Bolthole Index

Hamilton County, Tennessee

Zoning, building permits and septic rules in Collegedale, Tennessee

Collegedale, Tennessee (Hamilton County) enforces its own zoning inside city limits1, and its Building & Codes Department requires a permit before any work starts2. Septic permits for property inside Collegedale come from Hamilton County Groundwater Protection, not the city3. We could not confirm the city's owner-builder rules, so ask Building & Codes before you buy.

At a glance

Zoning
Yes, the city zones land inside city limits1
Building permit
Issued by the city's Building & Codes Department; permit must come before work starts2
Building code
2018 International Residential Code, with local amendments4
Septic
Hamilton County Groundwater Protection approves septic systems; the city allows them as an exception to its sewer rule3
RV living
RV parks and camping grounds only by Board of Zoning Appeals approval in the AG district5
Minimum lot, AG district
1 acre with public water, 2 acres without6

Who to call

Building permits

City of Collegedale Building & Codes Department

Building permits, plan review and code enforcement inside Collegedale city limits

(423) 468-1967

amorkert@collegedaletn.gov

5225 Innovation Drive

Zoning

City of Collegedale Planning & Zoning

Zoning questions, rezoning requests and subdivision plats inside Collegedale city limits

423-468-1967

Septic permits

Hamilton County Groundwater Protection (Development Services)

Septic system permits, lot reviews, septic repairs and well/spring water testing for unincorporated Hamilton County

423-209-7876

1250 Market Street Suite 3046, Chattanooga, TN 37402

Contact details are copied from each office’s official page and were checked against it on October 24, 2026.

Off-grid gear

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

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

Yes. Collegedale divides land inside city limits into zoning districts, and land and structures must conform to the regulations of the district where they sit1. Districts are shown on the Official Zoning Map, with certified copies kept in the Office of the Zoning Official7. The rules below apply inside the city, not to unincorporated Hamilton County.

AG Agricultural District. The minimum lot is 1 acre with public water and 2 acres without6. Permitted nonagricultural uses may cover no more than 30% of the land8. Rear yards are at least 20 feet, and front yards are at least 50 feet on major thoroughfares and collectors or 35 feet on local streets9. Height is limited to 30 feet10.

R-1-L Low Density Single-Family Residential. A lot on a well and septic tank needs 43,560 square feet; a lot on public water and septic needs 25,000 square feet; a lot on sanitary sewer needs 15,000 square feet11. Setbacks are 35 feet front, 25 feet rear and 10 feet on the side for one- to two-story buildings12. Structures may cover 40 percent of the lot13.

RVs and manufactured homes. Recreational vehicle parks and camping grounds in the AG district require Board of Zoning Appeals approval5. Manufactured-home parks are permitted in R-3 and by Board of Zoning Appeals approval in U-114. We could not confirm a city rule on tiny-home occupancy, so ask Planning & Zoning before you plan one15.

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

The City of Collegedale Building & Codes Department handles building permits inside city limits, and its page states that a permit must be issued before work begins or the fee doubles2. New dwellings are built under the 2018 International Residential Code with local amendments4. The department also enforces the city's property maintenance and zoning codes2.

Hamilton County Building Inspections serves unincorporated land and any municipal areas that have not adopted and enforce their own codes16. Because Collegedale adopts its own residential code, start with the city office, not the county counter. We could not confirm the city's general permit fee schedule, owner-builder rules or certificate-of-occupancy rules, so ask Building & Codes directly2.

How do septic permits work inside Collegedale?

Septic permits for property inside Collegedale come from Hamilton County, not the city. The city code treats discharge outside its sewer system as a nuisance, with an exception for a properly functioning septic system approved by the Hamilton County Division of Groundwater Protection3. Where sewer is available, the city's sewer rules may apply instead of a septic system17.

Hamilton County Groundwater Protection issues permits for new systems and changes to existing ones18, and applications must be completed online17. Tennessee requires a septic permit before construction, modification or repair19. Plan the septic permit early: the state advises getting it before dirt work on any building pad19. Tennessee also lets utilities with sewer bonds require connection when a sewer line runs along your street20. Confirm with the city whether sewer reaches your lot.

Countywide soil data rates only 15% of soils "not limited" for a conventional drain field, so expect a site evaluation and possibly an engineered system21.

Can you live in an RV or tiny home in Collegedale?

Collegedale's code addresses recreational vehicle parks and camping grounds in the AG district, which need Board of Zoning Appeals approval5. We found no city rule for a single RV lived in on a private lot, so call Planning & Zoning before parking one15. Tiny-home occupancy inside the city is unconfirmed too, so ask the same office.

Tennessee bars converting a ready-removable structure into residential housing22. Short-term rentals inside Collegedale need an operating permit with a $300 application fee and a $100 annual renewal23.

Building a home in Collegedale: the steps, in order

  1. Confirm your lot's zoning district and dimensions with city Planning & Zoning15.
  2. Ask the city whether sewer serves the lot; if not, apply online to Hamilton County Groundwater Protection for a septic permit17.
  3. Check the lot against the flood maps; planned residential developments require building areas above the 100-year flood stage24.
  4. Pull a building permit from the City of Collegedale Building & Codes Department before any work2.
  5. Build to the 2018 International Residential Code as amended by the city4.
  6. If you are subdividing or building in a planned residential development, follow the Collegedale Subdivision Regulations for streets and access25.

What stays with Hamilton County, and what to check before you buy

Septic permits and septic installer questions stay with Hamilton County Groundwater Protection18. Land outside Collegedale city limits follows the county's rules; see the Hamilton County page for unincorporated land. Hamilton County's effective property tax rate is 0.7%, with a median bill of $1,888 a year2627.

Before buying, confirm the zoning district on the Official Zoning Map7, whether sewer is available, and flood status. We could not confirm a private-well permit rule inside the city, so ask Hamilton County Groundwater Protection before drilling28.

Watch-outs

  • Collegedale's zoning ordinance is under revision, so district rules may change; call Planning & Zoning to confirm current standards15.
  • Starting work without a permit costs double the fee2.
  • Hamilton County rules for unincorporated land do not apply inside Collegedale city limits; use the city offices, with septic through Hamilton County3.
  • We could not confirm owner-builder, certificate-of-occupancy or well-permit rules for property inside Collegedale; ask Building & Codes or Hamilton County Groundwater Protection2.

Sources

  1. Division 3 Development Review - City of Collegedale, TN (Collegedale), quoted and re-checked
  2. City of Collegedale Building & Codes Department (collegedaletn.gov)
  3. Chapter 1 Water and Sewers - City of Collegedale, TN (Collegedale), quoted and re-checked
  4. Chapter 11 Residential Code - City of Collegedale, TN (Collegedale), quoted and re-checked
  5. Division 4 Zoning Districts and Regulations - City of Collegedale, TN (Collegedale), quoted and re-checked
  6. Division 4 Zoning Districts and Regulations - City of Collegedale, TN (Collegedale), quoted and re-checked
  7. Division 4 Zoning Districts and Regulations - City of Collegedale, TN (Collegedale), quoted and re-checked
  8. Division 4 Zoning Districts and Regulations - City of Collegedale, TN (Collegedale), quoted and re-checked
  9. Division 4 Zoning Districts and Regulations - City of Collegedale, TN (Collegedale), quoted and re-checked
  10. Division 4 Zoning Districts and Regulations - City of Collegedale, TN (Collegedale), quoted and re-checked
  11. Division 4 Zoning Districts and Regulations - City of Collegedale, TN (Collegedale), quoted and re-checked
  12. Division 4 Zoning Districts and Regulations - City of Collegedale, TN (Collegedale), quoted and re-checked
  13. Division 4 Zoning Districts and Regulations - City of Collegedale, TN (Collegedale), quoted and re-checked
  14. Division 4 Zoning Districts and Regulations - City of Collegedale, TN (Collegedale), quoted and re-checked
  15. City of Collegedale Planning & Zoning (collegedaletn.gov)
  16. Hamilton County Building Inspection Department, quoted and re-checked
  17. Septic Information and Forms, Hamilton County Government (Collegedale), quoted and re-checked
  18. hamiltontn.gov, quoted and re-checked
  19. Septic System Construction Permit (Tennessee statewide rule), quoted and re-checked
  20. Utility Customers Frequently Asked Questions (Tennessee statewide rule), quoted and re-checked
  21. 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
  22. Public Guidance: Ready-Removables and Non-Traditional Homes, quoted and re-checked
  23. Division 4 Zoning Districts and Regulations - City of Collegedale, TN (Collegedale), quoted and re-checked
  24. Subdivision 1 Planned Residential Developments - City of Collegedale, TN (Collegedale), quoted and re-checked
  25. Subdivision 1 Planned Residential Developments - City of Collegedale, TN (Collegedale), quoted and re-checked
  26. Effective property tax rate: Bolthole Index county data
  27. Median property tax bill: Bolthole Index county data
  28. Hamilton County Groundwater Protection (Development Services) (hamiltontn.gov)

Written October 24, 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 Collegedale

Collegedale’s own rules

  • Building code adoptedAdopted (with conditions)

    New dwellings, apartment houses, rooming houses, and buildings, structures, or premises used as such inside Collegedale.

    • The adopted IRC is amended by § 12-1101; Chapter 11 energy-efficiency provisions were deleted.

    residential code edition: 2018 International Residential Code (With appendices A, B, C, E, H, J and M and local amendments.)

    “the International Residential Code, 2018 edition”
  • Local zoningPresent (with conditions)

    Land inside Collegedale city limits.

    • Land and structures must conform to the regulations for the district where located.
    “no structure or land shall after the effective date of this title be used”
  • Zoning districtsPublished (with conditions)

    Zoning districts inside Collegedale city limits.

    • District boundaries are established on the Official Zoning Map of Collegedale, Tennessee; certified copies are maintained in the Office of the Zoning Official.
    “For the purpose of this title, the following zoning districts are hereby established in the City of Collegedale, Tennessee:”
  • Living in an RVLimited

    Recreational-vehicle parks and camping grounds in the AG Agricultural District inside Collegedale.

    • The use-table key defines Z as permitted by the Board of Zoning Appeals.
    “Recreational Vehicle parks and camping grounds”
  • Camping on your landLimited

    Camping grounds in the AG Agricultural District inside Collegedale.

    • The use-table key defines Z as permitted by the Board of Zoning Appeals.
    “Recreational Vehicle parks and camping grounds”
  • Manufactured homesLimited

    Manufactured-home parks inside Collegedale.

    • Manufactured-home parks are permitted by right in R-3 and permitted by Board of Zoning Appeals in U-1.
    • The single-family-detached-dwelling entry excludes mobile homes and single-wide manufactured homes.
    “Manufactured home parks | | | | | P | | Z | | | | | | |”
  • Off-grid sanitationLimited

    Human-waste disposal at buildings inside Collegedale city limits.

    • Discharge outside the city sewer system is limited to a properly functioning septic system approved by Hamilton County Division of Groundwater Protection or an NPDES-permitted discharge.
    “The discharge of sewage into places other than the city's sewer system is declared a nuisance, except for discharge into a properly functioning septic tank system approved by the Hamilton County Division of Groundwater Protection or discharges permitted by a National Discharge Elimination System Permit issued by the State of Tennessee Department of Health and Environment (NPDES).”
  • Subdividing landRegulated (with conditions)

    Planned residential developments and lots to be sold inside Collegedale.

    • PUD streets, roads, rights-of-way, and access easements must follow Collegedale Subdivision Regulations; an approved PUD development plan and Fire Marshal may provide an exception.
    “All streets, roads, rights-of-way or access easements serving lots to be sold shall be constructed in accordance with the Collegedale Subdivision Regulations on rights-of-way having a minimum width as required by the Collegedale Subdivision Regulations except that through approval of a PUD Development Plan and Fire Marshal.”
  • Short-term rentalsLimited

    Short-term rental units inside Collegedale city limits.

    • A Short-Term Rental Unit Operation Permit is required before operation or advertising.
    • The application fee is $300 and nonrefundable; renewal is annual with a $100 fee; a permit is valid for one calendar year unless revoked or terminated.
    • The code requires life-safety equipment, verification or inspection before initial issuance, and compliance with other applicable laws and ordinances.

    initial operating permit application fee: 300 USD (Non-refundable; no proration.) · annual renewal fee: 100 USD (Pay no later than 14 business days before expiration.)

    “It is unlawful to operate or advertise any Short-term Rental Unit within the City without a Short-term Rental Unit Operation Permit issued under this section.”

Rules another office applies inside Collegedale

Collegedale does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

  • Minimum lot sizeSpecified

    R-1-L Low Density Single-Family Residential District inside Collegedale.

    • The minimum depends on water and sewer service.

    minimum land area with individual wells and septic tanks: >= 43560 square feet · minimum land area with public water and septic tanks: >= 25000 square feet · minimum land area with sanitary sewers: >= 15000 square feet

    “Single family lots an individual wells and septic tanks | 43,560 SF | In no case shall be area occupied by all structures, including accessory buildings, exceed forty (40) percent of the total land area”
    One more reviewed finding on this topic
  • SetbacksSpecified

    AG Agricultural District inside Collegedale.

    • Front-yard depth varies by road type; side-yard requirement varies by number of stories.

    minimum rear yard: >= 20 feet · minimum front yard on major thoroughfares/collectors: >= 50 feet · minimum front yard on local streets/cul-de-sacs: >= 35 feet

    “AG | Along Major thoroughfares/collectors | 50 ft | 20 ft | 1-2 story structures | 10 ft + 5 additional ft for stories over 2”
    One more reviewed finding on this topic
  • Lot coverageSpecified

    AG Agricultural District inside Collegedale.

    • Limit applies to permitted nonagricultural principal and accessory uses.

    maximum lot coverage: <= 30 percent (Permitted nonagricultural principal and accessory uses.)

    “Permitted nonagricultural uses, both principal and accessory, shall cover no more than 30% of the total land area.”
    One more reviewed finding on this topic
  • Building heightSpecified

    AG Agricultural District inside Collegedale.

    • The cited table states an exception cross-reference to § 14.207.

    maximum height: <= 30 feet (Two stories; except as provided exemptions in § 14.207.)

    “Two (2) stories and thirty (30) feet except as provided exemptions in § 14.207”
    One more reviewed finding on this topic
  • Who permits septicCounty (with conditions)

    Septic systems serving property inside Collegedale city limits where municipal sewer connection is not required.

    • The city code recognizes a properly functioning septic tank system approved by the Hamilton County Division of Groundwater Protection as an exception to its sewer-discharge rule.
    “approved by the Hamilton County Division of Groundwater Protection”
  • Septic permitRequired

    New septic installations serving property inside Collegedale city limits where a septic system is allowed.

    • Hamilton County directs applicants to submit applications online; municipal sewer requirements may instead apply when sewer is available.
    “All applications must be completed online”
  • Driveway accessRequired

    Fee-simple townhouse lots with a driveway in a planned residential development inside Collegedale.

    • Front-driveway lots require a public-street frontage of at least 24 feet and a minimum depth of 110 feet; rear-driveway lots may reduce frontage to 20 feet.

    minimum two-car driveway length: >= 20 feet (PUD fee-simple townhouse lots.)

    “A two-car driveway shall be provided with a minimum length of 20 feet.”
  • Building in a floodplainLimited

    Lots in planned residential developments inside Collegedale.

    • The requirement relies on the most recently adopted FIRM maintained by the City's Floodplain Manager.
    “All lots shall have a building area above the 100-year flood stage as delineated on the most recently adopted Flood Insurance Rate Maps (FIRM) on file in the office of the City's Floodplain Manager.”

Still unanswered

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

  • Building permit — Residential construction inside Collegedale city limits.
  • Owner-builder exemption — Owner-built dwellings inside Collegedale city limits.
  • Inspections — Residential construction inside Collegedale city limits.
  • Certificate of occupancy — New residential construction inside Collegedale city limits.
  • Minimum dwelling size — Single-family dwellings in Collegedale's principal residential and AG districts.
5 more unanswered
  • Tiny homes
  • Septic inspection
  • Well permit
  • Agricultural exemption
  • Permit fees

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 Collegedale publishes no rule on the point, not that none exists. Hamilton County’s page lists the county offices to call.

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