Deck Permit in Denver, CO
Permit Summary
Do You Need a Deck Permit?
Exemptions
Under 2025 Denver Building Code §130.3, an uncovered deck regulated by the Denver Residential Code is exempt from a building construction permit when it does not exceed 200 square feet and its walking surfaces are not more than 30 inches above grade at any point; the exemption includes its associated guards, stairs, and ramps. This does not waive independent zoning or historic approvals. Denver's deck FAQ states that uncovered decks 12 inches or less above ground outside designated landmarks and historic districts do not need a zoning permit. The city's general summary inconsistently uses '12 inches or more' for zoning, so confirm any exactly-12-inch case. Covered structures are not covered by the uncovered-deck exemption.
Attached / Detached Rules
Decks may be connected to the dwelling or supported independently, but permit plans must show their complete structural support, including ledgers, connections to the home when proposed, post and beam arrangements, lateral restraints, uplift anchors and cantilevers. For covered decks, show roof framing and connections as well. Any additional load carried by the existing dwelling must be demonstrated in the structural submittal.
Egress Rules
Decks, landings and access stairs that form part of a required dwelling exit must satisfy applicable Denver Residential Code means-of-egress and stair/landing standards. Plans should show stairs, landing geometry, guardrails and handrails where present. Existing required egress must remain code-compliant when a deck is added or altered.
Permit & Review Path
Permit / Review Path
Create an e-permits account, go to Development Services > Apply for a Permit, and select the Building Log pathway for building, zoning and any applicable SUDP review. Denver's published ADMIN 131A policy classifies qualifying first-story/ground-level decks as Residential Express (except when parkway review is required); second-story and rooftop decks as Intermediate Residential. Zoning-only residential projects also fall under Intermediate Residential. Larger or more complex associated work can change classification. Electrical, mechanical and plumbing permits follow their applicable separate quick-permit processes.
Zoning & Placement Rules
Zoning Rules
Denver generally requires zoning review for uncovered decks more than 12 inches above ground and for covered deck/porch/patio structures. A non-landmark uncovered deck at or below 12 inches is identified as exempt in the city's FAQ, subject to its conflicting wording at exactly 12 inches. Zoning evaluates the applicable zone district, structure location, lot coverage, setbacks, building form and, when relevant, upper-level or rooftop-deck design standards. A building-permit exemption is not a zoning exemption.
Setback Rules
Required front, side, rear and special setbacks depend on the property's specific zone district, applicable building form, proposed deck height and whether the deck is covered or at an upper level. Denver does not publish one universal setback for all decks. Designated parkway setbacks require an exception request if the proposal encroaches. Applicable rooftop/second-story deck standards can restrict the rear 35% of a zone lot.
Lot Coverage Rules
Zoning review evaluates the deck's footprint and its effect on the applicable zone district's building form, lot-coverage and siting limits; the rules depend on the lot, building type, configuration and whether the deck is covered. Consult the current Denver Zoning Code and property zoning rather than applying a single citywide maximum deck-coverage percentage.
Special Area Rules
Historic-district and individual-landmark projects require Landmark Preservation's certificate of appropriateness; coordinate before building/zoning review. Encroachments into designated parkway setbacks require a parkway exception request. Floodplain locations or excavation within two feet of sewer lines may trigger sewer use and drainage review. Impacts to canopy or roots of public right-of-way trees require coordination with Denver Forestry. Altered curb cuts/driveways can trigger transportation review and state-highway connections require CDOT approvals. Qualifying larger construction/demolition projects may also be subject to the September 2026 recycling-and-reuse ordinance.
Structural Requirements
Structural / Load Rules
The 2025 Denver Residential Code and the city's May 20, 2026 structural-submittal policy require structural documents to state applicable dead, live and other design loads, and to demonstrate a continuous load path to foundations. Show member sizes, grades, spacing, spans, fastenings, uplift connections and the required lateral deck restraint under DRC R507.9. Wind, seismic, soil and other site loads must be considered where applicable. Do not use a roof snow-load parameter as a deck live-load allowance.
Foundation / Footing Rules
Dimension footing locations, sizes and depths and detail posts, anchors, post-to-beam connections and the transfer of deck loads to supporting soil. Plans must comply with the applicable Denver Residential Code footing and foundation requirements. A geotechnical investigation is required only if the project triggers the city's DRC R401.4 geotechnical policy; do not assume it is mandatory for every deck.
Ledger / House Connection Rules
Plans for a house-attached deck must detail ledger location, attachment to the existing structural framing, fastener or connector arrangement, lateral restraint in accordance with DRC R507.9, and required uplift resistance. Where the existing structure is proposed to support additional loads, Denver's 2026 structural-submittal policy may require an inspection-and-integrity letter prepared by the licensed design professional. A freestanding design must instead show an independent compliant load path.
Guardrail Rules
Guards are required where the Denver Residential Code's elevated walking-surface, landing and stair conditions trigger them; lower uncovered decks may not require guards. Identify guard locations, heights, infill and attachment details in the submitted deck drawings. The 2025 building-permit exemption for qualifying small, low uncovered decks expressly includes associated guards but does not waive applicable construction safety standards.
Stair / Handrail Rules
Where deck access includes steps or stairs, submit stair layout, rise/run and landing details, and guard and handrail design where required. Stair and handrail requirements depend on geometry and height under the applicable Denver Residential Code; structural deck drawings must identify the relevant details.
Roof Deck Rules
Second-story and rooftop decks are reviewed as Intermediate Residential projects under Denver's published classification policy. Current zoning standards can prohibit upper-story/roof decks in the rear 35% of qualifying zone lots. Under Denver's May 2026 formal zoning determination for Urban Center contexts, applicability is narrowed to specified townhouse and accessory dwelling unit conditions rather than every Urban Center building form. Where the detached-ADU exception applies, the lot must abut an alley at the rear, the deck must be wholly within 15 feet of the rear lot line, walking-surface area may not exceed 100 square feet, and surface height may not exceed 14 feet. Check the actual zone district and code section before relying on that exception. Rooftop work also requires appropriate structural/load-path review.
Heavy Load Rules
Hot tubs, spas, large planters, equipment or other unusually heavy point or concentrated loads must be identified on deck plans and included in structural load calculations and support details. Denver's structural policy requires load locations, material specifications, connections and substantiation for engineered design; installing a prefabricated above-ground hot tub may also affect residential review classification. Special loads cannot be assumed to be covered by ordinary prescriptive deck framing.
Plans & Professional Design
Prescriptive Plan Rules
Denver publishes a sample residential shed/deck site plan and elevation sheet, not a blanket preapproved structural deck design. For ordinary compliant decks, prescriptive Denver Residential Code construction provisions and accepted prescriptive structural solutions may be used where applicable, but applicants must still submit site-specific framing, footing, ledger and connection details. Nonprescriptive configurations require sufficient engineered documentation.
Professional Design Rules
Professional design is not expressly required for every standard prescriptive residential deck. When engineered design is needed, provide signed/sealed design documents and calculations from a licensed design professional under Denver's current structural-submittal policy and building code. The May 20, 2026 policy additionally calls for a licensed professional's letter of inspection and structural integrity when a project changes the loads on an existing structural member that remains.
Inspections
Inspection Stages
For decks with issued construction permits, arrange required inspections through Denver e-permits before covering work; the specific permit inspection record governs. Depending on scope, this can include footing/foundation, framing and structural connections, stair and guard details, and final building inspection; zoning, landmark, SUDP or trade inspections may also be required. Denver says most construction projects require a preconstruction meeting, and inspections are ordinarily completed within two business days of the request. A zoning-only or permit-exempt deck does not automatically follow the same building-inspection sequence.
What You Need Before Applying
Requirements
Determine whether the proposed deck is uncovered or covered, its area, the height of its walking surface above grade, and the applicable property zoning. Obtain zoning and/or residential construction approval as required before beginning work. Design construction to comply with the 2025 Denver Building Code and Denver Residential Code, including structural, safety, access, and site-specific zoning requirements. Eligible owner-occupants may apply as homeowners; otherwise an appropriately licensed contractor may be needed. Obtain separate trade or sewer use and drainage approvals when triggered by project scope or site conditions.
Required Documents
Submit a scaled site plan with north arrow, lot lines, streets and alleys, existing structures/driveways, deck location, height, dimensions and distances to lot lines and other structures. Include dimensioned elevations and deck/framing details: joist or rafter spacing, beams and spans, uplift and lateral connections, posts, footing sizes/depths, ledger fastening, decking, cantilevers, stairs, guards and handrails. Identify utility lines on site plans when SUDP review applies. Supply structural calculations, professional certifications, geotechnical information, landmark materials or other plans when the project triggers those reviews.