Find the Top 24 Tenant Improvement Contractors in Seattle, WA
Seattle SDCI permits take 6-10 weeks (Design Review adds 8-16 weeks). Top contractors book 4-6 months out. High-rises require union labor—adds 45% to costs. LEED certification almost mandatory.
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Seattle: Long Permits, Union Costs, LEED Requirements
SDCI permitting takes 6-10 weeks minimum. Design Review (required for most commercial projects) adds 8-16 weeks—plan for 4-6 months total. Quality contractors book 4-6 months out; South Lake Union tech specialists book 6+ months ahead. Costs: $53-$93/sqft.
Critical factors:
- South Lake Union/Capitol Hill: Tech office specialists who handle LEED requirements, complex data infrastructure, open-layout acoustics. Union labor largely required (45% premium).
- Pioneer Square Historic: Seismic retrofit specialists who know URM regulations. Expect structural engineer involvement, longer timelines (permits can hit 8-12 months).
- Eastside (Bellevue): Faster permits (4-6 weeks), less union presence, better contractor availability. Consider if timeline critical.
LEED certification almost mandatory for tech tenants (budget consultant fees). Seismic requirements strict—older buildings need expensive upgrades. Rain (Oct-May) doesn't stop interior work but complicates logistics. Union market means higher costs but better standardization.
Why Seattle is Unique
Seattle Dept of Construction & Inspections (SDCI) takes 6-10 weeks for permits. Design Review Board (most projects) adds 8-16 weeks. Quality contractors book 4-6 months ahead—South Lake Union tech offices book 6+ months. Union presence strong (~60% of commercial market). LEED certification expected by most tech tenants.
Understanding Commercial Build-Out Costs in Seattle
Costs vary significantly based on finish level, building age, location, and scope of work. Here's what you can expect:
Basic Build-Out
Standard
Premium
Factors That Affect Your Budget
- Building Age: Older buildings may require electrical upgrades, asbestos abatement, or structural modifications
- Permit Requirements: Seattle permitting can add 4-8 weeks and $5,000-50,000+ depending on scope
- MEP Complexity: HVAC, electrical, and plumbing changes significantly impact cost
- Timeline Pressure: Accelerated schedules may require overtime and premium pricing
Soft Costs & Fees
- Architectural Fees: 5-15% of construction costs
- Engineering: Mechanical, Electrical, Plumbing (MEP) design
- Permit & Impact Fees: City-specific municipal charges
- Project Management: Optional oversight (3-5% of project)
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List of Tenant Improvement Contractors in Seattle
Browse 24 verified contractors serving Seattle. Filter by specialty, service type, or project size to find your perfect match.
Bayley Construction
✓ VerifiedSeattle office construction specialist handling large commercial building projects.
Braseth Construction
✓ VerifiedSeattle contractor excelling in preconstruction and complex commercial development projects.
CBRE Project Management
✓ VerifiedThe global leader in commercial real estate and project delivery.
Cushman & Wakefield
✓ VerifiedGlobal real estate services firm delivering integrated project & development services.
Hammer & Hand
✓ VerifiedSeattle design-driven contractor specializing in high-performance commercial construction.
Makswell Construction
✓ VerifiedGreater Seattle remodeling focused on enhancing experience and reflecting brand identity.
MRJ Constructors
✓ VerifiedSeattle office building specialist handling complex construction with various materials.
Skyline Construction
✓ VerifiedPuget Sound region TI specialist transforming spaces since 1953 for tech, finance, and healthcare.
Turner Construction
✓ VerifiedNorth America's largest general builder, known for the Wilshire Grand and SoFi Stadium.
United Seattle
✓ VerifiedSeattle interior and exterior specialist providing end-to-end commercial construction.
Vertical Construction Group
✓ VerifiedSeattle remodel specialist offering complete design and construction for TI projects.
Wilcox Construction
✓ VerifiedSeattle commercial contractor with professional expertise in tenant improvements.
West Coast builder known for great retail and healthcare work.
70+ years Seattle reputation for functional, safe commercial spaces with contemporary methods.
One of Washington's largest contractors with innovative expertise since 1933.
Seattle TI specialist with strong public sector experience in institutional facilities.
30+ years designing and constructing Seattle commercial interiors with client-centered approach.
Seattle TI contractor delivering exceptional craftsmanship for commercial and retail spaces.
Seattle contractor with extensive history of office campus and complex building TI projects.
Specialized Seattle office contractor creating unique, tailored commercial environments.
Creating Class A Seattle office spaces with contemporary design and technological features.
Premier Seattle TI contractor creating functional, inspiring environments with quality and efficiency.
Established Seattle commercial contractor delivering quality TI and commercial projects.
Seattle specialist in ambitious downtown projects requiring high-quality fit and finish.
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