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  3. Compare quotes and choose the best pro for the job.

Addition Contractors In Your Area

  • Palm Construction, Inc.

    "My friend recommended me Palm Construction on my roof replacement and I contacted them, they gave me unbeatable offer, I know because I contacted also some other recommended contractors so I hired them. And I'm so happy about it , Adam and his team did incredible job, my new roof is amazing and it passed all inspections easily. I highly recommend Palm Construction, they are experts for any roof job."

    5.0 star review from Roberto G. in San Diego, CA

  • Done Right Home Remodeling, Inc.

    "Done Right Home Remodeling crew recently remodeled our kitchen. What we loved about working with them was, nothing we asked was too much trouble and when I changed the plan a little, again no problem. Mark always took care of our requirements and gave our ideas into design. This just made our whole experience stress free. The service from start to finish was fantastic leading to a beautiful result. Thank you."

    5.0 star review from Linda R. in Santa Clara, CA

  • Bay Home Remodeling, Inc.

    "We are extremely happy with the beautiful bathroom renovation Bay Home Remodeling gave us. Tom Edi and his crew were skillful in every procedure we requested: plumbing, electrical, tile, hardware, painting and frequent updates. Our house is an old one and we asked for a complete existing bathroom demolition to the frame with all new plumbing and wiring. Tomâ s crew expertly managed this perfectly to building codes and gave us a bathroom we are proud of. We canâ t be more pleased with the workers who accommodated us with consideration and kindness. As project manager, Tom stopped by every day to check on his crewâ s progress and brief us on any issues or problems. He even accompanied us to the tile store to advise us on floor, wall and grout requirements. He is truly a hands-on supervisor. Every project has at least one major difficulty. Ours was termites. Tom accommodated the required delay to treat the condition by working around the termite control service. Our furniture and carpets were protected during the renovation and our private property was respected by his crew. We highly recommend Bay Home Remodeling for any construction or remodeling work. Frank & Lois, Pleasant Hill"

    5.0 star review from Frank B. in Pleasant Hill, CA

  • Build UR Dream Builders, Inc

    "Constructing a new property was a challenge for me. I was bothered by several people in almost every sector while going through the task of construction. Finally, my friend recommended the name of BuildUrDream to me. Fortunately, I got someone who is going to listen to my requirements. Without ignoring any of the smaller details, they completed the task of constructing my dream home. Apart from this, I completed the whole task within a pocket-friendly budget for sure. "

    5.0 star review from antonio . in Burlingame, CA

  • Creation 7 Builders

    "We had the pleasure of working with Creation 7 and Yaniv, our project manager. Our project was a large-scale remodel of a 4000+ sf house, that transformed an uninspired, outdated, and dark interior to a modern, light-filled interior. As an architect-owner with much design time and emotion, as well as money invested in the project, I probably rank pretty high on the fastidious scale of clients. Yaniv was conscientious about following up with any concerns I had on work in progress. We worked through the challenging pieces of my project with tight dimensional tolerances and unusual details including large scale pivot doors, blind doors, skylight wells with complex geometries, flush invisible baseboards, stepped reveal between wall and stairs, and others. This care was taken while sticking to the construction schedule, and allowing us to move in on-schedule (which also allowed us to move out of our previous house and to sell it). We thoroughly enjoy our new house. Thank you to Yaniv and the entire Creation 7 team! "

    5.0 star review from Abe S. in null, CA

  • Ivan Alberto Rivera Rivas

    "On south & west sides (1100 sf), complete stucco plaster removal & replacement, termite & woodrot repairs, some framing & structural work, removal & replacement of exterior sheathing, new ext wall insulation, replace outdated electrical wiring. Worked continuously start to finish in 2 months. A little light on the documentation, so need to be explicit on scope of work & add costs on paper. Great value & good workers."

    4.5 star review from Jim R. in San Francisco, CA

  • California Custom Construction

    "I hired Joe to do a tile job in my bathroom. I had a half tile shower with a seat in it, also tile around my bathtub and floor with a drain installed on the floor. The tile came out just beautiful. Also, when I was overseas, I called Joe for an emergency plumbing job under my rental. He came the same day and did the repair. I am glad to have someone to call and trust the job will be done correctly and fairly."

    5.0 star review from Michael A. in Arcata, CA

  • We Do Construction, Inc.

    "Jacob with Wedo Construction did amAzing work in my backyard new synthetic turf , paver patio and a seating area , we simply are in love with our new backyard , thank you so much Jacob and Team!!! "

    5.0 star review from Aaron M. in Sunnyville, CA


How much do addition contractors typically cost?

  • San Francisco, CA Average
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  • Typical Range
    $38,300 - $300,000
  • Low End - High End
    $5,800 - $300,000

Expanding your house is a major undertaking. Not only are you altering your existing exterior walls, you are most likely adding new electricity, foundation, and plumbing. Even planning a room addition needs a lot of groundwork before construction begins.

Home addition companies know how to plan, construct, and finish any room and can even add a second story to a single story house. Find local contractors who will work with you to:

  • Make the best use of your existing floor plan and supports.
  • Build the new electrical connections and plumbing to code.
  • Incorporate the existing foundation for better stability and reduced settling.
  • Register the addition with your county according to local regulations.

A reliable home addition contractor can make sure your new addition is safe. They can also ensure the construction goes smoothly from start to finish. Enter your zip code and HomeAdvisor will connect you with prescreened home addition contractors near you.