Bolthole Index

Weld County, Colorado

Zoning, building permits and septic rules in Dacono, Colorado

Dacono, Colorado (Weld County) requires a building permit for most work inside city limits and adopts its own zoning in Chapter 16 of its municipal code12. Permit applications go through Dacono City Hall3. Living in an RV on a lot is not allowed outside a trailer court4. We could not confirm who issues septic permits inside the city, so ask Weld County Environmental Health Services.

At a glance

Building permit
Required for most work; sheds up to 120 sq ft and fences up to 6 ft are exempt1
Building code
2024 International Building Code with local amendments5
Zoning
City zoning in Chapter 16 of the Dacono Municipal Code2
RV living
Only in a trailer court or camp of 10 or more units4
Accessory dwelling unit
Allowed in residential districts, one per lot6
Septic
Not confirmed inside city limits; Weld County Environmental Health Services handles septic permits in the county7

Who to call

Building permits

City of Dacono Department of Community Development

Building permit applications, plan submittals and payments, plus planning and zoning, inside Dacono

303-833-2317

512 Cherry Ave

Septic permits

Weld County Environmental Health Services (septic)

Septic permits, site evaluations and inspections for Weld County

(970) 400-6415

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

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Do you need a building permit in Dacono, Colorado?

Yes, for most work. Dacono adopts the International Building Code, 2024 edition, with local amendments as the City of Dacono Building Code5. Under the city's amended exemptions, one-story detached sheds and playhouses up to 120 square feet with a roof height of 10 feet or less need no permit, and neither do fences up to 6 feet1. Starting work without a permit may bring an investigation fee1. A certificate of occupancy is required for an accessory dwelling unit, and only after the main house has one8. We could not confirm the city's owner-builder rules or permit fees, so ask the Department of Community Development.

Who issues building permits in Dacono, and how do you reach them?

The City of Dacono contracts with SafeBuilt Colorado for building department services3. Applications, plan submittals and payments still go through the Department of Community Development at Dacono City Hall, 512 Cherry Ave, phone 303-833-23173. Certain plan submittals go directly to the Mountain View Fire Protection District and the St. Vrain Sanitation District3. Weld County's Building Division serves unincorporated land only, so a lot inside Dacono does not go to the county counter9.

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

Dacono zones land itself under Chapter 16 of its municipal code, with districts including A, RR-1, R-1, R-2, M-H, C-R and PUD2. In the RR-1 rural residential district, lots run from 1 acre to a maximum of 5 acres10. Minimum dwelling size is 840 square feet in R-1, 780 square feet for a one-family home in R-2 and 860 in RR-1111213. RR-1 setbacks are 30 feet front, 15 feet side and 25 feet rear, with a 25-foot height limit1415. In the A agricultural district, front, side and rear yards are each 25 feet and structures top out at 30 feet1617. Manufactured housing must sit on an engineered permanent foundation18. We found no general tiny-home rule in the city code; ask Community Development.

Can you live in an RV in Dacono?

Not on an ordinary lot. A travel trailer, camper or motor home may be maintained as a residence in a trailer court or camp with sanitary facilities for 10 or more units4. Temporary RV parking needs a special use permit, only in the I-1 or COS districts, with an event permit and a limit of 3 consecutive days19. Outside city limits the rules change: unincorporated Weld County allows a temporary RV stay during construction on Agricultural land with a zoning permit20.

How do septic permits work in Dacono?

We could not confirm who issues septic permits for addresses inside Dacono city limits. Colorado requires a permit from the local public health agency before an on-site wastewater system is built or altered21. Weld County Environmental Health Services runs septic permitting in the county, and its stated policy is to require public sewer where feasible and limit septic to areas where sewer is not feasible22. A new home inside the city may therefore be expected to connect to public sewer; the St. Vrain Sanitation District takes some plan submittals3. Call Weld County Environmental Health Services at (970) 400-641523, and the city, before you plan any septic system.

Building a home in Dacono: the steps, in order

  1. Confirm the zoning district of the lot with Dacono's Department of Community Development2.
  2. Check the district's minimum floor area and setbacks before drawing plans24.
  3. Apply for the building permit through Dacono City Hall; sanitation district and fire district reviews may go direct3.
  4. Confirm sewer or septic with the St. Vrain Sanitation District or Weld County Environmental Health Services23.
  5. Build to the 2024 International Building Code as amended by the city5.
  6. Obtain final approval and certificate of occupancy before moving in8.

What to check before you buy land in or near Dacono

Confirm the parcel is inside city limits, because county and city rules differ. Weld County's septic permits, floodplain and highway-access rules, and its building code, apply outside the city25. Colorado requires an access permit for a driveway onto a state highway26. Any new well needs a state well permit27, though we could not confirm well rules inside the city. For wider context, see Weld County.

Watch-outs

  • Search results often show Weld County's rules, but those cover unincorporated land only; inside Dacono, the city's code applies28.
  • Starting work without a permit may bring an investigation fee1.
  • We could not confirm septic, well, fee or owner-builder rules inside the city; call Community Development and Weld County Environmental Health Services23.

Sources

  1. Dacono Code Sec. 18-40 Codes adopted; scope (Dacono), quoted and re-checked
  2. Dacono Code Sec. 16-602 ADU standards and requirements (Dacono), quoted and re-checked
  3. City of Dacono Department of Community Development (cityofdacono.com)
  4. Dacono Code Sec. 18-110 Restrictions (Dacono), quoted and re-checked
  5. Dacono Code Sec. 18-40 Codes adopted; scope (Dacono), quoted and re-checked
  6. Dacono Code Sec. 16-602 ADU standards and requirements (Dacono), quoted and re-checked
  7. Environmental Health Services, quoted and re-checked
  8. Dacono Code Sec. 16-602 ADU standards and requirements (Dacono), quoted and re-checked
  9. Building Permit Applications and Inspections, quoted and re-checked
  10. Dacono Code Sec. 16-243 Minimum-maximum lot areas (RR-1) (Dacono), quoted and re-checked
  11. Dacono Code Sec. 16-102 Floor area (R-1) (Dacono), quoted and re-checked
  12. library.municode.com (Dacono), quoted and re-checked
  13. Dacono Code Sec. 16-245 Floor area, height and yard requirements (RR-1) (Dacono), quoted and re-checked
  14. library.municode.com (Dacono), quoted and re-checked
  15. Dacono Code Sec. 16-245 Floor area, height and yard requirements (RR-1) (Dacono), quoted and re-checked
  16. library.municode.com (Dacono), quoted and re-checked
  17. Dacono Code Sec. 16-273 General specifications (A) (Dacono), quoted and re-checked
  18. Dacono Code Sec. 18-100 Definitions (Dacono), quoted and re-checked
  19. Dacono Code Sec. 16-383 Temporary recreational vehicle parking (Dacono), quoted and re-checked
  20. Current Planning, quoted and re-checked
  21. Title 25 - Public Health and Environment - Colorado Revised Statutes 2024 (Colorado statewide rule), quoted and re-checked
  22. Septic Systems (On-site Wastewater Treatment Systems), quoted and re-checked
  23. Weld County Environmental Health Services (septic) (weld.gov)
  24. Dacono Code Sec. 16-602 ADU standards and requirements (Dacono), quoted and re-checked
  25. Building Codes, Design Criteria and Fees, quoted and re-checked
  26. Access Permits | Frequently Asked Questions (Colorado statewide rule), quoted and re-checked
  27. Water Administration (Colorado statewide rule), quoted and re-checked
  28. Weld County Commissioners approve updates to zoning code, quoted and re-checked

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 Dacono

Dacono’s own rules

  • Building permitRequired

    Building work inside Dacono city

    • IBC 105.2 exemptions are locally amended: one-story detached sheds/playhouses up to 120 sq ft and 10 ft roof height; fences up to 6 ft; shingle repair up to 100 sq ft.
    • Starting work without a permit may bring an investigation fee.

    shed exemption floor area: <= 120 sq ft (roof height not over 10 ft)

    “One-Story detached accessory structures used as tool and storage sheds, playhouses and similar uses, provided the floor area does not exceed 120 square feet and the roof height does not exceed 10 feet above grade measured from a point directly outside the exterior walls of the structure.”
  • Building code adoptedAdopted (with conditions)

    Construction inside Dacono city

    • Adopted by reference with local amendments; IBC 2024 Edition is adopted as the City of Dacono Building Code.

    International Building Code edition: 2024 (with local amendments)

    “the international building code, 2024 edition, as published by the international code council, 4051 west flossmoor road, country club hills, il 60478, chapters 1 through 35 inclusive and appendix chapter i and n, is hereby adopted by reference as the city of dacono building code”
  • Certificate of occupancyRequired

    Accessory dwelling units inside Dacono city (code text seen only for ADUs; general rule not opened)

    • ADU certificate only after the principal dwelling has one.
    “A certificate of occupancy will only be granted to an accessory dwelling unit after a certificate of occupancy has been granted to the principal dwelling unit.”
  • Local zoningPresent (with conditions)

    Land inside Dacono city limits

    • Zoning is in Chapter 16 of the Dacono Municipal Code, with districts including A, RR-1, R-1, R-2, M-H, C-R and PUD.
    “in all residential zone districts (A, RR-1, R-1, R-2, M-H, C-R and PUD zone districts with residential uses)”
  • Zoning districtsPublished (with conditions)

    Zoning districts inside Dacono city

    • Districts named in the code include A, RR-1, R-1, R-2, M-H, C-R, PUD, I-1 and COS; full district map not opened.
    “in all residential zone districts (A, RR-1, R-1, R-2, M-H, C-R and PUD zone districts with residential uses)”
  • Minimum dwelling sizeSpecified

    R-1 Residential District, per dwelling unit

    • Exclusive of porches and garages.

    minimum floor area: >= 840 sq ft

    “Minimum floor area per dwelling unit exclusive of porches and garages in the R-1 district shall be eight hundred forty (840) square feet.”
    2 more reviewed findings on this topic
  • Minimum lot sizeSpecified

    RR-1 Rural Residential District

    • Maximum lot area is 5 acres.

    minimum lot area: >= 1 acre · maximum lot area: <= 5 acres

    “minimum and maximum lot areas of a lot in the rr-1 district shall be as follows: (1) minimum one (1) acre; (2) maximum five (5) acres.”
  • SetbacksSpecified

    R-1 Residential District, principal building

    • Accessory building front yard 35 ft (except attached garage); side yard 3 ft for accessory buildings.
    • Side yard 12 ft on one side if original plans include no garage or carport; corner-lot yards differ.
    • Rear yard not seen.

    front yard: >= 15 ft · side yard: >= 5 ft (12 ft one side if no garage/carport)

    “Minimum front yards in the R-1 district shall be as follows: (1) Principal building, fifteen (15) feet;”
    2 more reviewed findings on this topic
    • Specified — RR-1 Rural Residential District
      “minimum setback from any side lot line to nearest structure, fifteen (15) feet; (3) minimum setback from rear lot line to nearest structure, twenty-five (25) feet;”
    • Specified — A Agricultural District
      “(c) setback requirements: (1) front yard: twenty-five (25) feet. (2) side yard: twenty-five (25) feet. (3) rear yard: twenty-five (25) feet. (4) stables and corrals: fifty (50) feet from all property lines.”
  • Building heightSpecified

    RR-1 Rural Residential District

    • Principal and accessory buildings each 25 ft.

    maximum building height: <= 25 ft

    “(4) maximum building height: a. principal building, twenty-five (25) feet, b. accessory building, twenty-five (25) feet;”
    One more reviewed finding on this topic
  • Living in an RVLimited

    Using an RV, travel trailer, camper or motor home as a residence inside Dacono city

    • Allowed in a trailer court or camp equipped with sanitary facilities for ten or more units.
    • Non-residential use related to construction is allowed only until construction is complete.

    minimum units for trailer court: >= 10 units

    “a travel trailer, camper, camper bus or motor home may be maintained in a trailer court or camp equipped with proper sanitary and other facilities for the use of the inhabitants of such travel trailers, campers, camper buses and motor homes, and maintained for the use of ten (10) or more such travel trailers, campers, camper buses and motor homes.”
  • Camping on your landLimited

    Temporary RV parking/overnight sleeping inside Dacono city

    • Special use permit only in I-1 or COS districts, and only with an event permit.
    • Max 3 consecutive days; RVs only; no tent camping or tiny homes; no open fires; no storage.

    maximum consecutive days: <= 3 days

    “Special use permits for temporary recreational vehicle parking shall only be issued for property located within the light industrial (I-1) or civic and open space (COS) zone districts.”
  • Manufactured homesLimited

    Pre-manufactured/mobile homes inside Dacono city

    • Must be on an engineered permanent foundation and meet HUD or UBC standards.
    • Pre-manufactured housing subdivisions are zoned under Article 5 of Chapter 16; manufactured homes are barred as ADUs.
    “pre-manufactured housing structure means a transferable, single-family residential structure which is suitable for year-round occupancy, which contains the same water supply, waste disposal and electric conveniences as non-pre-manufactured housing dwelling units, is permanently affixed to and installed on an engineered, permanent foundation, which may be transported to a site as one (1) or more modules, which complies with hud or ubc standards”
  • Accessory dwellingsAllowed (with conditions)

    ADUs on single-family detached lots in residential districts inside Dacono city

    • One ADU per lot; owner must reside on the parcel unless built with the principal dwelling.
    • Min 200 sq ft; max 850/1,000/1,200 sq ft by lot size; no manufactured homes or RVs; max 2 bedrooms.
    • Must connect to principal dwelling's water and wastewater; short-term rental prohibited.

    minimum ADU floor area: >= 200 sq ft

    “Accessory dwelling units are permitted as an accessory use to single-family detached dwellings in all residential zone districts”
  • Subdividing landRegulated (with conditions)

    Subdividing lots inside Dacono city

    • Subdivision approval is under Chapter 17 of the Dacono Code; Chapter 17 not opened.
    “nor shall the lot on which it is located be subdivided unless such Subdivision is approved pursuant to Chapter 17 of this Code.”
  • Short-term rentalsLimited

    Short-term rental of ADUs inside Dacono city; rules for other dwellings not found

    • Applies to rentals under thirty days of an ADU.

    short-term rental threshold: < 30 days (prohibited for ADUs)

    “Short-term (fewer than thirty (30) days) rental of an ADU is prohibited.”

Still unanswered

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

  • Owner-builder exemption — Owner-builders inside Dacono city
  • Inspections — Inspections inside Dacono city
  • Lot coverage — Lot coverage inside Dacono city
  • Tiny homes — Tiny homes inside Dacono city
  • Who permits septic — Septic systems inside Dacono city
9 more unanswered
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • 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 Dacono publishes no rule on the point, not that none exists. Weld County’s page lists the county offices to call.

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