Bolthole Index

Douglas County, Colorado

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

Inside the Town of Parker, Colorado, the town's Land Development Ordinance sets zoning1, and the town's Building Division handles all building permits and inspections within incorporated Parker2. Septic permits for every address in Douglas County, town or not, come from the Douglas County Health Department3. Land outside town limits follows Douglas County's rules.

At a glance

Building permit
Required; issued by the Town of Parker Building Division2
Zoning
Yes, under the town's Land Development Ordinance1
Septic
Douglas County Health Department permits systems in all areas of the county3
Tiny homes
Allowed as single-family dwellings if they meet the town's building code or HUD standards4
Accessory dwellings
Prohibited in all districts under the town's ordinance5
Smallest lot (SF2)
5,000 sq ft6
Wells
State well permit required for a new well7

Who to call

Building permits

Town of Parker Building Division

Building permits and inspections inside incorporated Parker; applications are filed online through eTRAKiT

303.841.0353

20120 E Mainstreet, Parker, CO 80138

Septic permits

Douglas County Health Department

Septic (OWTS) permits, installation, repair and use in all areas of Douglas County, including inside Parker

720-643-2400

11045 E Lansing Circle, Third Floor, Englewood, CO 80112

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

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Does the Town of Parker have zoning, and what does it mean for homes and lots?

Yes. The Town of Parker zones land under its Land Development Ordinance, Title 13 of the municipal code1. Districts include SF1, SF2, SF3, MF, MN, C1 and AG8.

Lot size depends on the district. SF1 requires at least 8,000 square feet with an 80-foot lot width9. SF2 requires at least 5,000 square feet with a 55-foot width6. The AG district requires at least 10 acres, and the town also uses AG for recently annexed property until development zoning is approved10.

In SF1, setbacks are 25 feet in front, 10 feet on the side and 15 feet in the rear11, and buildings top out at 35 feet12. In AG, setbacks are 50 feet on every side13, with principal buildings limited to 35 feet and accessory buildings to 70 feet14.

Do you need a building permit in the Town of Parker, and who issues it?

Inside Parker's town limits, the Town of Parker Building Division handles all building permits and inspections2. Permit applications are filed online through eTRAKiT, and contractors call the office to set up an account2. Reach the division at 303.841.0353, 20120 E Mainstreet, Parker, CO 801382.

The Douglas County Building Division serves only unincorporated Douglas County, so a Parker address does not go to the county building counter15. We could not confirm Parker's permit fees, inspection steps, certificate of occupancy rules or owner-builder rules; ask the Parker Building Division.

Can you live in a tiny home, manufactured home or ADU in the Town of Parker?

Tiny homes are allowed as single-family dwellings in Parker when they comply with the town's adopted building code or are HUD-certified for Colorado climate and snow loads4. Modular and manufactured homes follow the same two construction standards16.

Accessory dwelling units are prohibited in all Parker districts under the town's ordinance5. A basement "secondary family space" that is not rented or locked off is defined as not an ADU5.

We could not confirm whether Parker allows living in an RV on private land; the only RV rule located limits parking on streets. Ask the Town of Parker before planning an RV stay.

How do septic permits work inside the Town of Parker?

The Douglas County Health Department permits the installation, repair and use of septic systems in all areas of Douglas County, which includes addresses inside Parker3. A septic permit is required for new installations, expansions and repairs, with some exceptions17. Call the department at 720-643-240018.

We could not confirm whether a given Parker address has public sewer or which district serves it; ask the Town of Parker. Across Douglas County, only about 9% of soils are rated "not limited" for a conventional drain field, so lots without sewer should expect a site evaluation and possibly an engineered system19.

Building a home in the Town of Parker: the steps, in order

  1. Confirm the lot's zoning district and its lot size, setbacks and height limits in the Land Development Ordinance8.
  2. Check the lot against flood hazard maps: development in a special flood hazard area inside Parker needs a floodplain development permit20.
  3. Settle sewer or septic. If the lot has no sewer, call the Douglas County Health Department for a septic permit17.
  4. If the lot has no public water, a new well needs a state well permit7.
  5. File the building permit application online with the Town of Parker Building Division2.
  6. Schedule inspections through the same division2.

What stays with Douglas County, and what to check before you buy in Parker

Land outside Parker's limits falls under unincorporated Douglas County, which has its own zoning resolution and building permits; see the Douglas County page21. Parker's rules apply only inside the town.

Douglas County's typical home value is $711,89422 and its effective property tax rate is 0.6%23. Typical annual home insurance runs about $3,42224. Those figures are county-level, not specific to Parker.

Watch-outs

  • Parker's accessory dwelling ban appears in the town's code, but we could not read every footnote, so ask the Town of Parker whether a state ADU law changes the answer for a specific lot5.
  • Septic permits for Parker addresses come from the Douglas County Health Department, not the town3.
  • We could not confirm Parker's building permit fees, owner-builder rules, driveway permits or private-land RV rules; call the Town of Parker Building Division2.

Sources

  1. Parker Municipal Code Title 13 - Land Development Ordinance (Municode) (Town of Parker), quoted and re-checked
  2. Town of Parker Building Division (parkerco.gov)
  3. Septic Systems, quoted and re-checked
  4. Parker Municipal Code Title 13 - Land Development Ordinance (Municode) (Town of Parker), quoted and re-checked
  5. Parker Municipal Code Title 13 - Land Development Ordinance (Municode) (Town of Parker), quoted and re-checked
  6. Parker Municipal Code Title 13 - Land Development Ordinance (Municode) (Town of Parker), quoted and re-checked
  7. Water Administration (Colorado statewide rule), quoted and re-checked
  8. Parker Municipal Code Title 13 - Land Development Ordinance (Municode) (Town of Parker), quoted and re-checked
  9. Parker Municipal Code Title 13 - Land Development Ordinance (Municode) (Town of Parker), quoted and re-checked
  10. Parker Municipal Code Title 13 - Land Development Ordinance (Municode) (Town of Parker), quoted and re-checked
  11. Parker Municipal Code Title 13 - Land Development Ordinance (Municode) (Town of Parker), quoted and re-checked
  12. Parker Municipal Code Title 13 - Land Development Ordinance (Municode) (Town of Parker), quoted and re-checked
  13. Parker Municipal Code Title 13 - Land Development Ordinance (Municode) (Town of Parker), quoted and re-checked
  14. Parker Municipal Code Title 13 - Land Development Ordinance (Municode) (Town of Parker), quoted and re-checked
  15. Residential – New Home Construction, quoted and re-checked
  16. Parker Municipal Code Title 13 - Land Development Ordinance (Municode) (Town of Parker), quoted and re-checked
  17. Septic System FAQs, quoted and re-checked
  18. Douglas County Health Department (douglasco.gov)
  19. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  20. Parker Municipal Code Title 13 - Land Development Ordinance (Municode) (Town of Parker), quoted and re-checked
  21. Zoning Resolution, quoted and re-checked
  22. Typical home value (Zillow): Bolthole Index county data
  23. Effective property tax rate: Bolthole Index county data
  24. Typical home insurance premium: 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 Town of Parker

Town of Parker’s own rules

  • Local zoningPresent

    Land inside Parker town limits

    • Adopted by Ord. 3.372 on May 20, 2024, replacing former Title 13
    “this title shall be known and may be cited as the parker land development ordinance or "ldo."”
  • Zoning districtsPublished

    Zoning districts inside Parker town (SF1, SF2, SF3, MF, MN, C1, AG, others)

    “the sf1 district is the lowest density residential district, with higher densities considered provided the impacts are comparable to other uses allowed in the district.”
  • Minimum lot sizeSpecified

    AG Agricultural district inside Parker town

    • Also used for recently annexed property until development zoning is approved

    minimum lot size: >= 10 acres

    “ag lot and building standards. lot standards lot size, minimum 10 acres lot width, minimum none”
    2 more reviewed findings on this topic
  • SetbacksSpecified

    AG Agricultural district inside Parker town

    • Restricted-lot protected-lot setback note applies to side setback

    front setback: >= 50 ft · side setback: >= 50 ft · rear setback: >= 50 ft

    “setbacks (minimum) front 50 feet side 50 feet [1] rear 50 feet”
    One more reviewed finding on this topic
  • Building heightSpecified

    AG Agricultural district inside Parker town

    • Within 50 ft of a protected lot on restricted lots, no portion may exceed 35 ft

    principal building height: <= 35 ft · accessory building height: <= 70 ft

    “building height, principal 35 feet building height, accessory 70 feet [2]”
    One more reviewed finding on this topic
  • Tiny homesAllowed (with conditions)

    Tiny homes as single-family dwellings inside Parker town

    • Must comply with the Town's adopted building code or be HUD-certified for Colorado climate and snow loads
    “this use shall include modular homes, manufactured homes, and tiny homes that comply with either of these construction standards.”
  • Manufactured homesAllowed (with conditions)

    Manufactured and modular homes as single-family dwellings inside Parker town

    • Must comply with the Town's adopted building code or HUD standards for Colorado climate and snow loads
    “this use shall include modular homes, manufactured homes, and tiny homes that comply with either of these construction standards.”
  • Accessory dwellingsProhibited

    Accessory dwelling units in all zoning districts inside Parker town

    • Footnote [3] on the section was not read; state ADU law may affect this
    • A basement 'secondary family space' that is not rented or locked off is defined as not an ADU (11.02.050)
    “accessory dwelling units are prohibited in all districts.”
  • Building in a floodplainRequired

    Development in special flood hazard areas inside Parker town

    • Applies only within a special flood hazard area (SFHA); regulations are in LDO 13.08.040(a)
    “floodplain development permit means a permit required before construction or development begins within any special flood hazard area (sfha) pursuant to section 13.08.040 (a), floodplain regulations.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Town of Parker or Douglas County directly.

  • Owner-builder exemption — Owner-builder permits inside Parker town
  • Inspections — Inspections inside Parker town
  • Certificate of occupancy — Certificate of occupancy inside Parker town
  • Minimum dwelling size — Minimum dwelling size inside Parker town
  • Lot coverage — Lot coverage in SF1/SF2/AG inside Parker town
13 more unanswered
  • Living in an RV
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Subdividing land
  • Driveway access
  • Short-term rentals
  • 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 Town of Parker publishes no rule on the point, not that none exists. Douglas County’s page lists the county offices to call.

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