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Home Addition & Extension Contractors in St. Louis

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St. Louis / 50 mi
Home Additions
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1,080 Professionals

Featured Reviews for Home Addition & Extension Contractors in St. Louis

Exquisite Homes By TXR
Home Addition & Extension Contractors in St. Louis
Average rating: 5 out of 5 starsNovember 8, 2015
“We hired TXR to build our home on empty land that we had purchased. TXR came out to the building site several times to survey it and look at it to get ideas on how to situate the home. Their architect listened to what we wanted in the house and he drew up plans that were perfect the first time. The architect drew the plans specifically to fit on the piece of property to maximize every view of the lake and made sure every room had a lake view. TXR then oversaw the building of the house, doing many things themselves and subcontracting for electricity, plumbing, cement etc. They met with us often and kept us up to date on everything going on. They provide receipts of every bid and money spent so you always know where the money is going. Everyone at TXR is easy to work with and they work hard to make sure their customers are taken care of. We would build with them again without hesitation.”
LU Design Build
Home Addition & Extension Contractors in St. Louis
Average rating: 5 out of 5 starsJuly 15, 2017
“Skilled craftsman. Professional, efficient, courteous. I initially hired a contractor that completely failed me and created more problems. LU Design Build not only fixed the mess they walked into, but actually made the process enjoyable! I absolutely love my new kitchen/living area!”
Barton Legacy Builders
Home Addition & Extension Contractors in St. Louis
Average rating: 5 out of 5 starsOctober 27, 2021
“Jim Barton from Barton Legacy Builders was prompt, knowledgeable, professional and friendly. His work was quality craftsmanship and he fulfilled all requirement of the contracts we had with him. He tore out rebuilt the floor of our deck and stairs in a a professional manner and completed the job in a very reasonable amount of time. We liked his work so much that we hired him a second time to tear down and rebuild stairs at another property. I highly recommend him as a contractor. I have already passed his name along to a couple of other friends.”
Lakeside Renovation & Design
Home Addition & Extension Contractors in St. Louis
Average rating: 5 out of 5 starsFebruary 16, 2017
“After meeting with several other companies we contacted with Lakeside Exteriors and from our first meeting we felt confident that we were in good hands. They listened to our ideas, considered and offered opinions and as a result we were very pleased with the outcome. Hardee Siding, soffits, guttering, roof windows and an architectural roof. Our home is beautiful ....than you Lakeside for a job well done.”
Mosby Building Arts
Home Addition & Extension Contractors in St. Louis
Average rating: 5 out of 5 starsSeptember 14, 2012
“My husband and I hired Mosby Building Arts to remodel our kitchen and to replace an existing deck with a three season room. I was dreading the thought of construction but the professionals at Mosby from the engineers, to the design crew to the craftsmen who worked on our project made the entire process flow so smoothly that before I knew it we had our marvelous living space redone and enjoying the fact that it was so much more functional than it had been before. Mosby took a great deal of time in the planning stages of our project, asking questions about what we liked about our living space and what things we wanted to change. With such great dialogue and attention to detail, we were able to create a kitchen, laundry room and three season room that is MUCH better suited to our work flow, entertainment habits, and daily needs than the original home layout. It could not have been a more pleasant experience. I would recommend Mosby to anyone who is looking to make their home a better place to live.”
G. Terbrock Luxury Homes
Home Addition & Extension Contractors in St. Louis
Average rating: 5 out of 5 starsMarch 20, 2014
“Greg is the kind of guy who has home building in his bones! His Dad was a builder. He grew up building and has an obvious passion to build. Greg spends a significant amount of time working on bettering his business. His homes are some of the finest built. Give him a call.”
Killeen Studio Architects
Home Addition & Extension Contractors in St. Louis
Average rating: 5 out of 5 starsMarch 9, 2015
“We loved working with Killeen Studio Architects. We needed drawings to buid a laundry area in our 100-year-old St. Louis condo. The project included demolition of a closet that divided the condo’s large hall into two awkward spaces. Our new laundry is still under construction but we can already see it makes better use of the space. Mike Killeen and his team not only turned the drawings around fast, but also gave us advice, ideas and the names of trusted contractors. The whole experience was very professional, the drawings were exactly what we needed and the price was reasonable. We will certainly use Killeen Studio for our next project and I have no hesitation recommending them to others.”
Christopher D. Marshall Architect, LLC
Home Addition & Extension Contractors in St. Louis
Average rating: 5 out of 5 starsOctober 29, 2014
“We hired Chris to help us plan out our kitchen/living room/deck remodel, as you can see on his Houzz site it turned out beautifully. It is the kitchen of our dreams! He also invisioned details that we would never hav e thought of. Most notable opening up the hallway to go through from front door to the back deck doors. Check out kitchen and living room remodel at Christopher Marshall in the architect section of Houzz. We couldn't be happier with his professional is and foresight.”
Aptitude Design & Build
Home Addition & Extension Contractors in St. Louis
Average rating: 5 out of 5 starsAugust 25, 2012
“We hired Aptitude Construction for a bathroom remodel. We found them very professional, flexible and friendly. We LOVE our new bathroom and are so pleased with their work. We intend to use them again soon !”
Donna F. Boxx, Architect, P.C.
Home Addition & Extension Contractors in St. Louis
Average rating: 5 out of 5 starsFebruary 9, 2014
“Donna, Allan, and their architectural support team are amazingly and refreshingly personal, creative, professional, and responsive. They were able to take an old 70s ranch with all its oddities and convert it into a new craftsman style home. They listened carefully over many conferences to come up with a creative design, worked within our budget to get us what we needed, revised and revised patiently to get it perfect, and then followed up with on the job supervision and sometimes substantive changes on the fly, including invaluable help with the governmental review process. They all worked so well with our construction crew, who had their cell numbers for on the spot questions about plans or problems, of which, one can imagine, there were many. Thanks to Donna's architectural design (the neighbors are truly in awe of the front elevation and interior transformation), Allan's meticulously drafted plans (the city review board and fire teams said they had never seen such meticulous detail), and the respectful collaboration with all involved (we are all still talking to each other after what ended up being a tedious, four year project), we now have the transformed home we wanted when we started: solid as a rock and nearly soundproof, aesthetically consistent with the older parts of the house, and the openness, light, and functionality of a new home, even if it all drove Donna and Allan crazy sometimes trying to get it for us! They did it all with a smile, and with exceptional professionalism. They certainly went the distance for us, and are just an awesome team. They have my highest recommendation as an architectural firm.”
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Find home addition or extension contractors near me on Houzz

Before you hire a home addition or extension contractor in St. Louis, Missouri, browse through our network of over 1,090 local home addition or extension contractors. Read through customer reviews, check out their past projects and then request a quote from the best home addition or extension contractors near you. Finding home addition or extension contractors in my area is easy on Houzz.


How do I find a local Home Additions Professional in St. Louis?

Just answer a few questions to get matched with a local Home Additions Professional.
Or browse through the list of trusted Home Additions Professionals in St. Louis on Houzz: See St. Louis Home Additions Professionals’ profiles, dive into their work photos and check out customer reviews.
  1. Reach out to the pro(s) you want, then share your vision to get the ball rolling.
  2. Request and compare quotes, then hire the Home Additions Professional that perfectly fits your project and budget limits.

What services do Home Additions Professional companies provide in St. Louis?

The most popular Home Additions Professional Services in St. Louis are:
  • Room Addition Construction
  • Second-Story Addition
  • Garage Conversion
  • Sunroom Installation
  • In-law Suite Construction
  • Bump-Out Addition
  • Porch or Deck Addition

How many Home Additions Professionals are in St. Louis?

There are 1,090 Home Additions Professionals, registered on Houzz in St. Louis.

I want to put an addition on my house, where do I start?

To start your Home Addition project, follow these essential steps:
  1. Determine your needs and establish a budget for your home addition project.
  2. Hire a reputable contractor who specializes in home additions. They bring valuable expertise to the table, help you refine your plans, advice cost-effective solutions.
    • Check reviews and project photos of Home Addition professionals in St. Louis from this page, or just fill the form on top of the page and we will help you with the search.
  3. Collaborate closely with your contractor to plan and design your addition.
  4. Ensure that you obtain all necessary permits and approvals before proceeding with the construction.
The majority of the contractors can help you with the formalities too. A clear understanding of your needs and budget and involving a contractor early on can streamline the process, save time, and ensure a successful home addition project.


What are the most cost-effective home additions?

Here are types of cost-effective home additions that are considered to be a good value for your money:
  1. Guest Bedroom: Provides space for visitors or potential rental income.
  2. Nursery: Affordable option for growing families.
  3. Kitchen Extension: Adds value and functionality to your home.
  4. Second-Floor Bathroom: Convenient for multiple bedrooms.
  5. Garage Conversion: Repurposes existing space for various needs.
  6. Basement Finishing: Utilizes unfinished space for extra rooms.
  7. Sunroom or Enclosed Porch: Affordable way to expand living space.
  8. Home Office: Creates a dedicated workspace.
These additions are considered cost-effective because they offer practical benefits, add value to your home, and can provide a good return on investment. Factors like location and specific needs can influence cost-effectiveness. Consult a professional home addition contractor in St. Louis to find the best option