Licensed deck contractors and builders serving Denver, Colorado. License data and local permit requirements.
Last updated: April 2026 · Cost data from RSMeans & BLS regional indices · Permit data from official city .gov sources
Local context for Denver
Denver permits are issued by Community Planning and Development through the E-Permits portal (Accela), with Plan Review, Permits, and Inspections staff coordinating trade sign-offs. Denver adopted the 2024 International Building Code cycle and enforces the Energize Denver Ordinance, which requires buildings 25,000 square feet and larger to meet benchmarking and performance targets, plus a Green Buildings Ordinance cool-roof requirement triggered at roof replacement.
Permits filed through Denver Community Planning and Development · official portal
Denver's top deck builders since 1984. No-money-down policy. Licensed and insured to $2 million with a 2-year warranty on deck work. Serves the entire Colorado Front Range.
Custom deck builder serving Denver metro for over 25 years. Specializes in composite deck installation with Trex and TimberTech materials, pergolas, motorized patio covers, and outdoor kitchens. Engineered designs reviewed by licensed engineers.
Building high quality decks in the Denver metro since 1994. Uses computer design software for custom deck layouts. Offers 10-year structural warranty and winter construction services.
Family-owned and operated deck builder serving Denver and the Front Range since 1992. Over three decades of expertise specializing in both natural wood and composite decks.
Premier deck-building company in the Greater Denver Area with over a decade of experience. Partners with local electrical, plumbing, and masonry professionals for specialty work. Based in Longmont.
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A short checklist of things to verify before you sign a contract or hand over a deposit. These apply whether you find your contractor here, on Angi, or anywhere else.
Every contractor we list is verified against public records, but verification is not a quality guarantee. Run through this checklist on any contractor you are seriously considering.
Follow these steps to find a reliable, licensed deck builder in the Denver, Colorado area.
Verify licenses and insurance
Check with your state licensing board. Ensure they carry general liability and workers compensation insurance.
Get 3+ written estimates
Compare detailed quotes that break down materials, labor, permits, and timeline. Avoid verbal-only estimates.
Check reviews and references
Look at Google reviews, BBB ratings, and ask for 2-3 references from recent local projects.
Confirm who pulls the permit
A reputable contractor pulls the building permit themselves — never agree to skip the permit.
Review the contract carefully
The contract should include scope of work, materials, timeline, payment schedule, warranty, and change order process.
Never pay more than 30% upfront
Standard payment schedules are 10-30% deposit, progress payments, and final payment upon completion and inspection.
Average deck building costs in Denver based on Colorado labor rates and material prices. Costs are for a typical 300 sq ft deck with railing.
| Service | Low | Average | High |
|---|---|---|---|
| Pressure-Treated Wood Deck | $6,458 | $8,280 | $10,930 |
| Cedar Deck | $8,970 | $11,500 | $15,180 |
| Composite Deck (Trex, TimberTech) | $12,558 | $16,100 | $21,252 |
Costs are estimates based on Colorado regional data. Actual prices vary by project complexity, site conditions, and contractor. Permit fees ($86–$575 in CO) are not included.
Get a Personalized EstimateDenver requires a building permit for most deck projects. Here are the key details:
Fees
Valuation-based: $1-$500 = $20, $501-$2,000 = $35, $2,001-$25,000 = $35 + $8 per additional $1,000 over $2,000. Plan review fee: 50% of permit fee for projects over $2,000. 2.5% surcharge on credit/debit payments.
Processing Time
3-10 business days for standard residential projects. Real-time status dashboard available at denvergov.org/buildingpermitstatus.
Exemptions
Uncovered decks 12 inches or less off ground: no permit needed. Uncovered decks over 12 inches: zoning permit required. Uncovered decks 30 inches or more off ground: both zoning AND building permits required. All covered structures need both permits.
Building Code
Denver Residential Code 2021, based on the 2021 International Residential Code (IRC) with Denver amendments
Denver-Specific Rules
The average cost to build a 300 sq ft deck in Denver ranges from $6,458 for pressure-treated wood to $21,252 for composite materials. The final price depends on materials, size, elevation, railing, and whether your project requires a permit. Use our free deck cost calculator for a personalized estimate.
Most cities, including Denver, require a building permit for decks that are attached to the house, over 200 square feet, or more than 30 inches above grade. Small, freestanding ground-level decks may be exempt. Contact the Denver building department or check our permit guide for specific requirements and fees.
Look for licensed and insured contractors with at least 3 years of experience. Verify their license with the Colorado licensing board, check Google reviews and BBB ratings, ask for 3+ written quotes, and request references from recent projects in the Denver area. Never pay more than 30% upfront.
The best material depends on your climate and budget. Composite decking (like Trex or TimberTech) is the most popular choice in Colorado due to low maintenance and 25-30 year lifespan. Pressure-treated wood is the most affordable at $21-$52 per sq ft installed. Cedar offers natural beauty but requires regular sealing.
A typical 200-400 sq ft deck takes 3-7 days to build once the permit is approved and materials are delivered. Permit approval in Denver can take 1-4 weeks depending on your local building department's workload. Plan for 4-8 weeks total from signing a contract to project completion.
Ask about their license and insurance coverage, who pulls the building permit, their warranty on labor and materials, a detailed written estimate, their timeline, and whether they use subcontractors. Also ask to see photos of recent deck projects in Denver and request at least 2-3 references.
Only buildings 25,000 square feet and larger fall under the Green Buildings Ordinance. Those owners can choose among solar, green roof, off-site green space, certification, or a fee. Single-family homes and smaller commercial buildings are not covered.
The Front Range is in one of the most active severe-hail zones in the country. Denver roofers frequently specify Class 4 impact-rated shingles, which carry insurance discounts with most carriers writing policies in Colorado.
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Fees: Valuation-based: $1-$500 = $20, $501-$2,000 = $35, $2,001-$25,000 = $35 + $8 per additional $1,000 over $2,000. Plan review fee: 50% of permit fee for projects over $2,000. 2.5% surcharge on credit/debit payments.
Timeline: 3-10 business days for standard residential projects. Real-time status dashboard available at denvergov.org/buildingpermitstatus.
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PermitDeck is a directory service, not a referral service. We do not guarantee any contractor's work quality, licensing status, or availability. Listings may include unverified information. Always verify credentials independently, check references, and get multiple written quotes before hiring any contractor.