Overview
Code type
euclidean
Naming convention
letter-code + numeric/qualifier (R-1/R-1A/R-2/R-2A/R-3/R-3A/R-4 = density ladder; R-L = large-lot/estate; R-L1 = 1-acre lots; R-25 = ~25k sf lots; FAR = forest/agriculture/residential; R-TH = townhouse; T = mobile-home-park; TN = Traditional Neighborhood; MU = mixed-use; NC/MPO/SCC/CB/GC commercial ladder; RI/GI industrial)
Standard suburban TN Euclidean code with an explicit Forest/Agricultural/Residential (FAR) base and a Traditional Neighborhood (TN) overlay-like base district. Historic Zoning District (H-1) governed via §§151.195-205. Floodplain overlay at §§151.090-102. Airport hazard regulations at §§151.285-292.
Worth knowing
- Cloudflare-gated canonical source. codelibrary.amlegal.com/codes/collierville returns HTTP 403 with cf-mitigated:challenge header to all scripted access (curl, WebFetch). Wayback Machine partially caches the chapter TOC (sid 41935) but not the dimensional / district detail pages. Town's own site at collierville-tn.elaws.us also returns 503. Profile-completion requires either Playwright stealth, a manual PDF download, or in-person Town Hall request.
- Two-tier residential ladder structure (R-1/R-1A, R-2/R-2A, R-3/R-3A). Collierville uses paired A-suffix tiers within R-1, R-2, and R-3 density bands — six districts spanning what most TN cities cover in three. v1 profile completely omitted R-2A. The A-variants typically have slightly different lot-width / setback rules from the base. (§§151.036-151.041)
- Separate T (Mobile Home Park) and TN (Traditional Neighborhood). Collierville has TWO distinct districts at §151.043 (T Mobile Home Park Residential) and §151.049 (TN Traditional Neighborhood). v1 profile conflated them under a single 'T Traditional Neighborhood' entry, which is materially wrong — they are unrelated use categories. (§151.043 (T); §151.049 (TN))
+ 5 more in Quirks & notes
Districts
res_sf 7res_mf 5com 5mu 2ind 2spec 1
| Code | Name | Category | Min lot | Height | Coverage | FAR | Du/ac | Parking | Setbacks F/S/R |
|---|---|---|---|---|---|---|---|---|---|
| FAR | Forest-Agricultural-Residential District | spec | — | — | — | — | — | — | — / — / — |
| R-L | R-L Large Lot / Estate Development Residential District | res_sf | — | — | — | — | — | — | — / — / — |
| R-L1 | R-L1 Large Lot / One Acre Residential District | res_sf | — | — | — | — | — | — | — / — / — |
| R-25 | R-25 Low Density Residential District | res_sf | — | — | — | — | — | — | — / — / — |
| R-1 | R-1 Low Density Residential District | res_sf | — | — | — | — | — | — | — / — / — |
| R-1A | R-1A Low Density Residential District | res_sf | — | — | — | — | — | — | — / — / — |
| R-2 | R-2 Medium Density Residential District | res_sf | — | — | — | — | — | — | — / — / — |
| R-2A | R-2A Medium Density Residential District | res_sf | — | — | — | — | — | — | — / — / — |
| R-3 | R-3 High Density Residential District | res_mf | — | — | — | — | — | — | — / — / — |
| R-3A | R-3A High Density Residential District | res_mf | — | — | — | — | — | — | — / — / — |
| R-4 | R-4 Multi-Family Residential District | res_mf | — | — | — | — | — | — | — / — / — |
| T | T Mobile Home Park Residential District | res_mf | — | — | — | — | — | — | — / — / — |
| R-TH | R-TH Townhouse Residential District | res_mf | — | — | — | — | — | — | — / — / — |
| TN | TN Traditional Neighborhood District | mu | — | — | — | — | — | — | — / — / — |
| MU | MU Mixed Use District | mu | — | — | — | — | — | — | — / — / — |
| NC | NC Neighborhood Commercial District | com | — | — | — | — | — | — | — / — / — |
| MPO | MPO Medical-Professional Office District | com | — | — | — | — | — | — | — / — / — |
| SCC | SCC Shopping Center Commercial District | com | — | — | — | — | — | — | — / — / — |
| CB | CB Central Business District | com | — | — | — | — | — | — | — / — / — |
| GC | GC General Commercial District | com | — | — | — | — | — | — | — / — / — |
| RI | RI Restrictive Industrial District | ind | — | — | — | — | — | — | — / — / — |
| GI | GI General Industrial District | ind | — | — | — | — | — | — | — / — / — |
Confidence: confirmed partial under review not found
Overlays
H-1
H-1 Historic Zoning District
historicFP
Flood Hazard Areas
floodAHO
Airport Hazard / Approach Surface Regulations
airportPD
Planned Development Overlay
planned-developmentDRC
Design Review Commission jurisdiction
design-reviewSHELBY-CO
Shelby County Coordination
intergovernmentalState preemptions
TN-STR-ACTapplies
Qualifying condition
Collierville is a Tennessee municipal corporation (Town of Collierville), incorporated 1850, located in Shelby County. TN STR Act applies to all 'local governmental units' in TN per §13-24-102. Inputs: TN municipal status (confirmed); statute effective 2018-05-24 with 2024 PC 963 amendment.
Effect
Any Collierville STR ordinance cannot retroactively prohibit pre-existing lawfully operating STRs. Pre-ordinance STRs grandfathered in perpetuity. Prospective regulation (registration, occupancy, noise, tax) permitted; functional-denial schemes barred (2024 PC 963).
TN-IZ-BANapplies
Qualifying condition
Collierville is a TN municipal corporation; §6-54-127 applies to all 'local governmental units'. Mandatory IZ tied to zoning approval is preempted; voluntary density-bonus / attainable-housing incentive programs permitted under 2024 HB 2623 / SB 2496.
Effect
Collierville cannot enact mandatory affordable set-asides tied to zoning approvals, building permits, or COs. Voluntary density-bonus or direct-subsidy-tied affordability permitted.
TN-MH-PARITYapplies
Qualifying condition
Collierville residential districts permit site-built SFD across multiple tiers (R-L through R-2A); parity requirement attaches. Collierville also has a separate T Mobile Home Park District (§151.043), which is permissible so long as MH siting elsewhere in residential districts is on parity with site-built SFD compatibility standards.
Effect
HUD-code manufactured homes must be allowed on parity with site-built SFD for any Collierville compatibility standard in zones where SFD is permitted.
TN-Greenbeltapplies
Qualifying condition
Collierville FAR (Forest-Agricultural-Residential, §151.048) district exists; residual Greenbelt parcels are likely within FAR-zoned territory and at the city's UGB perimeter.
Effect
Conversion of Greenbelt-classified land triggers rollback tax (3-year ag/forest, 5-year open space, +interest).
TN-13-7-208-Nonconformingapplies
Qualifying condition
Any lawfully established industrial/commercial use predating a Collierville zoning change. Chapter 151 §§151.130-151.137 (nonconformities) codifies local procedures consistent with state floor.
Effect
Pre-existing industrial/commercial uses cannot be terminated by subsequent zoning change absent discontinuance per §13-7-208.
TN-PC1101-Growthapplies
Qualifying condition
Shelby County has an adopted 20-year growth plan (per TACIR Tennessee County Growth Plans registry); Collierville UGB is part of that plan. All 95 TN counties are subject; Shelby County's plan is on file with LGPAC.
Effect
Collierville's annexation territory is bounded by its certified UGB. Future annexations must occur inside the UGB. Planned Growth Area / Rural Area assignments outside the UGB constrain Collierville's expansion options.
Non-applicable laws (1)
TN-ADU-NONEnot_applicable_no_state_mandate
Qualifying condition
TN General Assembly bill index 2024-2026: no enacted statewide ADU preemption or by-right mandate. 2026 SB 104 / HB 109 pending but not enacted as of 2026-05-18.
Effect
ADU regulation is fully local to Collierville; no state ceiling or floor.
Adopted building codes
Major cities adopt newer locally
Click a code label to open its state-by-state adoption atlas.
Quirks & notes
- Cloudflare-gated canonical source. codelibrary.amlegal.com/codes/collierville returns HTTP 403 with cf-mitigated:challenge header to all scripted access (curl, WebFetch). Wayback Machine partially caches the chapter TOC (sid 41935) but not the dimensional / district detail pages. Town's own site at collierville-tn.elaws.us also returns 503. Profile-completion requires either Playwright stealth, a manual PDF download, or in-person Town Hall request.
- Two-tier residential ladder structure (R-1/R-1A, R-2/R-2A, R-3/R-3A). Collierville uses paired A-suffix tiers within R-1, R-2, and R-3 density bands — six districts spanning what most TN cities cover in three. v1 profile completely omitted R-2A. The A-variants typically have slightly different lot-width / setback rules from the base. (§§151.036-151.041)
- Separate T (Mobile Home Park) and TN (Traditional Neighborhood). Collierville has TWO distinct districts at §151.043 (T Mobile Home Park Residential) and §151.049 (TN Traditional Neighborhood). v1 profile conflated them under a single 'T Traditional Neighborhood' entry, which is materially wrong — they are unrelated use categories. (§151.043 (T); §151.049 (TN))
- FAR district exists as base zoning, not floor-area-ratio. The acronym 'FAR' in Collierville refers to the Forest-Agricultural-Residential base zoning district (§151.048), NOT to floor area ratio. Be careful of search ambiguity. The actual FAR (floor area ratio) dimensional metric lives in §151.027 if used at all. (§151.048)
- Design Review Commission with substantive guidelines authority. Collierville has a formal Design Review Commission (§§151.240-250) with binding design guidelines applied to non-exempt projects. Atypical for a TN suburb of ~50k; more common in California or in older New England villages. Triggers an additional procedural layer beyond Planning Commission for many non-residential and PD projects. (§§151.240-151.250)
- Airport hazard regulations (Charles W. Baker general aviation). Chapter 151 §§151.285-292 includes airport hazard / approach-surface regulations. Collierville lies near several general-aviation facilities including Charles W. Baker Airport (Millington) and is in the broader Memphis International (MEM) Part 77 vicinity but is well outside MEM's 65 DNL AICUZ. Height limits from FAR Part 77 surfaces apply. (§§151.285-151.292)
- Comprehensive PD overlay framework. PD (Planned Development) overlay at §§151.150-160 supports residential (§151.156), commercial/industrial (§151.157), mixed-use (§151.158), and seniors-housing (§151.159) sub-types — broader typology than most TN suburbs. PD-approved standards supersede base district controls. (§§151.150-151.160)
- Public Chapter 1101 UGB bounds annexation. Collierville's Urban Growth Boundary (per 1998 PC 1101) defines the 20-year annexation reserve. Sites in the Shelby County PGA/RA outside Collierville's UGB cannot be annexed; growth-plan amendment via county-municipal coordination committee + LGPAC is the only pathway. (TCA §6-58-101 et seq.)
Formulas
Definitions
- height
- {"description": "Maximum building height in feet, measured grade to highest point per §151.003 definitions", "unit": "ft"}
- setbacks
- {"description": "Distance from property line to building face per §151.027 bulk regulations table", "unit": "ft"}
- lot_coverage
- parking
Massing explorer
Interactive 3D comparison across every district. Drag to orbit, scroll to zoom, use the slider to walk districts, and toggle applicable overlays in the right-side panel.
Sort by
Max height
— ft
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Floor area ratio
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Lot coverage
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Setbacks (F / S / R)
— ft
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Parking
— /unit
——
Max density
— du/ac
——
Min lot size
— sf
——
Copy zoning profile
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| District | Category | Height | FAR | Coverage | Setbacks | Parking | Density | Min lot | Overlays |
|---|
Sources & references
Research status
Publication gates
| primary url present | passed | https://codelibrary.amlegal.com/codes/collierville/latest/collierv_tn/0-0-0-41935 |
|---|---|---|
| no aggregator cited | passed | scan clean — only amlegal, colliervilletn.gov, elaws.us, web.archive.org referenced |
| confidence tags full form | failed | All 22 base-district dimensional fields are under_review (Cloudflare-gated §151.027); overlay parameters partial. 0 confirmed §-cited dimensional values out of ~120 expected fields. |
| overlays have parameters trigger confidence | passed | All 6 overlays (H-1, FP, AHO, PD, DRC, SHELBY-CO) have parameters[], geographic_trigger, status, and citation populated |
| preempt section city specific | passed | 7 TN preemption laws applied with city-specific qualifying_condition_checked; TN is not in active-preemption gate-5 list but record is well-populated |
Data quality
45%completeness22 confirmed30 partial
Documented gaps
- §151.027 bulk regulations table — all dimensional values (min lot, height, setbacks, lot coverage, FAR, density) blocked by Cloudflare and not cached on Wayback
- Per-district use tables (§151.021) not extracted
- Parking ratios (§151.117 table) not extracted
- Flood freeboard heights (§151.100) not extracted
- Airport hazard surface elevations (§151.289) not extracted
- Collierville UGB boundary geometry (lives in TACIR / Shelby County registries)
- STR ordinance text (if any) — Chapter 151 TOC scan did not show STR-specific section; Chapter 110 or 117 may govern
Known issues
dimensional-standards-under-reviewprimary-source-cloudflare-gatedneeds-pdf-or-wayback-deepfetch
Verification
| last_verified_at | 2026-05-18T00:00:00Z |
|---|---|
| verifier_specialist | subagent-drain-20260518T072625-tn-01 |
| verifier_version | 2.0 |
| verification_result | partial |
| atomic_claims_checked | 24 |
| atomic_claims_passed | 22 |
| atomic_claims_failed | 0 |
| atomic_claims_pending | 2 |
| notes | Chapter 151 TOC (§§151.001-151.998) extracted from Wayback Machine cache 2025-03-21 of codelibrary.amlegal.com root TOC page; all 22 base-district section assignments (§151.036-077) verified against the TOC. Overlay refs (H-1 §151.195, Floodplain §§151.090-102, Airport §§151.285-292, PD §§151.150-160, DRC §§151.240-250) verified. State preemptions (TN-STR, TN-IZ-BAN, TN-MH-PARITY, TN-Greenbelt, TN-13-7-208, TN-ADU-NONE, TN-PC1101) applied with city-specific qualifying conditions. Dimensional standards (§151.027 bulk regulations table) NOT extracted — primary source returns Cloudflare HTTP 403 and Wayback did not archive that section. Profile remains partial pending Cloudflare bypass or PDF/Playwright fetch. |
| narrative_ref | narratives/collierville-tn/drain-20260518T072625-tn-01.json |
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