Our Commitment
NNAC is committed to providing reliable insight to every job, ensuring that all completed projects will have a positive impact, improving on the functions, environment, and image of our customer’s facilities. We will be your trusted partner by bringing our experienced project understanding to meet your construction needs.
Services & Qualifications
NNAC performs with top level project management and customer service while keeping a “safety first” approach.
- General Construction
- Construction Management
- Remote Site Construction
- Heavy Civil
- Design/Build
- Architectural & Structural Renovations & Upgrades
- Self-Performed Work
- LEED AP Staff
- Safety First Commitment
Trusted By



















What's New
Farallon Island Roof Replacement
Location: Farallon Island, CACompletion Date: 10/10/2024Customer: US Fish and Wildlife ServiceContract Amount: $651,129 Description of work: Reroof two houses located 30 miles offshore from the mainland. We removed two layers of shingles, new plywood decking, installed roof ventilation, removed and replaced gutters, removed old attic insulation and replaced it wil blow-in cellulose. All materials to

Naval Station Everett Building 2202 – 2nd Floor Addition
Location: Everett, WACompletion Date: 01/01/2020 Customer: NAVFACContract Amount: $3,714,869 Naval Station Everett Building 2202 2nd Floor Addition project is wrapping up 3-months ahead of schedule and earned NNAC the highest CPARS rating of exceptional across the board for Quality, Schedule, Safety & Management!This was $3.7M complex Design-Build project to add a 2nd floor for administrative space for PSNS

Urban Air Trampoline Park
Location: Killeen, TexasCompletion Date: August 2018Customer: Private SectorContract Amount: $2,417,995Project: Urban Air Trampoline & Adventure Park We had the pleasure of building from the ground up, one of the nation’s premier Indoor Trampoline & Adventure Parks, Urban Air. Its an award-winning wall-to-wall trampoline arenas, performance trampolines, dodgeball courts, drop zone, slam dunk tracks, trampoline runway, and an area for
What People Say
The variety of construction services provided by Mrs. Lettau’s company has been exemplary, consistently on time, and within budget, always going beyond our expectations. I commend their dedication and commitment to providing quality construction services to the US Army at Fort Hood.”
Mario Gonzalez | Contracting Officer, U.S. Army
NNAC’s performance met and exceeded contractual requirements. Work was performed quickly and correctly, allowing for Government to bring new transformer online 6 weeks earlier than estimated. NNAC is one of our “go to” contractor’s and I highly recommend them to any government agency.
Alex Wingert | Contracting Officer, NAVFAC NW