Do you need sign permits in Denver before installing a business sign?
In most cases, yes—especially for exterior building signs, illuminated signs, monument signs, projecting signs, and many permanent storefront signs. Denver sign permits can take six weeks or longer, so business owners should plan signage 8–10 weeks before opening to allow time for design, permitting, fabrication, and installation.
Denver sign permits are part of the timeline, not a last-minute task
Sign permits in Denver are not just paperwork at the end of a project. They affect what can be built, when the sign can be installed, and whether your opening date stays on track.
If you are installing an exterior sign, replacing a storefront sign, adding illumination, mounting a sign to a building, or placing a freestanding structure, you should assume a permit review may be required. That includes many common business outdoor signs such as wall signs, cabinet signs, illuminated signs, projecting signs, and monument signs.
The most expensive mistake is approving a sign design too late. A sign may still need engineering details, landlord approval, zoning review, permit submission, fabrication time, and installation scheduling before it is ready for your building.
Operator Insight from Mtn High Signs + Design:
“Don’t wait until the last minute. When you’re doing an exterior sign, you need a permit. Permitting can take six weeks or longer depending on the time of year. If you know you’re opening in four weeks, that usually isn’t enough time to get the permit and fabricate the sign. Work backwards from your opening date and give signage at least 8–10 weeks for design, permitting, fabrication, and installation.”
The right Denver sign permit plan starts 8–10 weeks before opening
A practical signage schedule protects your opening date. For most Denver-area commercial projects, business owners should work backward from the date they need the sign installed.
A strong timeline looks like this:
1. Weeks 8–10 before opening: Start sign planning, discuss sign type, site conditions, landlord requirements, and brand goals.
2. Weeks 7–8: Finalize sign designs, measurements, mounting method, materials, and illumination details.
3. Weeks 6–7: Submit permit documents when required and coordinate any requested revisions.
4. Weeks 3–6: Begin fabrication once the design and permitting path are clear.
5. Week 1–2: Schedule installation after approval, production, and site readiness are aligned.
Mtn High Signs + Design helps Denver-area businesses avoid this scramble by managing the sign process from concept through installation. If you are planning exterior signage, storefront signage, custom signs for business, or a multi-sign package, starting early gives the team time to design it correctly, coordinate permit requirements, fabricate it cleanly, and install it without rushing the final result.
Need a permit-ready sign plan before your opening date? Contact Mtn High Signs + Design to start with professional sign designs that account for visibility, materials, code considerations, fabrication, and installation from the beginning.
Different sign types carry different permit expectations
Not every sign follows the same review path. Temporary banners, interior lobby signs, code-required ADA signage, and permanent exterior signs may have very different requirements. The table below gives business owners a practical starting point.
| Sign Type | Typical Cost Range | Typical Timeline | Denver Permit Requirement |
| Exterior wall sign | $2,500–$12,000+ | 6–10 weeks | Often required |
| Illuminated cabinet or channel-style sign | $4,500–$20,000+ | 8–12 weeks | Usually required |
| Monument signs | $8,000–$35,000+ | 10–16 weeks | Usually required; may involve site and electrical review |
| Window graphics | $500–$3,500 | 1–4 weeks | Sometimes required depending on size, coverage, and placement |
| Temporary banners for business | $150–$1,500 | 3 days–3 weeks | Often subject to temporary sign rules |
| Lobby signs for business | $750–$7,500 | 2–6 weeks | Usually not a Denver exterior sign permit issue unless tied to construction scope |
| ADA signage | $25–$250+ per sign | 1–4 weeks | Typically code-required; permit may depend on broader buildout |
| Vehicle graphics | $800–$6,000+ | 1–3 weeks | No building sign permit, but design and installation quality still matter |
These ranges vary based on size, materials, access, electrical work, mounting conditions, engineering needs, and whether the sign is part of a larger construction project.
Permit-ready sign designs prevent costly revisions
A beautiful sign that cannot be approved is not a finished design. Permit-ready sign design considers more than colors and logos.
Before fabrication, a professional sign team should evaluate:
• Sign dimensions and placement
• Building frontage and mounting surface
• Visibility from street, sidewalk, and parking areas
• Electrical requirements for illuminated signage
• Landlord or property management criteria
• Multi-tenant center rules
• Materials, wind load, and attachment method
• ADA signage needs for interior and public-facing spaces
• Installation access, lift requirements, and site conditions
This is where a local full-service shop has an advantage over generic online sign sellers. Online tools may help create basic artwork, but they do not walk your Denver property, account for installation conditions, coordinate permit details, or verify that the sign can actually be installed where you want it.
Mtn High Signs + Design supports custom store signs, personalized business signs, exterior signs, vehicle graphics, wayfinding systems, illuminated signs, and ADA signage with a practical eye toward real-world approval and installation.
Denver business owners should prepare the right information early
You do not need to become a permitting expert, but you can speed up the process by gathering the right details early.
Before requesting a sign quote, prepare:
• Business name and brand files
• Site address and suite number
• Photos of the building or storefront
• Landlord sign criteria, if available
• Target opening date
• Preferred sign type and budget range
• Whether electrical service is available for illuminated signage
• Any existing sign measurements or previous sign locations
• Interior needs such as lobby signs, ADA signage, or wayfinding
For example, a restaurant opening in a Denver retail center may need an exterior wall sign, window graphics, interior menu signage, ADA room signs, and temporary opening banners. If that owner waits until four weeks before launch, the exterior sign may not be permitted, fabricated, and installed in time. If they start 8–10 weeks out, the sign package can move in sequence instead of becoming a bottleneck.
A full-service sign shop reduces risk from design through installation
The best Denver sign permit strategy is simple: involve the sign company early enough that permitting does not become an emergency.
Mtn High Signs + Design is a Denver-area full-service sign shop serving businesses that need more than a printed panel. The team supports custom signs, design, permitting coordination, fabrication, installation, maintenance, vehicle graphics, illuminated signage, monument signs, wayfinding, and industry-specific signage for offices, retail spaces, apartment communities, medical facilities, restaurants, and commercial properties.
Once the design is approved, the business owner should not have to chase every next step. Mtn High Signs + Design helps carry the project forward so owners can focus on the rest of the buildout. The key is allowing enough lead time, because no sign company controls the permit office’s review schedule.
Frequently Asked Questions About Sign Permits in Denver
Do I need a permit for a business sign in Denver?
Most permanent exterior business signs in Denver require a permit, especially signs attached to buildings, illuminated signs, projecting signs, monument signs, and larger storefront signs. Interior signs may not require the same type of sign permit, but ADA signage and buildout-related signage still need to meet applicable code requirements.
How long do Denver sign permits take?
Denver sign permits can take six weeks or longer depending on the time of year, project complexity, review volume, and whether revisions are requested. Business owners should allow 8–10 weeks for the full signage process, including design, permitting, fabrication, and installation.
Can I install my sign before the permit is approved?
You should not install a sign that requires a permit before approval. Installing without the proper permit can lead to delays, removal, fines, failed inspections, or added costs. A permit-ready process protects your investment and helps avoid preventable problems.
Are temporary banners for business regulated in Denver?
Temporary banners may still be subject to local sign rules, including limits on size, placement, and display duration. If you need banners for business openings, promotions, or events, ask your sign company to confirm whether the banner is considered temporary signage and whether restrictions apply.
Who handles the sign permit process?
A full-service sign company can typically help coordinate the permit process as part of the project. With Mtn High Signs + Design, once the design is approved, the team helps move the project through the next steps so you can stay focused on opening, operating, or remodeling your business.
