General Contractor in Boulder, Colorado

Design review in Boulder starts before the drawings do. A building here is shaped by an all-electric energy code, a 35 foot height norm, a floodplain permit that reaches down to roof overhangs, and a creek that has shown what it can do in a wet September. We treat those conditions as inputs to the design and the budget, and we bring them into the room at the first meeting rather than the third resubmittal.

That is the work we do for owners who are building, renovating or fitting out space inside the city: commercial construction that has to clear review the first time, adaptive reuse of older buildings that were never designed for today's energy rules, and tenant spaces for manufacturers, research groups, outdoor-industry brands and food and beverage companies that fill the city's business parks.

We schedule and supervise the concrete and site work that decide whether those buildings are dry, level and on schedule, and we price the energy code in from the first number instead of discovering it at plan check.

The 2024 codes and the Boulder energy code

The City of Boulder lists the 2024 International Building Codes as adopted in March 2025 and effective August 1, 2025, with the 2024 City of Boulder Energy Conservation Code already effective December 1, 2024, and the 2026 National Electrical Code as amended by the city taking effect August 1, 2026. Those dates matter because a project that was designed on one set of rules and permitted on another carries real redesign cost. We check the effective date of every code against your submittal date during preconstruction, and we say plainly when a schedule sits on a transition.

The energy code is the piece owners underestimate. Commercial projects must be all-electric or use other non-fossil fuel sources, with exceptions for commercial cooking, hospitals, labs, large S-1 occupancies with constant vehicle traffic and emergency generators. All-electric new commercial projects must be 10 percent better than ASHRAE 90.1-2022, and projects that use the mixed-fuel exceptions must be 15 percent better. A restaurant kitchen or a laboratory floor can therefore change the whole mechanical strategy, and we want to know that on the day we price it.

Floodplain, height and the creek

Boulder requires a Floodplain Development Permit for any building with part of its structure in the 100-year floodplain, and the city counts roof overhangs, gutters, footings, decks and balconies as part of the structure. That language catches owners who thought a small addition was outside the regulated area. In September 2013 Boulder Creek ran above 5,000 cubic feet per second against a normal range of about 150 to 200, and buildings along the creek, including Boulder High School, were seriously damaged. We read that as a design input: finished floor elevations, flood-resistant materials at grade, and mechanical equipment placed with water in mind.

Height is the other early constraint. Zoning normally caps buildings at about 35 feet, taller buildings are possible through site review, and the city charter sets a 55 foot ceiling. In May 2026 the council let museums, theaters and athletic facilities seek up to 55 feet and three stories. If your program needs volume, the conversation with planning has to happen before we lock the structural system, because a floor-to-floor change late in design ripples through every trade.

Sequencing a project through review

We write the review path into the schedule as activities with owners and dates: pre-application feedback, floodplain determination where it applies, energy modeling, structural and civil resubmittals, and the building permit itself. Owners in Boulder are often sophisticated and have their own requirements for performance, so we run those requirements through the same schedule instead of treating them as a separate document.

When the project allows it, we prefer design-build delivery because the builder sits at the table while the envelope, the electric load and the height are still negotiable. Where an architect has already finished the drawings, we do a constructability and cost read before bidding so the first price is not a surprise. Either way, the same preconstruction team that priced the work is the team that builds it.

What we build inside the city

The mix in Boulder runs toward interior work and careful additions. Tenant improvements for lab-adjacent and light manufacturing users are the most common, followed by office building construction that has to reach the energy targets, and multifamily apartment projects that fit under the height norm. Each one brings different structural, acoustic and mechanical demands.

On the building-type side, we regularly work in flex and light industrial buildings and in food and beverage processing space, where the cooking exception and the wash-down floors both shape the budget. If you are weighing a site in the city against one in Longmont or Gunbarrel, we will build the comparison with you, including permitting time.

Where the cost sits

Boulder pricing is driven less by labor rates than by scope that arrives late. The all-electric requirement moves cost from gas piping and rooftop units into electrical service, switchgear and heat pump systems, so the utility service size and the transformer lead time deserve a line in the first estimate. Flood-resistant detailing at grade adds cost only where the site actually triggers it, which is why we confirm the floodplain status early.

Foothills weather adds smaller costs that still show up in a schedule. The city averages 21.23 inches of precipitation a year, and Chinook winds can swing a winter day from freezing to mild in hours. We plan concrete placements, roofing and exterior finishes around that, and we use the county snow load map for design rather than a general snowfall figure. Ask us for an itemized range before design is frozen and we will give you one.

Bring us the parcel before the drawings

Send us the address, the program and the review dates you are working against. We will tell you what the energy code, the floodplain map and the height rules mean for cost and schedule, and what we would build to get you through review the first time.

Questions Owners Ask

Does a small addition in Boulder need a floodplain permit?

It can. The city requires a Floodplain Development Permit for any building with part of its structure in the 100-year floodplain, and that includes roof overhangs, gutters, footings, decks and balconies. Owners often assume only the walls count. We check the floodplain map against the footprint, including overhangs, before we price an addition, so the permit is in the schedule from the start.

How does the all-electric requirement change a commercial budget?

It shifts money from gas service and rooftop equipment into electrical capacity and heat pump systems. New all-electric commercial projects must be 10 percent better than ASHRAE 90.1-2022, and mixed-fuel projects using an exception must be 15 percent better. The biggest swing items are service size, switchgear delivery and any cooking or lab load that qualifies for an exception. We carry those as separate lines so you can see the trade-offs.

Can we build taller than 35 feet?

Sometimes. Zoning normally caps height at about 35 feet, taller buildings are possible through site review, and the city charter sets a 55 foot ceiling. Council action in May 2026 also let museums, theaters and athletic facilities seek up to 55 feet and three stories. Your planner will confirm what applies to the parcel, and we will price the structural consequences either way.

Which code edition applies to a project I am designing now?

The city lists the 2024 International Building Codes as effective August 1, 2025, with the 2024 Boulder Energy Conservation Code effective December 1, 2024. The amended 2026 National Electrical Code takes effect August 1, 2026, so a long design that straddles that date should confirm the electrical edition with the city. We track these dates during preconstruction and flag any submittal that sits near a transition.

How do you handle creek-side sites after what happened in 2013?

We start with the floodplain determination and the elevation of the site relative to the creek, then design finished floors, utilities and equipment around that. The 2013 event damaged buildings along Boulder Creek, so owners and lenders now ask hard questions about flood resilience. We document the choices so the insurance and lender conversation is easy.

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