K&C
Koa & Concrete
Honolulu · Licensed & insured · 4.9★ rated

Renovations homeowners actually recommend.

Family-run crew serving Oahu for 14 years. Real photos of real jobs below — not stock images.

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★★★★★

"They finished our kitchen two days early and left the place spotless. Communication was great the whole way through."

— Lani K., Kailua
What we build

Kitchens

Full gut renovations and layout redesigns.

Bathrooms

Walk-in showers, tile, accessibility upgrades.

Additions

Ohana units, lanai enclosures, second stories.

Exteriors

Decking, siding, and storm-rated roofing.

Before & after
Kitchen — before, Kailua
Kitchen — after, Kailua
Bath — before, Manoa
Bath — after, Manoa
Why homeowners choose us

Fixed-price bids

No change-order surprises once work begins.

One crew, start to finish

The team that bids the job is the team that builds it.

2-year workmanship warranty

Covers labor on every project we complete.

Recent reviews
★★★★★

"Punctual, tidy, and the tile work is flawless."

— Mark T.
★★★★★

"Best bid of three contractors and the only one who showed up on time to quote it."

— Jenna O.
★★★★★

"Our ohana addition passed inspection on the first try."

— David P.
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