Overview
Code type
euclidean
Naming convention
lot-size-encoded
Residential is lot-size-encoded (R-18 = 18,000 sf min). Commercial/industrial use letter codes (OD, NC, GC, CC, GB, LI, WH, HI). No inverse-naming pattern (unlike Grand Prairie).
Districts
com 6res_sf 5ind 3res_mf 2
| Code | Name | Category | Min lot | Height | Coverage | FAR | Du/ac | Parking | Setbacks F/S/R |
|---|---|---|---|---|---|---|---|---|---|
| R-18 | Estate Residential | res_sf | — | — | — | — | — | — | — / — / — |
| R-12 | Large Lot Residential | res_sf | — | — | — | — | — | — | — / — / — |
| R-10 | Standard Residential | res_sf | — | — | — | — | — | — | — / — / — |
| R-8.5 | Medium Residential | res_sf | — | — | — | — | — | — | — / — / — |
| R-7.5 | Small Residential | res_sf | — | — | — | — | — | — | — / — / — |
| R-DT | Duplex / Townhouse | res_mf | — | — | — | — | — | — | — / — / — |
| MF-3 | Multifamily | res_mf | — | — | — | — | — | — | — / — / — |
| OD | Office / Doctor | com | — | — | — | — | — | — | — / — / — |
| NC | Neighborhood Commercial | com | — | — | — | — | — | — | — / — / — |
| GC | General Commercial | com | — | — | — | — | — | — | — / — / — |
| CC | Community Commercial | com | — | — | — | — | — | — | — / — / — |
| GB-1 | General Business 1 | com | — | — | — | — | — | — | — / — / — |
| GB-2 | General Business 2 | com | — | — | — | — | — | — | — / — / — |
| LI | Light Industrial | ind | — | — | — | — | — | — | — / — / — |
| WH | Warehouse | ind | — | — | — | — | — | — | — / — / — |
| HI | Heavy Industrial | ind | — | — | — | — | — | — | — / — / — |
Confidence: confirmed partial under review not found
Overlays
OTMU-2
Old Town Mixed-Use
DTDowntown Lewisville / Old Town area — bounded by Main Street, Mill Street, Charles Street, and Civic Circle
| front_setback_ft | 0 |
|---|---|
| side_setback_ft | 5 |
| rear_setback_ft | 20 |
| rear_setback_ft_with_alley | 4 |
| max_height_ft | 75 |
| ground_floor_activation | True |
| pedestrian_oriented_design | True |
CH-PD
Castle Hills Planned Development
PDCastle Hills mixed-use development area; density bonuses within 0.5 mi of DART Silver Line Hebron Station
| far_range_low | 1.5 |
|---|---|
| far_range_high | 2.5 |
| parking_reduction_near_dart | True |
| density_bonus_near_dart | True |
| master_plan_governance | True |
| dart_proximity_mi | 0.5 |
FPO
Floodplain Overlay
FPFEMA 100-year floodplain along Cottonwood Creek, Denton Creek, Timber Creek, Prairie Creek, Midway Branch, Indian Creek
| freeboard_ft | 1 |
|---|---|
| substantial_improvement_threshold_pct | 50 |
| no_rise_in_floodway | True |
| floodplain_permit_required | True |
IH35E-CO
IH-35E Arterial Corridor Overlay
COParcels fronting or within defined setback of I-35E right-of-way
| enhanced_setbacks | partial |
|---|---|
| landscape_buffer | partial |
| sign_controls | partial |
| facade_standards | partial |
State preemptions
TX SB 15applies
Qualifying condition
Applies statewide to lots <=4,000 sf. No population threshold. Lewisville's R-DT district at 4,000 sf min lot directly interacts.
Effect
Limits city regulation of setbacks, parking, height, and bulk on qualifying <=4,000 sf lots. R-DT district setback/parking values are preempted_by_state for qualifying lots.
TX HB 2127applies
Qualifying condition
Applies statewide; partially enjoined. Zoning-code enforcement largely unaffected as of 2026-04.
Effect
Minimal direct effect on Ch. 29 dimensional standards; primary impact is on ancillary regulation (labor, environmental, natural-resources).
TX HB 3903applies
Qualifying condition
Applies statewide (subdivision / short-term rental enabling).
Effect
Enables plat/subdivision process changes; no preemption of zoning dimensional standards.
Non-applicable laws (1)
TX SB 840not_applicable
Qualifying condition
City population ~120,000 (2023 est; 2020 Census 111,822) is BELOW the 150,000 city-population threshold. Denton County ~950,000 exceeds 300,000 county threshold, but city threshold is controlling.
Effect
N/A — does not apply to Lewisville at current population. Will apply if Lewisville crosses 150,000 (expected within 5–10 years).
Adopted building codes
Home rule; major cities on 2024 IBC
Click a code label to open its state-by-state adoption atlas.
Quirks & notes
Formulas
Definitions
- height
- Grade to highest point of structure.
- lot_coverage
- Building footprint / lot area.
- far
- Gross floor area / lot area.
- du_ac
- Dwelling units per gross acre.
- setback_front
- Front property line to nearest building face.
- setback_side
- Side property line to nearest building face.
- setback_rear
- Rear property line to nearest building face.
- parking
- Spaces per dwelling unit unless noted.
Capacity calculations
- max_footprint_sf
lot_area_sf * lot_coverage- max_gfa_sf
lot_area_sf * far- buildable_width_ft
lot_width_ft - setback_side_ft * 2- buildable_depth_ft
lot_depth_ft - setback_front_ft - setback_rear_ft- max_stories_approx
max_height_ft / 10
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
——
Floor area ratio
—
——
Lot coverage
—%
——
Setbacks (F / S / R)
— ft
——
Parking
— /unit
——
Max density
— du/ac
——
Min lot size
— sf
——
Copy zoning profile
Loading…
| District | Category | Height | FAR | Coverage | Setbacks | Parking | Density | Min lot | Overlays |
|---|
Sources & references
Primary source
Research status
Publication gates
| primary url present | passed | |
|---|---|---|
| no aggregator cited | passed | |
| confidence tags full form | passed | |
| overlays have parameters trigger confidence | passed | |
| preempt section city specific | passed |
Data quality
78%completeness30 confirmed6 partial6 inferred1 not found
Documented gaps
- IH-35E corridor dimensional parameters (c§29.14) not fully extracted
- Castle Hills FAR by sub-district (c§29.15 master plan appendix) not extracted
- Commercial / industrial lot-coverage and side/rear setbacks — need Ch. 29 dimensional-table re-extraction
- Flag to state-preemption-tracker: correct erroneous Lewisville entry in texas.md SB 840 qualifying-cities list
Known issues
freshness:volatiledata:gaps-present
Verification
| last_verified_at | 2026-04-18T00:00:00Z |
|---|---|
| verifier_specialist | verification-pass |
| verifier_version | 1.0 |
| verification_result | passed |
| atomic_claims_checked | 38 |
| atomic_claims_passed | 36 |
| atomic_claims_failed | 0 |
| atomic_claims_partial | 2 |
| narrative_ref | narratives/lewisville-tx/a7c3e912-4ba8-44d1-9f1e-lwvl20260418.json |
Other cities in this state
Nearest-alphabetical profiles. Click through to compare zoning patterns side-by-side.