Bolthole Index

Prowers County, Colorado

Zoning, building permits and septic rules in Lamar, Colorado

Inside Lamar, Colorado, the city's Building Department issues building permits for nearly all work except cosmetic jobs like painting1, and the city sets its own zoning districts2. Septic permits come from Prowers County Public Health and Environment, not the city3. Land outside city limits follows Prowers County's rules instead.

At a glance

Building permit
Required from the City of Lamar Building Department, except aesthetic work like painting1
Zoning
City zoning with residential, commercial and industrial districts4
Accessory dwelling (ADU)
Allowed in A-L, R-1, R-2 and R-3; conditional in M-H; up to 900 sq ft5
RV living on a residential lot
Not allowed; RV parks are conditional uses in some districts6
Short-term rental
Permitted in most districts, not in E-A, with a one-hour response rule7
Septic
Prowers County Public Health and Environment (confirm for city addresses)3
Flood zones
Lowest floor one foot above base flood elevation for new homes8

Who to call

Building permits

City of Lamar Building Department

Building permits, inspections and code enforcement inside Lamar

719-336-2085

102 E Parmenter St Lamar, CO 81052

Septic permits

Prowers County Public Health and Environment

Septic permits and approvals for Prowers County

336-8721

1001 S. Main, Lamar, CO

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

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Does Lamar, Colorado have zoning, and what does it mean for RVs, tiny homes and lot size?

Yes. The City of Lamar adopts its own zoning code for land inside city limits, with residential districts A-L, O-E, R-1, R-2, R-3, M-H and E-A, and commercial and industrial districts C-1, C-2, C-3, I-1, I-2 and I-P4.

An accessory dwelling unit in Lamar must sit on a permanent foundation with a kitchen, bathroom and sleeping area, and is capped at 900 square feet of habitable floor area5. ADUs are permitted in A-L, R-1, R-2 and R-3, conditional in M-H, and not permitted in O-E and E-A5.

Living in an RV on a residential lot in Lamar is not allowed, because the city code bars using such equipment for living, sleeping or housekeeping on a residential lot or any location not approved for it6. RV parks and campgrounds are conditional uses in R-3, M-H, C-2, C-3 and I-1 and need a 2 acre minimum site6.

Colorado allows Division of Housing-approved tiny homes for long-term living when local zoning also allows them9. We could not confirm how Lamar's zoning treats tiny homes, minimum lot sizes or setbacks, so ask the Community Development Office before you buy.

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

Yes. The City of Lamar Building Department issues building permits, and a permit is required except for aesthetic work such as painting or changing carpet1. The city code says no building or structure may be erected, moved, added to or structurally altered without one1.

A permit expires if work has not begun within 90 days of issuance1. Call the Building Department at 719-336-2085 for current submittal standards and the fee schedule1.

This is a city rule. Outside city limits, unincorporated Prowers County asks for a zoning permit from the Land Use Department instead, and the county says zoning permits are not building permits10.

How do septic permits work in Lamar?

Septic permits in Prowers County come from Prowers County Public Health and Environment, which the county's permitting guide lists as the office for septic3. The guide says building, repairing or modifying a structure, or replacing a septic system, may require its approval11.

We could not confirm the rules for septic systems or sewer connection for addresses inside Lamar city limits. Ask the City Building Department and Prowers County Public Health and Environment which applies to your lot before you rely on either. Wells are separate: every new Colorado well that diverts groundwater needs a state well permit12.

Can you live in an RV or tiny home on your land in Lamar?

An RV cannot be lived in on a residential lot in Lamar6. Parking is also limited on residential lots to a carport, an enclosed building or behind the nearest portion of a building to the street6.

Camping on city property requires written authorization from the city administrator and is limited to three days at one location13.

A permitted accessory dwelling of up to 900 square feet is the city's route to a second small home on a lot5. Short-term rentals are permitted in every district except E-A, and the owner or manager must answer neighbor complaints within one hour7.

Building a home in Lamar: the steps, in order

  1. Find the zoning district for your lot and check the use against the city's schedule of uses2.
  2. Check the flood map; in a special flood hazard area a new home's lowest floor must be one foot above base flood elevation8.
  3. Call the Building Department at 719-336-2085 to get the permit application and fee schedule1.
  4. If the lot is on US 287 or US 50, you need a CDOT access permit for new construction1.
  5. Ask Prowers County Public Health and Environment about septic approval if the lot is not on city sewer11.
  6. Start work within 90 days of permit issuance or the permit expires1.

What stays with Prowers County, and what to check before you buy in Lamar?

Septic approvals stay with Prowers County Public Health and Environment3. Land outside Lamar city limits is under Prowers County zoning, where a zoning permit with a $50 application fee is required before building14. Our Prowers County page covers the unincorporated rules.

Prowers County's effective property tax rate is 0.3% and the median bill is $494 a year1516. Annual precipitation averages 16.2 inches, so ask about water service and the city's current watering restrictions17.

Watch-outs

  • We could not confirm Lamar's minimum lot sizes, setbacks, minimum dwelling size or tiny-home rules; ask the City of Lamar Community Development Office or the Building Department1.
  • Properties on US 287 or US 50 need a state access permit from CDOT for new construction1.
  • Special flood hazard areas in Lamar require new homes to be elevated one foot above base flood elevation8.

Sources

  1. City of Lamar Building Department (cityoflamar.specialdistrict.org)
  2. Lamar Municipal Code Sec. 30-38 Schedule of uses (Lamar), quoted and re-checked
  3. Prowers County Permitting & Development Guide, quoted and re-checked
  4. Lamar Municipal Code Sec. 30-38 Schedule of uses (Lamar), quoted and re-checked
  5. Lamar Municipal Code Sec. 30-39 Review standards applicable to particular uses (Lamar), quoted and re-checked
  6. Lamar Municipal Code Sec. 30-84 Major recreational equipment (Lamar), quoted and re-checked
  7. Lamar Municipal Code Sec. 30-39 Review standards applicable to particular uses (Lamar), quoted and re-checked
  8. Lamar Municipal Code Sec. 12-14 Floodplain specific standards (Lamar), quoted and re-checked
  9. Consumers of Manufactured Homes and Tiny Homes - HUD (Colorado statewide rule), quoted and re-checked
  10. Zoning Regulations and Information, quoted and re-checked
  11. Prowers County Public Health and Environment (prowersco.gov)
  12. Water Administration (Colorado statewide rule), quoted and re-checked
  13. Lamar Municipal Code Sec. 20-77 Camping restrictions (Lamar), quoted and re-checked
  14. Zoning Regulations and Information, quoted and re-checked
  15. Effective property tax rate: Bolthole Index county data
  16. Median property tax bill: Bolthole Index county data
  17. Annual precipitation: 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 Lamar

Lamar’s own rules

  • Local zoningPresent

    Land inside Lamar city limits

    • Districts: A-L, O-E, R-1, R-2, R-3, M-H, E-A, C-1, C-2, C-3, I-1, I-2, I-P
    “tables 30 d and e, schedule of uses, specify the use standards applicable to development in the city's residential and commercial, business and industrial zone districts.”
  • Zoning districtsPublished

    Zone districts inside Lamar city

    • Residential: A-L, O-E, R-1, R-2, R-3, M-H, E-A; commercial/industrial: C-1, C-2, C-3, I-1, I-2, I-P
    • Ordinance 1283 dated 11-17-2025
    “tables 30 d and e, schedule of uses, specify the use standards applicable to development in the city's residential and commercial, business and industrial zone districts.”
  • Living in an RVLimited

    RV living on residential lots inside Lamar city

    • RV parks/campgrounds are conditional uses in R-3, M-H, C-2, C-3, I-1 with Sec. 30-39(d) standards (2 acre minimum site)
    • Parking on residential lots limited to carport, enclosed building or behind the nearest portion of a building to the street; 24 hours allowed for loading
    “no such equipment shall be used for living, sleeping or housekeeping purposes when parked or stored on a residential lot or in any location not approved for such use.”
  • Camping on your landLimited

    Camping inside Lamar city

    • Camping on city property requires written authorization from the city administrator, max three days at one location
    • Camping defined to include temporary or permanent occupancy of RVs, tents and similar structures
    “it is unlawful for any person to camp upon private property without first receiving written authorization from the owner or owner's agent.”
  • Accessory dwellingsAllowed (with conditions)

    Accessory dwelling units inside Lamar city

    • Table 30-D: permitted in A-L, R-1, R-2, R-3; conditional in M-H; not permitted in O-E and E-A
    • One per lot on a permanent foundation with kitchen, bathroom and sleeping area
    • Max 900 sq ft habitable floor area
    • One additional off-street parking space
    • Not condominiumized or sold; not rented under 30 days; max two occupants
    • Must have alley or public right-of-way access
    • Utility connections determined by the city or provider

    maximum ADU floor area: <= 900 sq ft

    “only one accessory dwelling unit is allowed per lot on a permanent foundation and must include a kitchen, bathroom, and sleeping area.”
  • Building in a floodplainRequired

    Development in special flood hazard areas inside Lamar city

    • Applies where base flood elevation data has been provided
    • Nonresidential may instead be floodproofed with engineer certification
    • Floodway encroachments prohibited without no-rise certification (Sec. 12-15)
    • RVs in A zones must be on site under 180 days, highway-ready, or meet manufactured home standards

    elevation above base flood elevation: >= 1 foot

    “new construction and substantial improvement of any residential structure shall have the lowest floor (including basement), electrical, heating, ventilation, plumbing, and air conditioning equipment and other service facilities (including ductwork) elevated to one foot above the base flood elevation.”
  • Short-term rentalsLimited

    Short-term rentals inside Lamar city

    • Permitted in A-L, O-E, R-1, R-2, R-3, M-H; not permitted in E-A per Table 30-D
    • Owner or manager must respond to neighbor complaints within one hour
    • Must not create nuisances such as noise, lighting, trash or parking
    “owner or property manager must be able to respond to any neighbor complaints within one hour.”

Still unanswered

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

  • Building permit — Building permits inside Lamar city
  • Owner-builder exemption — Owner-builder exemption inside Lamar city
  • Inspections — Building inspections inside Lamar city
  • Certificate of occupancy — Certificates of occupancy inside Lamar city
  • Minimum dwelling size — Minimum dwelling size in R-1 and other districts
17 more unanswered
  • Minimum lot size
  • Setbacks
  • Lot coverage
  • Building height
  • Tiny homes
  • Manufactured homes
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Subdividing land
  • Driveway access
  • Permit fees
  • 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 Lamar publishes no rule on the point, not that none exists. Prowers County’s page lists the county offices to call.

← All of Prowers County: county rules, score and offices