Roofing in Lone Tree, CO

A reroof in Lone Tree is not a same-day, no-paperwork job. The city lists roof replacements among the projects that need a building permit, and the roof itself has to meet a published set of design loads plus, on many properties, the new Colorado Wildfire Resiliency Code. Apollo Construction plans a Lone Tree roof around that process from the first estimate, not after materials are already on order.

When a Lone Tree Reroof Needs a Permit

The City of Lone Tree’s own guidance lists “Roofs replacements” among the common home projects that require a building permit, alongside the broader rule that a permit is needed whenever you construct, enlarge, alter, repair, move, demolish or change a building or structure. In practice, that covers a full tear-off, a re-cover, and most repairs beyond patching a small leak.

Lone Tree accepts applications only through its online permitting portal, and plan review fees are due when you apply. We confirm the scope, the roof area and the assemblies going on before that application is filed, because the permit record and the roof that actually gets installed need to match.

Design Loads and Ice-Barrier Underlayment

The city’s published design criteria set a ground snow load of 30 psf and a roof live load of 30 psf, with attic loads of 10 psf where there is no storage and 20 psf where limited storage is expected. Wind design is 115 mph Ultimate design wind speed under Exposure C, which affects fastening patterns and edge details on a new roof system.

Lone Tree’s amended climatic and geographic design table also lists ice-barrier underlayment as required. On our roofs, that means an ice and water shield membrane goes down at eaves and valleys as part of the base assembly rather than as an optional upgrade, in keeping with the adopted table.

The city’s adopted codes are the 2021 International Residential Code and 2021 International Building Code, each with local amendments, along with the 2021 Fire Code. We build the roof assembly, flashing details and ventilation to those editions, and we flag it for the homeowner if a manufacturer’s own installation instructions call for something beyond the code minimum.

The Colorado Wildfire Resiliency Code and Your Roof

Lone Tree has adopted the Colorado Wildfire Resiliency Code, 2025 Edition, as Chapter 19 of its municipal code, tied to a wildfire-hazard map. The city’s own project page states that mitigation is triggered by qualifying work, including replacing or repairing 25% or more of an existing roof, in addition to a building addition of 500 square feet or greater.

A January 2026 staff report to City Council explains that only the addition or alteration itself has to conform, not the whole existing structure, and that Class I site hardening for a qualifying reroof includes Class A roof coverings, ember protections, roof valley flashings, noncombustible gutters and downspouts, and 1/8-inch mesh vent openings. The same report notes the state map is expected to apply to roughly 214 homes west of I-25 and most residential development east of I-25.

The full adopted local amendment text and a confirmed effective date beyond the code section itself were not available on an official page at the time of this research, so we check a property’s mapped status and the current requirement with the Building Division before finalizing a roof-covering and detailing plan on a qualifying reroof.

Business License, Fees and Use Tax

Lone Tree does not issue or require a contractor license. What it requires is a valid Lone Tree business license for every party named on the permit before that permit can be issued, and the city’s finance office lists the initial fee at $10, with no expiration and no renewal fee. We confirm that licensing is in place before the roofing permit is submitted, so it is not the thing holding up a start date.

Permit fees follow the city’s valuation-based schedule, and plan review adds 65% of the permit fee, with a minimum of $100, due at application. The city also collects its 2.5% use tax on construction materials before the permit is issued. Because a reroof’s valuation drives both the fee and the tax, we write it from the real scope of tear-off, underlayment, covering and flashing rather than a rounded estimate.

Work Hours and Scheduling Around Weather

Exterior construction, including roofing, is limited to 7:00 a.m. to 7:00 p.m. Monday through Friday and 8:00 a.m. to 6:00 p.m. on Saturdays, Sundays and state-recognized holidays. Because a torn-off roof cannot sit open overnight, those hours shape how much of a roof we expose in a single work session.

Inspections are requested through the city’s online system. The Building Division’s own page and the 2026 Resident Guide list different phone numbers for scheduling inspections, so rather than pass along a number that may be out of date, we confirm the current contact method directly with the Building Division before the roof reaches an inspection point.

How We Sequence a Lone Tree Roofing Project

We start with a roof measurement, a wildfire-map check for the address, and a permit application through the city’s portal that reflects the real scope, whether that is a straightforward re-cover or a qualifying reroof under Chapter 19. Business licensing for every party on the permit is confirmed before we apply, and the use tax and plan review fee are budgeted from the actual valuation.

Once the permit is issued, tear-off is staged inside the city’s work-hour limits so that deck, valleys and penetrations are never left exposed longer than necessary. Ice-barrier underlayment goes down at eaves and valleys, flashing and venting follow the adopted code and any Class I hardening the project triggers, and the roof covering goes on last. We close the job with the required inspection and the documentation the city and, where it applies, the wildfire code call for.

Common Questions

Does every roof replacement in Lone Tree need a permit?
Yes. The city lists roof replacements among the common projects that require a building permit, and the same general rule covers most roof repairs beyond a minor patch.

Does Lone Tree require ice-barrier underlayment?
The city’s amended design-criteria table lists ice-barrier underlayment as required, so it is treated as part of the base roof assembly rather than an optional add-on.

Will the Colorado Wildfire Resiliency Code affect my reroof?
It can. The city’s project page states that replacing or repairing 25% or more of an existing roof is one of the triggers for mitigation under the adopted 2025 Edition of the code, which can call for Class A roof coverings, ember protections and other Class I hardening measures. We check the address against the mapped area before finalizing the plan.

Does Lone Tree require a roofing contractor license?
No. The Building Division does not issue or require contractor licenses. It does require a valid Lone Tree business license for every party named on the permit before that permit is issued.

Talk to Us About Your Project

Tell us the roof’s age, slope, current covering and any storm or leak history you have seen, along with whether the address falls inside the mapped wildfire area. We will check the current permit and Wildfire Resiliency Code requirements for your property and lay out a roofing plan and schedule that works around Lone Tree’s process and its work-hour limits.