Industrial Tenant Improvements for Denver Warehouse and Plant Leases

Tenants in a market with only 2.4 percent vacancy do not get to wait on a contractor. Westminster's 2024 economic profile, citing CoStar data from September 2023, put its industrial and flex inventory at 3,582,581 rentable square feet with that vacancy rate. When a space finally opens, the lease clock starts, rent begins, and the tenant needs the building working for its operation quickly.

We build industrial tenant improvements for companies leasing warehouse, flex and light production space across the Denver metro. The work ranges from a clean interior with a new office and restrooms to a heavier conversion: added dock doors, increased electrical service, compressed air, floor drains, sprinkler modifications, racking-ready slab repairs and refrigerated rooms.

The landlord's shell is rarely what the tenant's process needs. Our job is to find the gap between the two before the lease is signed, price it honestly, and deliver the space by the date that matters.

Leasing Realities in the North and Central Metro

Space in the Adams County corridor from Commerce City through Thornton and Northglenn moves quickly, and the buildings often carry rail access, truck courts and interstate frontage that tenants cannot replicate elsewhere. Owners usually offer a TI allowance, but the allowance rarely covers a real process fit-out, and tenants end up funding the difference.

We help tenants evaluate a building during lease negotiation. We walk it, check clear height, column spacing, slab condition, dock count, power capacity and fire protection design, and give a rough scope and price. That lets you negotiate the allowance, the free-rent period and the landlord's work on the basis of facts. Many of our tenants lease in Commerce City or Northglenn, where older building stock meets newer distribution product.

Building to a Lease Commencement Date

We begin with the permit path, because it is the schedule's biggest risk. A tenant improvement permit can move faster than a new-building permit, but only when drawings are complete and the plan reviewer sees no unresolved life safety questions. We prepare the submittal with the architect, respond to comments in days rather than weeks, and order long-lead items such as switchgear, dock equipment and overhead doors on the day we have a signed scope.

Field work runs in a fixed order: demolition and slab cuts, underground utilities, framing, rough-in, fire protection changes, ceilings and finishes, dock and equipment work, then inspections. We run trades in parallel wherever the building allows, and we publish a lookahead schedule weekly. Because we also build ground-up work, we understand which items hold the critical path and will tell you early when an equipment lead time threatens your move-in date, as our long-lead procurement process is designed to do.

What Industrial Tenants Usually Ask For

Typical scope includes demising walls, new offices and restrooms, sprinkler heads and piping changes for a new commodity classification, upgraded lighting, new overhead or dock doors, levelers, trailer restraints, and electrical service increases with panels and distribution. Some tenants add compressed air, process water, floor trenching, mezzanines, or cold rooms.

Floors deserve a close look. A slab that is flat enough for a counterbalance truck may not meet the flatness a narrow-aisle system requires, and joints that have deteriorated will damage wheels. We grind, patch and fill joints, and where racking will load the floor heavily we verify capacity. For temperature-controlled space, our refrigerated dock retrofit work handles insulated panels, vestibules and dock seals.

Where a Tenant Improvement Budget Goes

Electrical service and fire protection are the two line items that surprise tenants most. A landlord's building may have 400 amps where the tenant's equipment needs 2,000, which means new utility service, transformer pads, switchgear and a long utility lead time. Sprinkler systems designed for light storage may need upgrading for high-piled combustibles, and that can mean a larger water service and a fire pump.

Below those items sit the predictable costs: framing, finishes, doors and dock equipment. We show unit prices, mark allowances and flag every item that depends on the landlord, such as roof penetrations and structural alterations, so the budget you take to your finance team is the budget you will actually spend.

Which Code Applies in Which City

Tenant improvements follow the code edition of the city or county where the building sits, and in the metro that varies. Commerce City is listed by the Home Builders Association of Metro Denver on the 2021 I-codes with no plans to adopt the 2024 edition and an update expected in the 2027 cycle. Thornton, by contrast, is shown as enforcing the 2024 IBC, IRC and IFC with the 2023 NEC, implemented July 6, 2025.

A tenant moving between those cities can therefore face different egress, sprinkler and energy requirements for a nearly identical scope. We pull the adopted editions, check for local amendments, and tell you before lease signing if an adopted provision changes the cost of your plan.

Related Work Tenants Often Combine

Many tenants pair the improvement with an industrial office buildout and with small-bay condo suites when a company owns its space rather than leasing it. Tenants running e-commerce operations may also be interested in fulfillment-center work that adds conveyor, mezzanine and charging infrastructure.

Get a Tenant Improvement Scope Before You Sign

Send us the lease space, the plan and your operating requirements. We will walk the building, identify what the landlord's shell lacks and give you a price and schedule to negotiate against.

Common Questions

Can you review a building before we sign the lease?

Yes, and we recommend it. We check clear height, slab, dock count, power capacity and sprinkler design against your operation, then give you a rough scope and price. That information helps you negotiate the allowance, the landlord's work and the delivery date before you are committed.

Who pays for upgrades to the electrical service?

It depends on the lease. Some landlords include service upgrades in their work, others treat them as tenant costs against the allowance. Utility upgrades can also have long lead times, so we ask the utility early and put the cost and timeline in writing before the lease is final.

How long does a typical industrial TI take?

A light buildout with offices and restrooms is a matter of weeks of field work once permits are in hand. A heavier project with new power, dock doors, slab work and cold rooms takes longer, and equipment lead times often govern. We give a schedule built from actual vendor lead times, not generic ranges.

Do we need a permit for racking?

Often yes, especially for tall or high-piled storage, because racking affects fire protection and structural loading. The local fire and building departments decide what triggers a permit, and sprinkler design may need to be revised. We confirm requirements for your commodity and rack height before racking is ordered.

What happens to the improvements when the lease ends?

The lease governs restoration. Dock doors, offices and electrical upgrades are often left in place, while specialized equipment is removed. We note these obligations in the scope so the exit cost is clear when you plan the project.

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