Keystone Construction LLC

What They Do

Water Damage

• Bathroom Remodeling
• Walk-In Shower Conversion
• Master Bath Remodeling
• Tile Installation
• Fixture Upgrades
• Kitchen Remodeling
• Cabinet Installation
• Countertop Installation
• Backsplash Installation
• Water Damage Mitigation
• Moisture Remediation
• Water Damage Restoration

In Their Own Words

Bathroom remodeling is the core of what Keystone Construction LLC does, serving Seattle, Bellevue, Kirkland, and Renton. From walk-in showers to full primary bath transformations, our owner-operated crew manages every project from start to finish. We also handle kitchen remodels and hold water damage mitigation certification, allowing us to manage restoration and rebuild as one seamless process. This ensures total accountability, no unmanaged handoffs.

Written by the business on its public profile. We have not verified these claims.

Before You Call Keystone Construction LLC

1. Do you take moisture readings every day and will you give me the drying log?
2. Are your technicians certified in water damage restoration?

Ask for the company’s contractor registration number and look it up with the Washington State Department of Labor and Industries. Also ask for proof of insurance and industry certification for the technicians.

They list no storefront. Ask where the business is based and whether the crew is their own.

How Their Reviews Break Down

Counts from public listings as of September 23, 2026. A handful of reviews says less than a few hundred.

Read This While You Wait

• DIY with careWhat to Do in the First 24 Hours After Water DamageAn hour by hour plan for the first day after water damage. Make it safe, stop the source, document, remove water and start drying before mold can start.
• DIY friendlyWasher, Dishwasher, Fridge and Toilet Supply Line LeaksHow washer hoses, dishwasher lines, ice maker tubing and toilet supply lines fail, how to clean up each kind of leak, and how to replace a line yourself.