General Contractor in Gunbarrel, Colorado

Reworking a single-story office or light industrial building into space that a new user can run is the core of what we do in Gunbarrel. Gunbarrel is an unincorporated community of 9,554 residents (2020 census) at 5,282 feet, with an industrial and office district along Spine Road and Lookout Road. Most of what we are asked to build there is a fit-out, an expansion or a conversion of an existing building, and the first thing we look at is the floor, the loading and the electrical service.

Flooding is Gunbarrel's principal natural hazard, and any serious plan for a building there starts with water: where it enters the site, where it leaves and how high the finished floor sits relative to both. We do that review before pricing, and we do it in plain terms so an owner or tenant can see what it means for cost, insurance and the schedule. Lenders and insurers ask the same questions, and a written answer from the builder saves time with both.

The aim is a building that works for the next user and stays dry for the one after.

Conversions that need a real floor and real power

A common Gunbarrel request is to turn office space into something that carries equipment: a light manufacturing line, a lab-style bench room, a food-products packing area or a test shop. Each of those needs a stronger floor, better electrical service and different air handling than an office. Our flex and light industrial construction work begins with a floor survey and a load calculation, then moves to the slab, the service upgrade and the mechanical changes.

Where a user wants trucks, we add or revise docks and aprons. The trade partners for truck court and dock apron pour reinforced concrete sized for the loaded vehicles that will use it, with falls set so water drains away from the building rather than toward it.

A district with several kinds of building

An April 2016 BizWest article reported that a technology company sold four Gunbarrel parcels for $5.4 million, including a 51,082 square foot single-story building at 6150 Lookout Road and vacant parcels on Spine Road zoned general industrial. The same article noted a food-products distribution building at the northeast corner of 63rd Street and Spine Road, and a building at 6060 Spine Road that was occupied by a tenant at the time. The article is from 2016, so ownership and availability have likely changed, and we treat it only as evidence of the building types that exist here.

Those types are what you would expect from a business park: mid-sized single-story office and flex, with room for vacant general industrial parcels. A tenant who needs flexible space often finds that the existing buildings are close but not quite right, and that is where flex and light industrial buildings built or reworked to the tenant's needs come in. We would rather tell you early which of the two you need than discover it after a lease is signed.

Designing for flooding

Because flooding is the area's principal natural hazard, we ask about drainage first. We check floodplain mapping, look at how nearby ditches and creeks connect, and compare the finished floor to the surrounding grade. On new construction we usually raise the slab and design grading that carries water around the building. For existing buildings, we look at doors, dock pits and below-grade utilities, which are the points where water enters.

The trade partners for mass grading and drainage handle the earthwork, and we coordinate with the civil engineer on detention. If equipment in the building is sensitive to water, we raise it above the floor on pads or on a second level.

Special district, special costs

Residents formed the Gunbarrel General Improvement District in 1993, now called the Gunbarrel Public Improvement District, a special district that can levy taxes and incur debt. For an owner, a special district can mean an additional charge or a source of local infrastructure, and we ask about it when we assemble a project budget. It is not a construction cost, but it belongs in the same conversation as utilities and impact fees.

The main construction cost drivers are the slab, the electrical service and the mechanical systems. We carry unit prices for each, and we show owners where an alternative, such as a smaller electrical upgrade or a different floor system, could reduce the budget without hurting the use. Sometimes a tenant improvement approach is enough, and sometimes only a deeper rebuild will do.

Who works in the district

The users we meet in Gunbarrel are small and mid-size manufacturers, product developers, food-products companies and service firms. Many are growing out of a first space and want a building that can handle the next step in equipment and headcount without a move.

Because Boulder and Niwot are close, we often compare Gunbarrel sites with options in those places. We lay out rent or ownership, build-out cost and permit time side by side so the choice is clear.

Start with the floor and the water

Tell us the building or parcel, the equipment and the date. We will walk it, check the floor, power and drainage, and give you a conversion cost and schedule.

Questions Owners Ask

How do you assess flooding risk on a Gunbarrel site?

We start with the floodplain map and the site's grading, then look at how water would reach doors, dock pits and utilities. Flooding is Gunbarrel's principal natural hazard according to our source, so we treat it as a design condition. Findings go into the budget as a line item, such as a raised slab or added drainage.

Can an office building become a light manufacturing space?

Usually, if the floor, power and ventilation can be upgraded at reasonable cost. We begin with a floor survey and electrical review, then price slab work, service upgrades and mechanical changes separately. That tells you whether the conversion beats a new building.

What is the Gunbarrel Public Improvement District?

It is a special district that residents formed in 1993 as a General Improvement District, now called the Gunbarrel Public Improvement District, and it can levy taxes and incur debt. We do not administer it, but we ask owners about district charges when preparing a budget.

Are the 2016 parcel sales still relevant?

Only as a clue to the building types in the district. The 2016 article is old, and ownership and availability have likely changed. We recommend that a buyer verify current status through a broker or the county records.

Which agency permits work in Gunbarrel?

Gunbarrel is unincorporated, so Boulder County generally handles permits. The county lists code amendments to the 2021 International Building Code for unincorporated land effective July 1, 2026. We confirm which applies to your submittal date.

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