Zoning › Texas › Harris County › Houston

Houston, TX Zoning

No-zoning-zoning. 3 districts · 3 overlays · 3 applicable state preemptions.

Overview

Code type
no-zoning
Naming convention
n/a

Houston is the largest US city without Euclidean zoning. Land use is governed by (a) private deed restrictions enforced by the City via Chapter 212 Tex. Local Gov. Code authorization, (b) Chapter 42 of the Code of Ordinances for lot/setback/platting standards, (c) historic districts under Chapter 33 Article VII, and (d) the Major Thoroughfare and Freeway Plan (MTFP) for corridor setbacks. The base_districts[] array captures Chapter 42 'Urban'/'Suburban' lot standards (by Loop 610 geography), not use-based zones.

Worth knowing
  • Largest US city with no formal zoning — voters rejected zoning three times (1948, 1962, 1993). Land use is instead shaped by private deed restrictions (enforced by the City Legal Department under Chapter 10), Chapter 42 Urban/Suburban lot/building-line standards, Chapter 33 Art. VII historic districts, and Chapter 42 Art. VIII MTFP setbacks. (Chapter 10 §10-551; Chapter 42; Chapter 33 Art. VII)
  • Chapter 42 controls lots/setbacks/parking but NOT land use. A single-family dwelling and a small office may legally share a block unless a deed restriction or SMLS/SMBL block-petition says otherwise. (Chapter 42 §42-181; §42-186; §42-189)
  • Inside Loop 610: 1,400 sf minimum single-family lot (Urban). Outside Loop 610: 5,000 sf (Suburban). The Loop 610 boundary functions as the only geographic zoning-equivalent line in the city. (§42-181)

+ 5 more in Quirks & notes

Districts

mu 2res_th 1
CodeNameCategory Min lotHeight CoverageFAR Du/acParking Setbacks F/S/R
URBANUrban (Inside Loop 610)mu1,400 sf[4]-1 ft[5]0.8[6]——1.25[7]10[1] / 5[2] / 5[3]
SUBURBANSuburban (Outside Loop 610)mu5,000 sf[11]-1 ft[12]0.65[13]——1.33[14]25[8] / 5[9] / 10[10]
TH-UTownhouse/Patio (Urban)res_th1,400 sf[18]-1 ft[19]0.9[20]——2[21]10[15] / 0[16] / 5[17]

Confidence: confirmed partial under review not found

Overlays

HD
Houston Heights Historic Districts — Historic Preservation
HP
Houston Code of Ordinances Chapter 33 Article VII (Historic Preservation) · c§33-241; §33-242; §33-247
SMLS-SMBL
Special Minimum Lot Size / Special Minimum Building Line
CON
Houston Code of Ordinances Chapter 42 §§42-194 through 42-201 (Special Minimum Lot Size and Special Minimum Building Line blocks) · c§42-195; §42-196; §42-197
MTFP
Major Thoroughfare and Freeway Plan (MTFP) Setbacks
COR
Houston Code of Ordinances Chapter 42 Article VIII (§§42-121 through 42-135) and the Major Thoroughfare and Freeway Plan adopted by the Planning Commission · c§42-123; §42-150

State preemptions

TX HB 2127applies
Qualifying condition
HB 2127 is statewide and applies to every Texas home-rule city including Houston (pop 2,314,000, Census PEP 2023 vintage). Preempts municipal ordinances in fields regulated by the Agriculture, Business & Commerce, Finance, Insurance, Labor, Natural Resources, Occupations, and Property Codes. Property Code §§ governing landlord-tenant, plats, and recorded restrictions intersect with Houston's Chapter 42 plat regime. HB 2127 took effect 2023-09-01; a 2023 state district court ruled portions unconstitutional, but the Third Court of Appeals stayed enforcement in favor of the state — law is currently in force pending further appeals.
TX HB 3699applies
Qualifying condition
HB 3699 applies statewide to cities that attempt to prohibit short-term rentals (STRs) or restrict them based on use-classification. Houston has no zoning, so a city-wide use-based STR ban is impossible, but Chapter 42 plat-level tools and deed restrictions can effectively restrict STRs. HB 3699 limits the City's enforcement role in deed-restriction cases involving STR use — City Legal Department (§10-551) cannot enforce a deed restriction whose purpose is to prohibit STRs. Effective 2023-09-01.
TX SB 15applies
Qualifying condition
SB 15 applies to lots ≤4,000 sf statewide in cities with populations over 150,000. Houston qualifies on population (Census PEP 2023: 2,314,000 ≥ 150,000). Houston's Chapter 42 Urban category already permits 1,400 sf minimum lots, and townhouse/patio lots start at 1,400 sf — many existing platted lots fall under the 4,000 sf SB 15 threshold.
Non-applicable laws (1)
TX SB 840confirmed
Qualifying condition
SB 840 qualifying conditions — city pop ≥150,000 AND county pop ≥300,000 — are met (Houston pop 2,314,000 per Census PEP 2023; Harris County 4,780,913 per Census PEP 2023). However, SB 840's operative text applies to C (commercial), O (office), R (retail), W (warehouse), and MU (mixed-use) ZONING DISTRICTS. Houston has no zoning districts of any kind. Chapter 42 'Urban'/'Suburban' are lot/setback categories, not use districts. SB 840 therefore has no zoning classes to attach to in Houston; applicability is facial-zero.

Adopted building codes

Home rule; major cities on 2024 IBC

IBC
2021
IRC
2021
NEC
2023
IFC
Local adoption
IECC (Residential)
2015
IECC (Commercial)
2015

Click a code label to open its state-by-state adoption atlas.

Quirks & notes

  • Largest US city with no formal zoning — voters rejected zoning three times (1948, 1962, 1993). Land use is instead shaped by private deed restrictions (enforced by the City Legal Department under Chapter 10), Chapter 42 Urban/Suburban lot/building-line standards, Chapter 33 Art. VII historic districts, and Chapter 42 Art. VIII MTFP setbacks. (Chapter 10 §10-551; Chapter 42; Chapter 33 Art. VII)
  • Chapter 42 controls lots/setbacks/parking but NOT land use. A single-family dwelling and a small office may legally share a block unless a deed restriction or SMLS/SMBL block-petition says otherwise. (Chapter 42 §42-181; §42-186; §42-189)
  • Inside Loop 610: 1,400 sf minimum single-family lot (Urban). Outside Loop 610: 5,000 sf (Suburban). The Loop 610 boundary functions as the only geographic zoning-equivalent line in the city. (§42-181)
  • No FAR limits anywhere. Density is controlled only via minimum lot size + parking + Chapter 42 building lines. A mid-rise is theoretically permissible on any qualifying lot outside a historic district, subject to Chapter 42 lot width, parking, and MTFP setback. (Chapter 42 (absence of FAR); §26-492 (parking))
  • Heights are unlimited by Chapter 42. Constraints come from FAA Part 77 / City Chapter 9 (airport hazard zones around IAH and HOU) and structural/building-code limits, not zoning. (Chapter 9 (airport hazard); FAA Part 77 federal overlay)
  • 22 historic districts under Chapter 33 Article VII provide de facto form-based overlay protection — the strongest public-sector form control the City has. Houston Heights districts alone cover ~20 square miles of the inner loop. (Chapter 33 §33-241)
  • SB 840 inapplicability — although Houston meets the population/county thresholds, SB 840's preemption targets named zoning districts (C/O/R/W/MU) that do not exist in Houston. This is the documented state-preemption edge case in quirks-catalog.md. (Tex. Loc. Gov. Code via SB 840 (89R))
  • HB 3699 (2023) blocks City enforcement of deed restrictions targeting STRs — in a city where deed restrictions are the primary use-control mechanism, this state law removes one of the few public enforcement tools that would have substituted for STR zoning. (Tex. Gov. Code via HB 3699)

Formulas

Definitions

height
Grade to highest point of structure; unlimited in most of the city absent FAA Part 77 / airport hazard overlay.
lot_coverage
Building footprint / lot area.
far
Gross floor area / lot area — Chapter 42 does not set a FAR; not_applicable citywide.
du_ac
Dwelling units per gross acre — Chapter 42 does not set a du/ac cap; density is controlled indirectly via minimum lot size.
setback_front
Front property line to nearest building face (Chapter 42 calls this the 'building line').
setback_side
Side property line to nearest building face.
setback_rear
Rear property line to nearest building face.
parking
Off-street spaces per dwelling unit per Chapter 26 (Parking).

Capacity calculations

max_footprint_sf
lot_area_sf * lot_coverage
max_units
lot_area_sf / min_lot_sf
far_not_applicable
Houston Chapter 42 does not regulate FAR; bulk is controlled via lot size + building lines + 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.

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drag to orbit · scroll to zoom
Max height
— ft
——
Floor area ratio
—
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Lot coverage
—%
——
Setbacks (F / S / R)
— ft
——
Parking
— /unit
——
Max density
— du/ac
——
Min lot size
— sf
——
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District Category Height FAR Coverage Setbacks Parking Density Min lot Overlays

Sources & references

Primary source
Code of Ordinances, City of Houston — Chapter 42 (Subdivisions, Developments and Platting) and Chapter 33 Art. VII (Historic Preservation)
retrieved 2026-04-19
Citations
  1. [1] §42-186
  2. [2] §42-186
  3. [3] §42-186
  4. [4] §42-181
  5. [5] §42-1
  6. [6] i§42-186
  7. [7] §26-492
  8. [8] §42-186
  9. [9] §42-186
  10. [10] §42-186
  11. [11] §42-181
  12. [12] §42-1
  13. [13] i§42-186
  14. [14] §26-492
  15. [15] §42-189
  16. [16] §42-189
  17. [17] §42-189
  18. [18] §42-189
  19. [19] §42-1
  20. [20] i§42-189
  21. [21] §26-492

Research status

Publication gates

primary url presentpassed
no aggregator citedpassed
confidence tags full formpassed
overlays have parameters trigger confidencepassed
preempt section city specificpassed

Data quality

78%completeness19 confirmed3 inferred
Documented gaps
  • Use-based districts do not exist — intentionally empty, not a data gap.
  • Per-district historic design guidelines (22 districts) not individually captured; see HAHC-published district handbooks for parcel-level work.
  • Exact lot-coverage percentages are inferred from §42-186/§42-189 setback geometry; Chapter 42 does not state them as explicit percents.
  • Chapter 26 parking table retrieved at category level; per-use detail (retail sf-per-space, restaurant seat-ratios) not captured in this profile — handled at site-design stage.

Known issues

data:gaps-present

Verification

last_verified_at2026-04-19T00:00:00Z
verifier_specialistverification-pass
verifier_version1.0
verification_resultpassed
atomic_claims_checked34
atomic_claims_passed34
atomic_claims_failed0
failed_claims
narrative_refnarratives/houston-tx/houston-2026-04-19-v2.json

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