

4th Dimension Construction
Design-build remodeling and construction across Thurston County

Custom homes, ADUs and remodels built by a small local team120 State Ave NE #1050, Olympia, WA

Mallard Brothers Construction is a design-build general contractor that builds custom homes, accessory dwelling units (ADUs), and home remodels. The company describes its work as artisan carpentry, and its project list includes ADUs and garage conversions, additions, kitchen and bathroom remodels, and a heated accessory structure. In 2026 it received a Remodeling Excellence (REX) Award from Olympia Master Builders in the addition over $250,000 category.
The team is small and works with a network of local tradespeople and vendors. Free estimates and free consultations are offered, and the company focuses on eco-friendly, energy-code-compliant building. The office is at 120 State Ave NE in Olympia, and the company serves Olympia and surrounding areas.


Design-build remodeling and construction across Thurston County


Residential construction, remodeling and design-build
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