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Kosmos Construction LLCGeneral contractor in Renton, WA

Kosmos Construction LLC is a general contractor in Renton, WA, rated 5.0 from 11 Google reviews. Open Monday to Saturday.

Renton, WA0 paid placements in any rankingHow we rank

Call (206) 474-9696Website ↗

Key facts

Key facts about Kosmos Construction LLC
Phone(206) 474-9696
Websitekosmosconstructionllc.com
HoursOpen Monday to Saturday
Google rating5.0 from 11 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • General Contractingmain tradeGoogle main category

Service area

Serves Renton and 11 towns within 25 miles: Mercer Island, Seattle, Bellevue, White Center, Bryn Mawr-Skyway, Newcastle, Boulevard Park, Riverton, Tukwila, Kirkland and West Lake Sammamish.

Based in Renton, WAView on map

Opening hours

Opening hours for Kosmos Construction LLC
DayHours
Monday8:30 AM – 5 PM
Tuesday9 AM – 5 PM
Wednesday8:30 AM – 5 PM
Thursday8:30 AM – 5 PM
Friday8:30 AM – 5 PM
Saturday9 AM – 5 PM
SundayClosed
  • Open evenings — no
  • Open Saturdays
  • Open Sundays — no

Typical general contracting prices

Typical general contracting prices
JobLowTypicalHigh
Kitchen remodelPer project: typical range of customer-reported remodels (about $75 to $250 per sq ft). US national range × 1.04 Pacific factor (2025 Cost vs. Value Report)$15,240$28,190$43,470
Bathroom remodelPer bathroom: typical range of customer-reported remodels. US national range × 1.06 Pacific factor (2025 Cost vs. Value Report)$7,050$12,880$18,720

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

5.0from 11 Google reviews

Hired Kosmos Construction LLC? Write a review

Questions about Kosmos Construction LLC

What are Kosmos Construction LLC’s hours?

Kosmos Construction LLC is open Monday to Saturday. Its listed hours are Open Monday to Saturday. On Saturdays it is open 9 AM to 5 PM and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Kosmos Construction LLC serve?

Serves Renton and 11 towns within 25 miles: Mercer Island, Seattle, Bellevue, White Center, Bryn Mawr-Skyway, Newcastle, Boulevard Park, Riverton, Tukwila, Kirkland and West Lake Sammamish. The list is based on the business's location and the usual service radius for general contracting. Confirm your address is covered when you call.

What do Google reviews say about Kosmos Construction LLC?

Kosmos Construction LLC has a rating of 5.0 from 11 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact Kosmos Construction LLC?

Call Kosmos Construction LLC on (206) 474-9696. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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