he just knew exactly how to design the pantry. He even sound proofed the ceiling of our basement with insulation since he knew our son played drums down there. I'm not sure how many other contractors would have gone above and beyond like that. Jimmy is kind, professional, accessible (a huge bonus), and a delight to work with. I can't think it's anything short of a miracle that my daughter picked up the phone when he called. Had it not been for that, we may have spent a ton of unnecessary money and had headaches from another contractor. (I have had bad experiences in the past.) If you are wondering whether or not to use MESCO, I can't praise them highly enough. They are a wonderful company who clearly care about their customers' satisfaction more than making a quick buck and moving on to the next job. From start to finish MESCO delivered in both product and customer service and I am so grateful for that. They will be my contractors for any future work I have. Thanks Jimmy!"
Catherine S. in June 2015
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Depending on the type of project, you may find subtle differences in the hiring process. Here’s a look at task-specific advice.
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Your research doesn’t stop here. Once you’ve found a few prospective companies, make an call to ask a few questions about work history, licensure and more:
In most cases, the responses you get to these three questions will give you a very good idea of the right pro for your project. If you have more than one front-runner, these additional questions can help you narrow it down.
Any good contractor will answer these questions, and most will appreciate dealing with a client that takes such an active interest in finding good service. On the other hand, if a contractor gives you a hard time with these questions, you probably want to find someone else.
GAITHERSBURG Addition & Remodeling Contractors are rated 4.8 out of 5 based on 78 reviews of 78 pros.
The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.
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