Bolthole Index

Weld County, Colorado

Zoning, building permits and septic rules in Evans, Colorado

The City of Evans, in Weld County, Colorado, zones land under its own Title 18 Land Development Code1 and builds under the 2018 International Residential Code with local amendments2. Living in a stored RV is barred except one 7-day guest camping tag per quarter3. Septic permits inside Evans were not confirmed; Weld County Environmental Health Services handles septic countywide4.

At a glance

Zoning
Evans zones its own land under Title 18 with zone districts1
Building code
2018 International Residential Code with local amendments2
Inspections
Required, including an added insulation inspection5
RV living
Barred in a stored RV except one guest camping tag per quarter, up to 7 consecutive days3
Floodplain
Lowest floor 36 inches above base flood elevation in flood hazard areas6
Septic
Weld County Environmental Health Services runs septic permits countywide; confirm for your Evans address4

Who to call

Building permits

City of Evans Building Division

Building code interpretation, plan review and inspections for construction inside Evans city limits

970-475-1110

1100 37th Street Evans, Colorado 80620

Zoning

City of Evans Planning Division

Zoning, annexation, site plans, special use permits, subdivisions and variances inside Evans city limits

(970) 475-1167

planning@evanscolorado.gov

Septic permits

Weld County Environmental Health Services (septic)

Septic (on-site wastewater treatment system) permits and inspections in Weld County

(970) 400-6415

1150 O St. Greeley, CO 80631

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 Evans means bringing your own water and power. The kit we’d start with:

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Does Evans, Colorado have zoning, and what does it mean for RVs and lots?

Yes. The City of Evans regulates land inside its limits through Title 18, a Land Development Code with zone districts1. Lot standards depend on the building types each zone district permits1. The City of Evans Planning Division is the first stop for zoning, annexation, site plans and variances7.

RV living is tightly limited. A stored RV on residential property inside Evans may not be lived in, except one guest camping tag per quarter, for up to 7 consecutive days3. The City Manager may grant one one-week extension per 365 days, and no wastewater may go into the city sanitary sewer3. Camping on public property in Evans is prohibited8. Small-format home communities (RMH) are limited to 25 feet of building height9; we did not confirm height limits in other districts.

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

The City of Evans Building Division handles plan review and inspections for construction inside Evans, and the city adopted the 2018 International Residential Code as its Residential Building Code210. The Building Division states it follows the 2018 I-Codes along with the 2023 NEC10. Inspections are required, and a local amendment adds an insulation inspection before wall coverings go up5.

We did not confirm the city's certificate of occupancy rules, owner-builder rules or permit fees for Evans; ask the Building Division at 970-475-111010. Weld County's building permits apply only to unincorporated land; see the Weld County page for land outside city limits.

How do septic permits work inside Evans?

We could not confirm who permits septic systems for lots inside Evans city limits. Weld County Environmental Health Services administers septic permitting, site evaluations and inspections for systems under 2,000 gallons per day countywide4. The county's stated policy is to require public sewer wherever feasible and to limit septic systems to areas where public sewer is not feasible11.

In practice, ask first whether your Evans address can connect to city sewer. Call Weld County Environmental Health Services at (970) 400-6415 to confirm the septic rule for your address12. Well permits inside Evans were not confirmed either.

Building a home in Evans: the steps, in order

  1. Confirm the zone district for your lot with the Planning Division at (970) 475-11677.
  2. Check whether the lot touches a flood hazard area; in one, the lowest floor must sit 36 inches above base flood elevation, certified by a Colorado engineer, architect or land surveyor6.
  3. Ask Weld County Environmental Health Services about sewer or septic for your address12.
  4. Apply for the building permit with the Building Division, which follows the 2018 I-Codes10.
  5. Request inspections, including the insulation inspection added by Evans5.

Note that front driveway access is prohibited for any lot served by an alley13.

What stays with Weld County, and what to check before you buy in Evans

Land outside Evans city limits falls under unincorporated Weld County rules, which differ from the city's; start at the Weld County page. Subdivision proposals in Evans must be reasonably safe from flooding14. Weld County's effective property tax rate is 0.5%15, and a typical home value in the county is $498,22316. Septic and any well questions should go to the county offices named above12.

Watch-outs

  • An RV is not a place to live in Evans: only one guest camping tag per quarter, up to 7 consecutive days, is allowed on residential property3.
  • Do not use Weld County's unincorporated-area rules for an address inside Evans; the city sets its own zoning and building code12.
  • We could not confirm septic, well, tiny home and accessory dwelling rules inside Evans; call the Planning Division at (970) 475-1167 and Weld County Environmental Health Services at (970) 400-6415712.

Sources

  1. Evans Municipal Code 18.05.020 Lot creation (residential) (Evans), quoted and re-checked
  2. Evans Municipal Code 15.09.010 International Residential Code adopted (Evans), quoted and re-checked
  3. Evans Municipal Code 8.27.030 Storage and parking regulations (Evans), quoted and re-checked
  4. Environmental Health Services, quoted and re-checked
  5. Evans Municipal Code 15.09.010 International Residential Code adopted (Evans), quoted and re-checked
  6. Evans Municipal Code 16.04.200 Specific standards for construction in special flood hazard areas (Evans), quoted and re-checked
  7. City of Evans Planning Division (evanscolorado.gov)
  8. Evans Municipal Code 9.31.030 Prohibited acts (Evans), quoted and re-checked
  9. Evans Municipal Code 18.05.080 Small format housing (Evans), quoted and re-checked
  10. City of Evans Building Division (evanscolorado.gov)
  11. Septic Systems (On-site Wastewater Treatment Systems), quoted and re-checked
  12. Weld County Environmental Health Services (septic) (weld.gov)
  13. Evans Municipal Code 18.05.030 Frontages (Evans), quoted and re-checked
  14. Evans Municipal Code 16.04.250 Standards for subdivision proposals (Evans), quoted and re-checked
  15. Effective property tax rate: Bolthole Index county data
  16. Typical home value (Zillow): Bolthole Index county data

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.

Answers from the rulebook for Evans

Evans’s own rules

  • Building code adoptedAdopted

    Residential construction inside Evans city (2018 IRC with local amendments)

    • Adopted 2018 IRC chapters 1-43 and Appendix H and M with local amendments
    • Other codes (IBC, energy) not reviewed

    IRC edition: 2018

    “is hereby adopted by reference as the City of Evans Residential Building Code as if fully set out in this Chapter”
  • InspectionsRequired

    Permitted residential construction inside Evans city

    • Local amendment adds an insulation inspection
    “Inspection of the structure shall be made following installation of the wall, ceiling and floor insulation and exterior windows and before wall coverings are installed.”
  • Local zoningPresent

    Land inside Evans city limits; Title 18 Land Development Code with zone districts

    “The residential lot standards shall be based on the different building types permitted in each zone district, as specified in Table 18-5-1, Residential & Lot Standards.”
  • Building heightDistrict specific (with conditions)

    Small-format home communities (RMH) inside Evans city; other districts not found

    RMH building height: <= 25 feet

    “Building height. Twenty-five (25) feet maximum.”
  • Living in an RVLimited

    RVs stored on residential property inside Evans city

    • Living in a stored RV is barred except one guest camping tag per quarter, up to 7 consecutive days
    • City Manager may grant one one-week extension per 365 days
    • No wastewater dumped into City sanitary sewer
    • RV must appear unoccupied otherwise

    guest camping tag duration: <= 7 consecutive days per quarter (one extension of one additional week per 365 days)

    “Each residential property shall be entitled to one (1) guest camping tag per quarter for a recreational vehicle for a period not to exceed seven (7) consecutive days.”
  • Camping on your landProhibited

    Camping on public property inside Evans city only; private-land camping is covered by the RV guest tag rule

    • Emergency occupancy of a motor vehicle up to 48 hours on public right-of-way or parking lot is excepted
    “Camping on public property, as defined in this Chapter, is prohibited.”
  • Subdividing landRegulated (with conditions)

    Subdivision proposals inside Evans city

    • Flood standards apply to every subdivision proposal
    • Full subdivision code not opened
    “All subdivision proposals including the placement of manufactured home parks and subdivisions shall be reasonably safe from flooding.”
  • Driveway accessLimited

    Residential lot driveways inside Evans city

    • Director may waive the alley rule
    • Driveway width limits by frontage type (15-50% of lot width)
    “Front driveway access is prohibited for any lot served by an alley.”
  • Building in a floodplainRequired

    Development in special flood hazard areas inside Evans city

    • Residential lowest floor 36 inches above base flood elevation
    • Nonresidential 18 inches
    • Elevation certified by Colorado PE, architect or surveyor

    residential freeboard: >= 36 inches above BFE

    “elevated to thirty-six (36) inches above the base flood elevation. Upon completion of the structure, the elevation of the lowest floor, including basement, shall be certified by a registered Colorado professional engineer, architect or land surveyor.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Evans or Weld County directly.

  • Owner-builder exemption — Owner-builder inside Evans city
  • Certificate of occupancy — Certificate of occupancy inside Evans city
  • Minimum dwelling size — Minimum dwelling size inside Evans city
  • Lot coverage — Lot coverage inside Evans city
  • Tiny homes — Tiny homes inside Evans city
9 more unanswered
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Agricultural exemption
  • Short-term rentals
  • Permit process

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

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

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