Suggest a firm

Home addition contractors in Kansas City

The 3 home addition contractors from Google's results for Kansas City, Missouri, ordered by Google rating weighted by review count. No firm pays to be listed or ranked.

Last updated

Bump-out
$24,500 – $58,000small single-room extension
Room addition
$77,500 – $194,000ground floor, finished
Second-story addition
$145,500 – $388,000whole or partial floor
Kansas City vs US
-3%around the US median

Licensing in Missouri. Missouri has no statewide license for general contractors. Kansas City and St. Louis license contractors locally.

All Proserviceskc

4.9(237)on GoogleOlathe, KS

All-Pro Renovations handles kitchen, bathroom and basement remodels as well as full home renovations in the Kansas City area, working out of Olathe, KS. The company also builds home additions for households that need more living space.

(913) 354-2380 465 S Parker St Suit 103, Olathe, KS 66061

Visit website

Thrive Renovation

4.8(59)on GoogleParkville, MO

Thrive Renovation works out of Parkville and serves the Kansas City area with residential and commercial remodeling, including basement remodels. Deck building and roofing round out its services, and it also takes on home additions.

(816) 631-5005 7080 Ensign Dr Unit J, Parkville, MO 64152

Visit website

Room Additions in Spring Hill

4.8(19)on GoogleKansas City

Allen Building Specialties designs and builds room additions for houses in Spring Hill and around Kansas City, from second-story additions to sunrooms. The team matches the existing rooflines, materials and finishes so the new space blends with the original house.

(913) 732-3036

Visit website

What home addition contractors charge in Kansas City

In Kansas City, a bump-out typically costs $24,500 – $58,000. Remodeling labor in Kansas City runs about 3% below the US median, which accounts for most of the difference from the same project elsewhere.

How to choose between them

  • Check the license yourself. Where Missouri or Kansas City licenses this work, the licensing board's own lookup confirms a license number in a minute. Do it before you sign, not after.
  • Get three bids on the same scope. Written down, split into labor, materials, allowances and anything structural. Most people compare a total against a total and end up choosing between two different projects.
  • Ask what is not included. Permits, debris removal, fixture and finish allowances, and repairs after demolition are the four that turn a cheap bid into an average one.
  • Never pay a large deposit up front. A deposit to order materials and hold a start date is normal. Half the total before anyone shows up is not.

How this list is ordered

These are the firms from Google's results for "home additions kansas city mo", with directories, chains and suppliers removed. They are ordered by Google rating weighted by review count, and the ratings shown are Google's. No firm pays to be listed or ranked. The list was last updated in October 2026.

Home addition contractors in Kansas City: common questions

Do I need an architect for a home addition?

Usually yes, or a design-build firm with in-house design. Additions need stamped structural drawings for the permit in most places, and zoning review on setbacks, height and lot coverage.