Deck Builders in Colorado: CO Deck Costs, Permits and a Faster Way to Build

Colorado homeowners can go three directions: hire a local deck builder, frame a deck themselves from raw lumber, or order an A-DIY engineered deck kit. The A-DIY kit shows up at your door as one complete system, and you, a friend or a local handyman can assemble it in a few hours with nothing more than a drill.

Contractor pricing in Colorado moves with the deck’s size, the decking material, how high it sits above grade, your part of the state and local labor rates, and bids along the Front Range and in the mountain resort towns tend to run higher than elsewhere. A-DIY deck kits start at $3,699 for pressure-treated wood and $5,700 for composite, typically 30–50% less than hiring a contractor. Use our deck cost calculator to compare prices in your area.

Yes. An engineered deck kit delivers a true structural deck without the contractor’s design fees and a full crew’s labor. The A-DIY kit ships with everything required, footings included, so you skip the measuring, the cutting and the trips to the lumber yard.

No. A-DIY is not a contractor and does not install decks. We design, engineer and deliver complete deck kits to homes across Colorado. You can assemble it yourself or hire any local handyman, carpenter or contractor to put it together.

Yes. Many Colorado homeowners bring in a local handyman to assemble their A-DIY kit. Since the components arrive ready to assemble with step-by-step instructions, the work takes a small fraction of the hours a custom build requires, and that keeps the labor charge modest.

In most cases, yes. Colorado has no statewide residential code, so your city, county or regional building department adopts its own code and decides when a deck needs a permit, usually based on height above grade, square footage, attachment to the house and whether it serves an exterior door. Rules change at the municipal line, so check with your local building department before you order.

Denver permits are issued by Community Planning and Development under the 2025 Denver Building and Fire Codes. An uncovered deck 12 inches or more off the ground requires a zoning permit, and a deck 30 inches or more off the ground requires a building permit as well. Your application needs a site plan drawn to scale, building elevations and framing details covering beams, joists, posts, footing size and depth, the ledger connection, stairs and guards. Homeowners who own and occupy a single-family home can pull the permit and do the work themselves.

There is no single statewide answer, because each Colorado jurisdiction sets its own frost depth in the residential code it adopts. Under the International Residential Code that most Colorado communities use, footings for a deck supported by the house must extend below the local frost line, while decks not supported by the house are exempt from that rule; Fort Collins, for example, requires 30 inches for an attached deck and 12 inches for a freestanding one. Swelling clay soils are common along the Front Range, so some departments ask for extra foundation detail. Always confirm the depth with your building department.

Yes. On a sloped or uneven Colorado lot, an A-DIY deck is brought level by adjusting the heights of the supporting posts instead of reshaping the ground. Supported configurations can be elevated to approximately 40 inches using the appropriate posts, foundations and bracing.

Every A-DIY kit ships with Tuff Block footings. If your property, deck height or local code calls for a different foundation, the deck can be set on sonotubes, helical piles, ground screws, in-ground posts or an approved surface footing system instead.

Both perform well in Colorado. Pressure-treated wood costs less upfront and takes stain or sealer readily, but intense high-altitude sun, dry air, hail and repeated freeze-thaw cycles mean it needs regular cleaning and resealing. Composite costs more but never needs sanding, staining or sealing, resists fading and splintering, and its boards carry a 25-year warranty. In mapped wildfire zones, your building department may limit which deck materials are allowed on a new deck.

Applicable A-DIY deck configurations are engineered to hold up to 15,000 pounds when properly assembled, supported and installed according to the applicable specifications. Every A-DIY deck system also includes a five-year structural warranty.

A-DIY delivers to cities and towns throughout Colorado, typically within 10–14 business days. All components and hardware arrive in one delivery, so you can start assembling as soon as the kit is unloaded.

Yes. You can choose Build Now, Pay Later financing through Affirm (subject to approval), 0% split payments over up to eight months, or A-DIY Reserve, a $250 deposit that locks in today’s price for a future delivery date.

Yes. For an applicable A-DIY configuration, the diagrams show the dimensions, structural layout, beam, joist and post locations, lumber sizes and major connections, which is the kind of detail Colorado building departments ask for with a deck permit application. Your department may still require a site plan, survey or stamped documents, and because it has final authority, approval is not guaranteed.