Locally Based in Washougal, WA | Serving Southwest Washington

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Home additions in Washougal WA
Expert Remodeling Services

Home Additions in Washougal, WA

Gain the Extra Square Footage You Need Without Moving

Expand your living space and maximize your home’s equity with the premier home addition contractor serving Southwest Washington.

Expand Your Living Space and Property Value

When your family outgrows your current square footage, moving isn’t your only option. A custom, professionally constructed house extension provides the extra room you need while dramatically increasing your property’s long-term market value.

Amundson Construction specializes in seamless, structurally sound home additions in Washougal, WA. From initial blueprint planning alongside architectural teams to the final roofing shingles, we carefully design and build new spaces so they blend flawlessly with your property’s existing architectural style, roofline, foundation, and exterior siding.

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Comprehensive Solutions

Custom Home Addition Projects We Build

Luxury Master Suite Additions

Create a private residential oasis featuring a spacious bedroom layout, a custom walk-in closet, and a luxurious en-suite bathroom retreat.

Family Room & Living Space Expansions

Extend your current living room or main floor areas to build the ultimate open-concept gathering place for entertaining guests and family time.

New Bedrooms & Home Offices

Add much-needed secondary bedrooms to easily accommodate a growing family, frequent houseguests, or a dedicated, quiet workspace.

Sunrooms & Enclosed Patios

Enjoy natural Northwest light year-round with highly insulated, custom-built sunrooms and beautifully integrated patio enclosures.

Garage Additions & Conversions

Expand your physical garage space for extra vehicles, tool storage, and workspaces, or convert an underutilized existing garage into fully livable, heated square footage.

Second-Story Additions (Pop-Ups)

Maximize your existing property lot space by building vertically. Second-story structural additions are the perfect solution for doubling your home’s total footprint without sacrificing your yard.

In-Law Suites & Accessory Dwelling Units (ADUs)

Build functional, fully independent living spaces perfect for extended family, aging parents, or generating passive rental income with custom ADU construction.

Navigating Local Building Permits and Zoning Codes

Major structural additions require meticulous planning. As a fully licensed general contractor, we manage the entire municipal permitting process from start to finish. We work hand-in-hand with engineering teams and local building departments across the city of Washougal, Clark County, and Skamania County to ensure your new home addition project strictly complies with all regional setbacks, zoning restrictions, framing requirements, and code inspections.

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Ready to Transform Your Current Property?

Contact Amundson Construction today to schedule an on-site consultation and discuss your custom home extension project in Washougal, Camas, or the surrounding Southwest Washington areas.