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Interior Upgrades
Fast, reliable home improvements in Lynden, Everson, Sumas, Nooksack, and all of Whatcom County.
Exterior Projects
Expert siding, painting, and window replacement across Whatcom County and surrounding areas.
Repairs & Installations
24/7 service for repairs, water heaters, and more in Ferndale, Lynden, and nearby areas.
Trusted Construction & Remodeling in Whatcom County for Homes & Businesses
With over 20 years of construction and remodeling experience in Lynden, Everson, Sumas, Nooksack, and Ferndale, our licensed and insured team delivers professional, dependable service. From interior upgrades to exterior projects, we keep your home looking modern, durable, and beautiful—day or night.
20+
Years of service
500+
Projects completed
100%
Local, family-owned business
5 ★
Rated on Google by local customers
Why Whatcom County Chooses Alpha Cornerstone
We are committed to deliver great service
Serving Lynden, Everson, Sumas, Nooksack, Ferndale, and nearby areas, we pride ourselves on dependable construction and remodeling solutions you can trust. We never cut corners—using only quality materials and proven techniques to deliver lasting results.
Reliable, on-time service
Clear, upfront pricing
Thorough follow-up after every project
Industry best practices for lasting craftsmanship
Your questions, answered
Answers to the most common questions our customers have. If you don’t find the information you’re looking for, feel free to contact us.
What our customers say
Our Whatcom County customers are at the heart of everything we do. We listen to your needs and tailor our services to deliver results you’ll love.
Latest blog posts
Our construction blog shares tips, how-tos, and expert advice to help homeowners and businesses in Whatcom County keep their homes modern, durable, and beautiful.
