Mancos, CO Zoning, Building Permits & Septic Rules

The Town of Mancos, Colorado, in Montezuma County, zones its own land through its Land Use Code¹ and runs a Building Department that handles building permit applications and inspections². Living in an RV is allowed inside town only in an approved RV park³. Septic permits are a separate question handled through the county health office; we could not confirm how that works inside town limits⁴.

At a glance

Zoning: Yes. The town administers its own Land Use Code through a Zoning Administrator¹
Building permits: Town Building Department handles permit applications and inspections²
RV living: Only in an RV park, with a stay limit of 180 days per site³
Manufactured homes: Allowed if they meet town standards; older mobile homes cannot be moved in⁵
Accessory dwellings: Allowed by right in single-family districts⁶
Septic: Montezuma County Environmental Health permits septic systems countywide; town-limit details unconfirmed⁴
Electrical and plumbing: Permitted and inspected by the State of Colorado, not the town²

Who to call

Building permits

Town of Mancos Building Department

Planning and zoning, building permits and inspections, and code enforcement inside Mancos town limits

(970) 533-7725

117 N Main, Mancos, CO 81328

Septic permits

Montezuma County Environmental Health

Septic system applications and permits for Montezuma County

(970) 564-4763

Montezuma County Annex, 106 West North, Cortez, CO 81321

Contact details are copied from each office’s official page and were checked against it on October 16, 2026.

Off-grid gear

Going off-grid in Town of Mancos means bringing your own water and power. The kit we’d start with:

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Does Mancos, CO have zoning, and what does it mean for RVs and tiny homes?

Yes. The Town of Mancos administers zoning through Chapter 16 of its Land Use Code, with a Zoning Administrator¹. Permitted accessory uses are set by zone district in the code's accessory-use table¹.

RV living inside Mancos is tightly limited: the code allows an RV for human habitation only in an RV park, and an RV park needs a minimum of 3 acres and an approved site plan review³. A stay is capped at 180 days, with a move to another site allowed for another 180 days in any twelve-month period, then a thirty-day cooling-off period³. Parking an RV on a private lot to live in is not what the code describes.

Manufactured homes must meet skirting, tie-down and HUD-standard requirements, with a finished floor no more than 24 inches above grade⁵. Older mobile homes that do not meet the manufactured-home definition cannot be moved into town⁵. We found no tiny-home provision in the town sections we reviewed, so ask the Building Department before planning one; Colorado's Division of Housing does certify tiny homes for long-term living when local zoning also allows them⁷.

Do you need a building permit in Mancos, and who issues it?

The Town of Mancos runs its own Building Department, which handles building permit applications, building inspections, planning and zoning, and code enforcement in one office². Inside town limits, that is the office to call, not Montezuma County. We could not confirm the town's exact permit thresholds or which projects are exempt, so call (970) 533-7725 before starting any project².

Electrical and plumbing work is different. The town does not inspect it; those permits and inspections come from the State of Colorado, and a contractor you hire is responsible for pulling them².

How do septic permits work in Mancos?

Colorado requires a permit before anyone constructs, alters or installs an on-site wastewater system, and the permit comes from the local public health agency⁸. In Montezuma County that agency is Montezuma County Environmental Health, which reviews septic applications and awards permits⁴⁹.

Whether a lot inside Mancos is on town sewer or needs its own septic system, we could not confirm. Ask the Town of Mancos Building Department about sewer connection first, and Environmental Health at (970) 564-4763 if the lot would need its own system⁹. Soils matter too: across Montezuma County about 15% of soils rate as not limited for a conventional drain field, so many sites need a site evaluation or an engineered system¹⁰.

What about floodplain rules in Mancos?

In special flood hazard areas with a mapped base flood elevation, new residential construction inside town must have its lowest floor, including any basement, elevated 1 foot above base flood elevation¹¹. The lowest floor must be certified by a Colorado professional engineer, architect or land surveyor to the town's Floodplain Administrator¹¹. RVs in the mapped flood zones must be on site under 180 consecutive days and be highway-ready, or meet manufactured-home requirements¹¹.

Can you build accessory buildings and second homes on a Mancos lot?

Accessory dwelling units are permitted by right in Mancos's single-family zone districts and need a special use permit in the multifamily and mixed-use districts⁶. The owner must live in the main or accessory unit at least six months a year and record an owner-occupancy deed restriction with the Montezuma County Recorder⁶. Only one ADU is allowed per residential lot, it cannot be sold separately, and the lot must be at least 3,000 square feet⁶.

Sheds and garages have their own limits. Accessory buildings may not be in a required setback or within 5 feet of another building¹², though buildings up to 600 square feet may sit in side and rear setbacks if they are at least 5 feet from the property line and clear of easements¹². Accessory structures top out at 20 feet and can never be taller than the main building¹³.

Building a home in Mancos: the steps, in order

Look up the zone district for the lot with the town's zoning map and read the Land Use Code for that district¹.
Ask the Building Department for a pre-application meeting at (970) 533-7725 to confirm which approvals the project needs².
Check the flood map; a lot in a mapped flood zone needs an elevated floor and a certified elevation¹¹.
Confirm sewer service with the town, or apply to Montezuma County Environmental Health for a septic permit if the lot needs its own system⁹.
Hire licensed electrical and plumbing contractors, who pull the State of Colorado permits².

What stays with Montezuma County, and what to check before you buy near Mancos?

The county's own rules do not apply inside Mancos. They cover unincorporated land: Montezuma County's Land Use Code applies to all land in the unincorporated areas¹⁴, and the county does not enforce residential building codes there¹⁵. If the parcel you are looking at lies outside town limits, use the Montezuma County page instead.

Countywide, septic stays with the county health office⁴. Property tax runs at an effective rate of 0.3% in Montezuma County, with a median bill of $915 a year¹⁶¹⁷.

Watch-outs

We could not confirm Mancos's exact building permit thresholds, minimum lot sizes or setbacks by district; call the Town of Mancos Building Department at (970) 533-7725 before you buy or plan a build².
An RV is allowed for human habitation in Mancos only in an approved RV park, so living in one on a private lot is not an option the code describes³.
Septic and sewer arrangements for lots inside town limits are unconfirmed; ask Montezuma County Environmental Health and the town before you close⁹.

Sources

Written October 16, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Unanswered questions are usually a sign that Town of Mancos publishes no rule on the point, not that none exists. Montezuma County’s page lists the county offices to call.

Zoning, building permits and septic rules in the Town of Mancos, Colorado