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Kolmo Construction

Medical & Dental Office Construction

Dental and medical office build-outs and remodels across Greater Seattle — operatory rough-in, imaging shielding, sterilization and lab casework, and ICRA-controlled work that keeps an occupied practice treating patients.

Kolmo Construction builds and remodels dental and medical offices and outpatient clinics across Seattle, Bellevue, Kirkland, Redmond, Renton and Kent. Kolmo is ASHE ICRA 2.0 certified — qualified to perform Infection Prevention Risk Assessment in the health care setting — and is a licensed Washington general contractor, registration KOLMOL*753JS.

Infection control is what separates a clinic remodel from an office one. Before work starts, Kolmo assesses the scope against the patients and procedures next to it and sets the containment that follows: sealed barriers at the zone boundary, negative air pressure with HEPA filtration so dust cannot migrate into operatories or waiting areas, tacky mats and dedicated routes for crew and debris, protected egress maintained throughout, and a cleaning protocol at each phase handover. The assessment is the contractor's job, not the practice's.

Dental and medical offices plan higher per square foot than general office space — roughly $150 to $350 in the Seattle market — because every operatory carries water, vacuum, air and drainage rough-in, imaging rooms may need lead shielding, and casework and sterilization areas are built to the equipment rather than to stock sizes. A cosmetic refresh of an existing practice sits well below that band. Construction typically runs 8 to 14 weeks once the permit is issued, and permitting commonly adds another 4 to 10 weeks depending on jurisdiction. Those are planning figures for budgeting, not quotes — a walkthrough with the equipment list is what turns them into a scoped fixed price.

Most of this work happens in buildings that stay open, which is how Kolmo runs its other commercial work: the City of Renton's 7th-floor city offices were delivered in August 2026 in an occupied municipal building without interrupting the floor's operations, and the adjacent police facility runs on a 7pm to 4am night shift with a background-checked crew. On a practice fit-out that same phasing is planned around treatment hours instead of office hours. Kolmo takes the equipment cut sheets before framing so rough-in, backing, circuits and data drops meet the chairs, imaging and sterilizers the practice has bought, and files the building, electrical, plumbing and mechanical permits and carries them to final inspection.

Licensed & certified in Washington

  • Washington State Contractor Registration — KOLMOL*753JS
  • WA State SEDBE (Small Economically Disadvantaged Business Enterprise) — D700031098
  • King County Small Contractor & Supplier (SCS) — 7259
  • WA Lead-Safe RRP Firm — R25-0269
Verify every credential independently

What this covers

  • ICRA 2.0 certified infection control
  • Containment barriers & negative-air HEPA filtration
  • Operatory water, vacuum, air & drainage rough-in
  • Imaging room lead shielding coordination
  • Sterilization & lab casework installation
  • Owner-supplied equipment coordination
  • Evening & weekend phasing around treatment hours
  • Building + trade permits filed and carried to final

How the work runs

  1. Walkthrough with the equipment list

    Kolmo walks the space with the equipment schedule in hand and records what the existing mechanical, electrical and plumbing actually deliver against what the operatories, imaging and sterilization area will need. The gap between the equipment a practice has ordered and the services already in the walls is where clinic budgets usually fail, so it is measured before anything is priced.

  2. Infection control risk assessment

    The scope is ranked against the patients and procedures next to it, and that ranking sets the containment class: barrier type, air pressure, filtration, crew and debris routes, and cleaning protocol. The assessment is written down and agreed with the practice before pricing, so what protects patients is part of the contract rather than a site decision made later.

  3. Scoped fixed proposal with schedule

    You receive a line-item scope, a construction schedule and a fixed price, with allowances and long-lead items called out separately rather than buried. Anything that can move the date — shielding, specialty casework, equipment delivery windows — is named in the proposal so the schedule risk is visible before signing rather than reported during construction.

  4. Permits and phased construction around treatment hours

    Kolmo files the building permit and the electrical, plumbing and mechanical trade permits and runs them to issue. Barriers and negative air go up before demolition, the practice keeps a protected route for patients and staff, and loud or dusty tasks are scheduled to evenings and weekends where a practice needs to keep treating. Progress is documented with dated photographs at each phase handover.

  5. Inspection, clean-down and closeout

    Every trade permit is carried through its final inspection. Containment comes down under the cleaning protocol rather than being torn out, surfaces are wiped down and the area is handed back ready for equipment installation. Closeout includes permit finals, warranties and as-built information for what was concealed, and punch items are worked to completion before the final invoice.

Medical & Dental Office Construction — common questions

Can a dental or medical office stay open during a remodel?

Yes, and that is the normal case. Kolmo is ASHE ICRA 2.0 certified — qualified to perform Infection Prevention Risk Assessment in the health care setting — so the work is planned around treatment rather than the other way around. That means sealed containment at the zone boundary, negative-air machines with HEPA filtration so nothing migrates into operatories or waiting areas, protected egress kept open, and demolition or anything loud moved to evenings and weekends. Kolmo works across Seattle, Bellevue, Kirkland, Redmond, Renton and Kent.

What is ICRA, and why does it matter for a clinic remodel?

ICRA stands for Infection Control Risk Assessment — the method health care facilities use to decide what precautions a construction project needs before it starts. It ranks the work by how much dust and disruption it creates against how vulnerable the patients nearby are, and that ranking sets the containment class: barriers, negative air pressure, HEPA filtration, sticky mats, dedicated routes and cleaning protocol. Kolmo holds the ASHE ICRA 2.0 certification (American Society for Health Care Engineering / AHA Education, valid to 11/13/2028), so the assessment is done by the contractor rather than left to the practice.

What does a medical or dental office build-out cost per square foot in Seattle?

Medical and dental offices plan higher than general office work — roughly $150–$350 per square foot in the Seattle market — because of the plumbing, vacuum and air lines at each operatory, lead shielding where imaging is installed, dedicated electrical circuits, and specialized casework. A cosmetic refresh of an existing practice sits well below that. These are planning ranges for budgeting, not quotes; a walkthrough with the equipment list is what turns them into a scoped fixed price.

Does Kolmo coordinate dental chairs, imaging and other owner-supplied equipment?

Yes. Operatory chairs, imaging units, sterilizers and cabinetry are usually bought by the practice from its own supplier, and the build has to meet them — rough-in locations for water, vacuum, air and drainage, backing in the walls, circuits and data drops, and shielding where the equipment requires it. Kolmo takes the equipment cut sheets before framing, coordinates the installer dates against the construction schedule, and carries the building, electrical, plumbing and mechanical permits through to final inspection.

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