Commercial Construction & Tenant Improvements in Seattle & the Puget Sound
From office build-outs to municipal facility renovations, Kolmo Construction delivers quality commercial work on time and on budget. WA State SEDBE-certified and King County SCS-certified small contractor serving public agencies, businesses, and institutions across the greater Seattle area and Washington State.
Our Commercial Construction Services in Seattle
We provide comprehensive commercial construction and renovation services tailored to the unique needs of your business. Serving Seattle, Bellevue, and the greater Puget Sound area.
Office Build-Outs & Tenant Improvements
OfficeFull-scope office renovations and tenant improvements for Seattle businesses — open-plan conversions, private offices, ADA upgrades, and more.
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ADA Compliance & Accessibility Upgrades
OfficeBring your commercial space into full ADA and Washington State accessibility compliance. Ramps, restrooms, door hardware, signage, and more.
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Retail Space Construction & Fit-Out
RetailCustom retail construction from shell to grand opening — storefronts, display systems, checkout counters, lighting design, and brand-specific finishes.
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Industrial Facility Renovations
IndustrialWarehouse upgrades, loading dock improvements, heavy-duty flooring, industrial HVAC, and safety compliance work for King, Pierce, and Snohomish County facilities.
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Restaurant & Commercial Kitchen Renovations
HospitalityHealth department-compliant restaurant renovations, commercial kitchen installations, bar build-outs, and dining room remodels for Seattle hospitality businesses.
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Municipal & Government Facility Renovations
PublicPublic works renovations for city offices, fire stations, community centers, and government facilities. Prevailing wage certified. King County SCS #7259.
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School & Educational Facility Improvements
PublicClassroom renovations, restroom upgrades, accessibility improvements, and summer construction work for K-12 schools and colleges. Prevailing wage certified.
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Parks, Recreation & Public Space Construction
PublicRestroom facilities, shelter construction, ADA trail improvements, and recreation building renovations for parks departments and public agencies.
Request QuoteWhy Choose Kolmo for Your Commercial Project in Seattle
Kolmo Construction is a licensed and insured commercial construction company built around the realities of business environments in Seattle and across Washington state — fixed proposals, tight scheduling, and renovations planned around your operating hours. Our process is designed to keep your business running while the work gets done.
Minimal Business Disruption
We work efficiently to minimize downtime for your business operations.
On-Time Completion
We understand that time is money and adhere strictly to project timelines.
Experienced Team
Our team has extensive experience with commercial projects of all sizes.
Comprehensive Commercial Construction Services
Office Build-Outs & Tenant Improvements
Our team specializes in complete office renovations and tenant improvements throughout Seattle. We handle everything from open-floor plan conversions to private office configurations, conference room installations, break room upgrades, and ADA-compliant accessibility improvements. Our licensed contractors work efficiently to minimize disruption to your business operations while delivering high-quality results on schedule.
Retail Space Construction
Transform your retail environment with our expert construction services. We understand the unique demands of retail spaces, including storefront design, display area optimization, checkout counter installation, lighting design for product visibility, and creating inviting customer experiences. Our team works with retail business owners across Seattle to create spaces that drive sales and enhance brand identity.
Industrial Facilities & Warehouses
Kolmo Construction provides comprehensive industrial facility renovations including warehouse optimizations, loading dock improvements, industrial HVAC installations, heavy-duty flooring, and safety compliance upgrades. We understand the technical requirements and building codes specific to industrial environments in Washington state, ensuring your facility meets all safety and operational standards.
Hospitality & Restaurant Renovations
Our hospitality construction services cover restaurants, hotels, and entertainment venues. We handle commercial kitchen installations, dining area remodels, bar construction, health code compliance, and creating memorable guest experiences. With extensive experience in the Seattle hospitality industry, we navigate the complex permitting and health department requirements while delivering beautiful, functional spaces.
Our Service Area
Kolmo Construction proudly serves commercial clients throughout:
- Seattle and Greater Seattle Metropolitan Area
- Bellevue, Kirkland, and Eastside Communities
- Tacoma and South Sound Region
- Everett and North King County
- All of King, Pierce, and Snohomish Counties
Public Works & Government Contracts
Kolmo Construction is a qualified small contractor for public works projects in Washington State. Whether you're a city, county, school district, housing authority, or port — we're set up to work with your procurement process.
Our Qualifications
- King County SCS Certified — #7259
Small Contractor & Supplier certification qualifying us for King County, Port of Seattle, Sound Transit, and Seattle Colleges contracts.
- WA State Licensed, Bonded & Insured
License KOLMOL*753JS. Comprehensive general liability and workers' compensation coverage meeting public agency requirements.
- Prevailing Wage Compliant
All public works projects are executed under WA State L&I prevailing wage rates with certified payroll reporting.
- MRSC Small Works Roster Eligible
Agencies can solicit us directly for projects under $350,000 without full competitive bid — streamlining your procurement.
How Public Agencies Work With Us
Limited Public Works (Under $75K)
Simplified process — agencies can solicit quotes from a small group of contractors. Contact us directly to get on your agency's list.
Small Works Roster (Under $350K)
Add Kolmo to your MRSC roster or agency-specific small works roster. We respond promptly to all solicitations and provide detailed bids.
Formal Competitive Bid
We respond to ITBs and RFPs for larger public projects. We provide complete bid packages with bonding, insurance certificates, and prevailing wage intent.
Ready to Add Us to Your Roster?
Contact us and we'll provide all required documentation — license, bond, insurance, prevailing wage registration — within 24 hours.
Commercial Construction & Tenant Improvement Costs in the Puget Sound
Budgeting a commercial remodel starts with knowing which range you're in. The figures below are typical 2026 planning ranges for commercial construction and remodeling across the Puget Sound — they vary widely with shell condition, scope, and finish level, and they are planning figures, not quotes.
Office Tenant Improvements & Office Remodeling
$50 – $150 / sq ft
Typical planning range for standard commercial office remodeling. Light cosmetic refreshes — paint, carpet, lighting — can come in below this range, while full-gut renovations and high-spec buildouts commonly run $150–$250+ per square foot.
Retail Buildouts
$50 – $200 / sq ft
Typical planning range where shell condition is the swing factor: second-generation space with HVAC and restrooms in place lands near the low end, while a cold dark shell — no ceilings, minimal utilities — pushes toward the high end.
Restaurant & Food Service
$150 – $500+ / sq ft
Typical planning range for full restaurant buildouts. Commercial kitchens, hood and fire-suppression systems, grease interceptors, and health department requirements make food service the most expensive tenant improvement category per square foot.
Light Industrial & Warehouse
$20 – $100 / sq ft
Typical planning range for warehouse and light-industrial improvements. Open warehouse work — lighting, demising walls, dock upgrades, flooring — sits at the low end; conditioned office inserts and code-driven upgrades push toward the high end.
The same 3,000 sq ft suite can price very differently depending on what's above the ceiling and behind the walls. For a first-pass number, try our project cost calculator; for a real one, contact us to schedule a scoped walkthrough.
Commercial Permits in Seattle & King County
Most commercial tenant improvements follow a predictable permit path: a building permit (with plan review for anything beyond cosmetic work), separate trade permits for electrical, plumbing, and mechanical, and — for restaurants and food service — plan review with Public Health – Seattle & King County. If your project changes how the space is used, expect a change-of-use review and possibly upgrades to exiting, accessibility, or fire systems tied to the new occupancy.
Review timelines are the part owners underestimate. A simple TI with no change of use can clear review in a few weeks, while change-of-use, structural, or food-service projects routinely take two to four months in Seattle. As a tenant improvement contractor working regularly in Seattle, Bellevue, and Kirkland, we start permitting the moment the proposal is signed — so plan review runs in parallel with procurement instead of blocking the schedule.
Our permit research center covers requirements, fees, and timelines by city — start with the permit guides overview, or jump straight to Seattle, Bellevue, or Kirkland.
How a Commercial Project Runs
Walkthrough & scope
We visit the space, document existing conditions, and get specific about constraints: business hours, noise limits, freight access, and what absolutely can't go offline.
Fixed proposal
You get a line-item scope, a schedule, and a fixed price — with long-lead materials and allowances flagged up front. Browse recent work in our project portfolio.
Permits & approvals
We prepare and submit the permit package and manage plan review comments, so permitting runs in parallel with procurement instead of blocking the start date.
Construction, planned around your business
Phased work, dust and noise containment, and after-hours scheduling where needed — the goal is that your customers and staff barely notice until the reveal.
Punch list & closeout
Final inspections, punch list completion, O&M documentation, and lien releases — closed out completely, not 95% done.
Warranty
Workmanship warranty with responsive follow-up. If something isn't right after move-in, we come back and fix it.
Licensed trade partners who want to work on Kolmo commercial projects can join our subcontractor network.
Commercial Construction FAQs
How much does an office tenant improvement cost per square foot in Seattle?
Most office tenant improvements in Seattle land in a typical planning range of roughly $50–$150 per square foot, with light cosmetic refreshes coming in below that and full-gut or high-spec buildouts running $150–$250+ per square foot. Shell condition, mechanical and electrical scope, and finish level drive most of the variance. These are planning figures, not quotes — a walkthrough is what turns them into a scoped number.
How long does a commercial tenant improvement or remodel take?
A straightforward office or retail tenant improvement typically runs 6–12 weeks of construction once permits are issued. Restaurant buildouts and projects involving structural work, change of use, or health department review commonly take 3–6 months end to end, including permitting. We publish a schedule with every fixed proposal and flag long-lead items early.
Do you handle commercial construction permits?
Yes. We manage the building permit, the trade permits (electrical, plumbing, mechanical), and — for food service — health department plan review, from application through final inspection. Our in-house permit research covers Seattle, Bellevue, Kirkland, and the other King County jurisdictions we work in.
Can you work in an occupied space or after hours?
Yes — much of our commercial work happens in occupied buildings. We phase the work, contain dust and noise, and schedule loud or disruptive tasks for evenings and weekends when a business needs to stay open. After-hours and phased-occupancy plans are built into the proposal rather than added later.
Is there a minimum project size for commercial work?
No hard minimum. We take on everything from single-suite refreshes and repair scopes up to full-floor tenant improvements and multi-space renovations, and smaller scopes are often scheduled between larger projects. If you're unsure whether a project is a fit, a short call usually settles it.
What areas do you serve for commercial construction?
We serve the greater Seattle area and the broader Puget Sound region — including Seattle, Bellevue, Kirkland, Redmond, Renton, Tacoma, and Everett — covering King, Pierce, and Snohomish counties. Our office is at 4018 NE 125th St in Seattle.
Do you take on public works and prevailing wage projects?
Yes. Kolmo Construction is a Washington public works contractor — WA State SEDBE certified, King County SCS certified (#7259), and eligible for MRSC small works rosters. All public projects are performed at L&I prevailing wage rates with certified payroll reporting.
Do you work with property managers and landlords?
Yes — we regularly work with property managers, landlords, and commercial brokers on tenant improvements, make-ready and white-box work, and portfolio repairs. We provide certificates of insurance and vendor onboarding paperwork quickly, and we keep managers informed without being chased.
Ready to Transform Your Commercial Space?
Contact us today to discuss your project requirements and receive a detailed quote. Our licensed and insured team is ready to deliver exceptional commercial construction services across Seattle and Washington state.
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