Which Denver Home Projects Need a Permit?
Permits Required
- Structural work: Removing or modifying load-bearing walls, adding rooms, building additions
- Electrical: New circuits, panel upgrades, moving outlets (not just replacing fixtures)
- Plumbing: Moving or adding fixtures, water heater replacement, sewer line work
- Roofing: Full roof replacement (repair may not require a permit)
- Concrete: Driveways, patios, and sidewalks in the right-of-way
- Basement finishing: Framing, electrical, plumbing, and egress windows
- Decks: Any deck over 30 inches above grade
- Demolition: Major structural demolition, full room removal
- HVAC: New systems, major modifications, ductwork changes
- Windows: Changing window sizes or adding new openings
- Fences: Over 6 feet tall or in the front yard setback
No Permit Needed
- Painting (interior and exterior)
- Drywall repair and patching (no structural changes)
- Flooring replacement (no subfloor structural changes)
- Cabinet installation and replacement
- Countertop replacement
- Fixture replacement (same location — swapping a faucet, light fixture, or toilet)
- Landscaping and gardening
- Siding replacement (same material, no structural changes)
- Fences under 6 feet (not in front setback)
- Minor concrete repair (not full replacement)
Denver Permit Costs
| Permit Type | Cost Range | Processing Time |
|---|---|---|
| Residential building (minor) | $100 - $300 | 1-2 weeks |
| Residential building (major) | $300 - $1,500 | 2-6 weeks |
| Electrical | $75 - $250 | 1-2 weeks |
| Plumbing | $75 - $250 | 1-2 weeks |
| Mechanical (HVAC) | $75 - $200 | 1-2 weeks |
| Roofing | $100 - $300 | 1-2 weeks |
| Demolition | $50 - $200 | 1-3 weeks |
Denver calculates most permit fees based on project valuation. Expect to pay roughly 1-2% of total project cost in permits and fees.
How to Get a Denver Building Permit
Step 1: Determine Requirements
Call Denver's Development Services Center at (720) 865-2705 or visit the online permit portal at denvergov.org/permits. Describe your project and they'll tell you exactly what permits and documentation you need.
Step 2: Prepare Documents
Most residential permits require: a completed application, a site plan showing your property and the work location, construction drawings (for structural work), and a contractor license number (for permitted work done by contractors).
Step 3: Submit Application
Denver offers online submission through eDevelopment for most residential permits. You can also submit in person at the Development Services Center at 201 W Colfax Ave.
Step 4: Plan Review
Simple permits (like roofing) may be approved same-day. Complex projects (basement finishing, additions) require plan review that takes 2-6 weeks. Denver's Community Planning and Development department reviews for code compliance.
Step 5: Inspections
Once permitted, work must pass inspections at key stages (foundation, framing, rough electrical/plumbing, insulation, final). Schedule inspections through Denver's online portal at least 24 hours in advance.
What Happens If You Skip the Permit?
Working without required permits in Denver carries real consequences:
- Stop work order: If an inspector discovers unpermitted work, they can halt your project immediately.
- Double permit fees: Denver charges double the normal permit fee for work done without permits.
- Required demolition: In worst cases, you may have to tear out and redo unpermitted work.
- Insurance issues: Homeowner's insurance may deny claims related to unpermitted work.
- Sale complications: Unpermitted work shows up in title searches and home inspections. Buyers will either negotiate a lower price or walk away.
- Liability: If unpermitted work causes injury or property damage, you bear full liability.
Permits in Denver vs. Surrounding Cities
Permit requirements and processes vary across the Denver metro:
- Aurora: Similar requirements to Denver. Online portal at auroragov.org.
- Lakewood: Slightly simpler process. Many minor projects approved over the counter.
- Centennial: Uses Arapahoe County building department for permits.
- Boulder: Stricter than Denver, especially for energy code and green building requirements.
- Unincorporated areas: Use county building departments (Jefferson, Arapahoe, Adams, Douglas).
Your contractor should know the specific requirements for your jurisdiction. Trustie Services handles permit applications as part of our remodeling and construction services. Call (720) 213-5521 with questions.
The Denver Permit Process: What Really Happens
Understanding what actually happens when you apply for a building permit in Denver demystifies the process and helps you plan your project timeline realistically. When you or your contractor submits a permit application, it enters Denver's Community Planning and Development department for review. The review ensures that your proposed work complies with the International Building Code as adopted by Denver, Denver's zoning code including setbacks, height limits, and lot coverage, Denver's energy conservation code, and any applicable overlay district or historic district requirements.
The complexity of your project determines the review path. Simple permits like roofing, furnace replacement, and basic electrical work may be issued over the counter or within a few business days. These projects have well-established code requirements and minimal design complexity. Intermediate permits like basement finishing, deck construction, and bathroom additions typically require plan review taking two to four weeks. The reviewer verifies that your plans show code-compliant construction including proper structural connections, adequate egress, correct electrical and plumbing configurations, and proper fire separation where required. Complex permits like room additions, structural modifications, and major remodels can take four to eight weeks or longer for plan review. These projects may require review by multiple departments including structural, fire, zoning, and utilities.
If the plan reviewer identifies issues, they will provide comments listing required changes. You or your contractor then revises the plans and resubmits. Each revision cycle can add one to three weeks to the timeline. The most common reason for plan review comments in Denver residential projects is incomplete drawings that do not show enough detail for the reviewer to verify code compliance. Submitting complete, detailed plans from the start is the single best way to avoid delays.
Working with Denver Inspectors
Once your permit is issued and work begins, Denver inspectors verify that the actual construction matches the approved plans and meets code. Inspections are scheduled through Denver's online portal and typically occur within one to two business days of the request. The inspector visits the site, reviews the work, and issues either an approval or a correction notice.
If corrections are required, the inspector will explain what needs to change and why. Common correction items include electrical boxes not properly secured, plumbing drain slopes not meeting minimum requirements, improper or missing fire blocking in wall cavities, insufficient nail spacing on shear walls, and missing smoke or carbon monoxide detectors. These are typically minor fixes that a competent contractor addresses within a day or two, after which re-inspection is scheduled.
The relationship between your contractor and Denver's inspection team matters. Experienced Denver contractors know the inspectors, understand their expectations, and build to pass inspection the first time. This saves time and frustration compared to working with contractors who are unfamiliar with Denver's specific inspection standards.
Common Permit Mistakes That Cost Homeowners Money
The most expensive permit-related mistakes in Denver residential projects include starting work before the permit is issued. Denver charges double permit fees for work begun without a permit, and if the work does not meet code, you may need to tear it out and start over. Hiring unlicensed contractors for permitted work creates problems because Denver requires contractor license numbers on permit applications. If your contractor cannot provide a license number, that is a major red flag. Ignoring the scope of your permit is another costly mistake. Your permit authorizes specific work as shown on the approved plans. Changing the scope during construction without updating the permit can result in failed inspections and required modifications.
Homeowners sometimes try to avoid permits by breaking a large project into smaller components that individually do not require permits. Denver's building department is aware of this tactic and will flag it if discovered. The consequences include stop-work orders, double fees, and a more scrutinized inspection process for the remainder of the project.
Permits for Historic Denver Properties
If your home is in one of Denver's historic districts or is individually designated as a historic landmark, additional review and approval may be required before a building permit is issued. Denver's Landmark Preservation Commission reviews exterior changes to designated properties to ensure they are compatible with the historic character of the building and district. This applies to projects affecting the exterior appearance including roofing material changes, siding replacement with different materials, window replacement, and additions visible from the street.
Interior work and changes not visible from a public right-of-way generally do not require landmark review, though they still need standard building permits. If your home is in a historic district, contact Denver's Landmark Preservation office early in your planning process to understand what additional reviews may be required.
Special Permit Situations in Denver
Accessory Dwelling Units
Denver's ADU ordinance, updated in recent years, allows homeowners to build accessory dwelling units on most residential lots. ADU permits require specific documentation including a site plan showing the ADU location relative to the primary dwelling and property lines, floor plans meeting Denver's ADU size and design requirements, and compliance with parking requirements for the lot. ADU permits typically take four to six weeks for plan review due to their multi-department review requirements.
Solar Panel Installation
Solar installations on residential roofs require electrical permits in Denver. Most solar installers handle the permit process as part of their installation service. The permit ensures that the electrical connection meets code, the structural load on the roof is within limits, and fire access requirements on the roof surface are maintained.
Navigating Denver's permit process does not have to be stressful. Trustie Services handles permit applications as part of our project management for remodeling, roofing, concrete, and other permitted work. We prepare the applications, manage the plan review process, schedule inspections, and address any corrections. Call (720) 213-5521 to discuss your project.
Understanding Denver's Inspection Timeline
Once your permit is issued and construction begins, inspections become the critical checkpoints that keep your project moving forward. Denver requires inspections at specific stages of construction, and work cannot proceed past these stages until the inspection is passed. Understanding this timeline helps you avoid costly delays where crews are idle waiting for inspection approval.
The foundation inspection occurs after footings are dug and before concrete is poured. The inspector verifies that footing dimensions, depth, and reinforcement match the approved plans and that the soil bearing capacity is adequate. In Denver's expansive clay soils, the inspector may also verify that the footing depth reaches below the frost line of thirty-six inches and that proper drainage provisions are in place.
The framing inspection occurs after all structural framing is complete including walls, floor joists, rafters, and sheathing. The inspector checks member sizes, connection hardware, nailing patterns, fire blocking between floors and at the top of walls, and proper headers above openings. This is one of the most detailed inspections because framing errors are expensive to correct after being covered by finishes.
Rough-in inspections for electrical, plumbing, and mechanical systems occur after these systems are installed but before insulation and drywall conceal them. Each trade typically has a separate inspection. The electrical inspector verifies wire sizing, box fill calculations, circuit protection, and proper grounding. The plumbing inspector checks pipe sizing, drain slopes, venting, and water supply connections. The mechanical inspector reviews ductwork sizing, combustion air provisions, and equipment clearances.
The insulation inspection verifies that insulation type, thickness, and R-value meet Denver's energy code requirements. The inspector also checks for proper vapor barriers, air sealing at penetrations, and insulation installation quality. Gaps, compression, or improperly faced insulation can result in a failed inspection and required correction before drywall can proceed.
The final inspection is the last step before your project receives a certificate of completion. The inspector reviews all finished work for code compliance including proper installation of fixtures, devices, and appliances, adequate egress from all rooms, proper operation of safety systems like smoke and carbon monoxide detectors, and compliance with accessibility requirements where applicable. Passing the final inspection means your project officially meets Denver's building standards and can be occupied and used for its intended purpose.
Digital Tools for Denver Permits
Denver has invested significantly in digital permit management tools that make the process more accessible and transparent for homeowners. The eDevelopment portal at denvergov.org allows online permit applications for most residential project types, electronic plan submission eliminating the need for paper drawings, real-time tracking of your permit application status, online inspection scheduling with next-day availability, electronic payment of permit fees, and access to your complete permit history for the property.
The Denver building code is also available online through Denver's municipal code website, though navigating building code language without construction experience is challenging. For homeowners managing their own permitted projects, Denver's Development Services Center provides free code consultation services where you can discuss your project with a code specialist and get guidance on specific requirements. This service is available both in person and by phone and can save significant time and confusion during the planning phase.
Contractor Licensing in Denver
Denver requires contractors performing permitted work to hold appropriate licenses issued by Denver's Excise and Licenses department. The licensing system includes several categories relevant to residential work. Class A general contractors can perform any type of construction work. Class B general contractors are limited to projects under a certain dollar threshold. Specialty contractors hold licenses for specific trades including electrical, plumbing, mechanical, and roofing. Handyman licenses cover smaller projects under a limited dollar amount and scope.
Before hiring any contractor for permitted work in Denver, verify their license status through Denver's online license lookup tool. An unlicensed contractor cannot legally pull permits in Denver, which means either the work goes unpermitted (creating the problems described earlier) or the contractor asks you to pull the permit as the homeowner, which transfers all code compliance responsibility to you. Licensed contractors carry the responsibility for code-compliant work and are accountable to Denver's licensing board for the quality of their work.
Resources for Denver Homeowners
Denver provides several free resources that help homeowners navigate the building permit process without hiring a consultant. The Development Services Center at 201 West Colfax Avenue offers walk-in consultation where homeowners can discuss their projects with code specialists and get guidance on permit requirements, application procedures, and code compliance strategies. Phone consultations are also available at 720-865-2705 during business hours for quick questions that do not require document review.
Denver's online code library provides free access to the full text of all adopted building codes. While building code language is technical, homeowners who take time to read the sections relevant to their project gain a much better understanding of what inspectors are looking for and why certain requirements exist. The International Residential Code, which Denver has adopted with local amendments, is organized logically by construction phase and building system, making it navigable for motivated non-professionals.
Denver's neighborhood inspection districts each have assigned inspectors who become familiar with the housing stock and common issues in their area. Building a positive working relationship with your district's inspector benefits current and future projects. Inspectors appreciate homeowners and contractors who take code compliance seriously, ask questions proactively, and prepare thoroughly for inspections. This professional approach to the inspection process results in smoother reviews, faster approvals, and fewer costly surprises during construction.