Land Clearing Permits in Denver & Jefferson County (2026)

In Denver’s own service area, the rule that governs a clearing project depends on which side of the city line the parcel sits on. Inside Denver, the trigger is tied to construction activity and, above one acre, a separate state permit; the city also licenses the tree trade itself. Step into unincorporated Jefferson County and the number changes to half an acre for a grading permit. Douglas, Elbert, Adams and Arapahoe counties are outside the two jurisdictions this guide covers in detail, and their own thresholds are a question for each county directly.

Here is the sequence, with each rule beside its source.

Do You Need a Permit to Clear Land in Denver?

Construction work inside the City and County of Denver is permitted through a Construction Activities Stormwater Discharge Permit (CASDP) from the Department of Transportation and Infrastructure, formally called an Erosion Control Permit; whether a given project needs one is a determination DOTI makes. Separately, projects that disturb one or more acres, including demolition, may also need a “Stormwater Discharge Permit Associated with Construction Activities” from the state health department, on top of the city’s own CASDP (City and County of Denver).

That means the one-acre line is not where Denver’s paperwork starts; it is where a second, state-level permit stacks on top of the city’s own construction permitting. Requirements vary by parcel, scope and jurisdiction. Cut Brush can flag what commonly applies and help identify the right office; the governing authority decides.

Denver Also Licenses the Tree Trade Itself

This is the rule that catches people who have cleared land in other states. Denver Revised Municipal Code Chapter 57, the city’s vegetation ordinance, makes it unlawful for any person to engage in the business of, or receive compensation for, cutting, trimming, pruning or removing trees inside city limits without a tree service license from the Director of Excise and Licenses (City and County of Denver, Chapter 57).

That requirement reaches conduct and payment inside Denver, not marketing the work, and it says nothing about who holds the license. This guide states the rule so a Denver customer can ask any contractor about it directly; it is not a claim that Cut Brush holds a Denver tree service license.

Jefferson County’s Separate Half-Acre Line

Leave the city and the picture resets. Jefferson County’s own guidance answers “Do I need a land disturbance permit?” with a table keyed to acreage rather than to construction activity generally: a primary structure or “anything else” disturbing half an acre or more needs a Grading Permit, reviewed against Section 16 of the county zoning resolution (Jefferson County). Work that stays under half an acre still has to meet Section 16’s performance standards even without a permit.

That half-acre threshold covers a lot of the foothills acreage around Evergreen, Conifer and Morrison, so a homesite or a larger clearing project out that way should expect to plan around it well before equipment shows up. Smaller work is not automatically exempt from the rest of Section 16 either: the county’s own guidance is explicit that ground under the half-acre line still has to meet the zoning resolution’s performance standards, even when no permit application is filed. In practice that means a walk-through is worth having even on a project that looks small enough to skip the paperwork question entirely.

What About Douglas, Elbert, Adams and Arapahoe Counties?

Cut Brush’s Front Range service area also reaches Castle Rock, Parker, Franktown, Sedalia and Larkspur in Douglas County; Elizabeth in Elbert County; Brighton, Bennett, Strasburg and Watkins in Adams County; and Byers and Deer Trail in Arapahoe County. None of those counties’ specific disturbance thresholds are stated here, because they were not part of this guide’s research and stating a number without a source would be a guess, not a fact. If your parcel is in one of those counties, the county planning office is the place to confirm what applies before work begins.

Can You Burn the Brush Instead?

Colorado regulates open burning statewide through Regulation No. 9 (5 CCR 1001-11), administered by the state health department, and individual counties and fire districts layer their own burn permits and day-of conditions on top of that framework. Specific seasonal dates and fees differ by jurisdiction and were not confirmed for every county in this service area, so none are stated here.

What is consistent across the territory is that burning brush is a permission-and-conditions route, not a free one, which is a large part of why chipping material in place with a forestry mulcher has become the default choice on Front Range acreage. Nothing is piled, nothing needs a burn permit, and the disposal question never opens. Where a property owner does want to burn debris, contacting the local fire district or county sheriff’s office before scheduling anything is the right first call, since permit availability and any pile-size or seasonal limits are set locally rather than by the state rule alone.

Frequently Asked Questions

Does forestry mulching need a permit in Denver?

It depends on how much ground is disturbed and what the work is for, not on the machine itself. Mulching that stays well under an acre and is not tied to a larger construction project often sits below Denver’s state-permit trigger, while the same machine opening several acres for a build does not. The governing authority decides.

Who pays the permit fees?

The property owner or developer. Agency fees are never part of a Cut Brush quote, and we do not file permits on a customer’s behalf.

Does the Jefferson County threshold apply inside Denver too?

No. Jefferson County’s half-acre grading permit line applies to unincorporated Jefferson County. Inside Denver, the city’s own construction permitting and the state’s one-acre-and-above stormwater trigger are what apply instead.

Get the Sequence Straight Before the Machine Arrives

Paperwork changes your start date rather than our rate, and it is far cheaper to sort out before a machine is on a trailer.

See the full Denver service area on our Denver land clearing page, what the work itself costs on our Denver pricing guide, take the statewide view in the Colorado land clearing cost per acre guide, read what capability each method actually offers on our Denver services page, then request a free quote and we will walk the parcel with you.