Mesquite | Lot Size and Small Lots
Mesquite Lot Size Rules, Subdividing, and What SB 15 Changes
Lot size decides whether a piece of land in Mesquite can be split, and how many homes a new subdivision can hold. The minimums are in Sec. 2.302 of the Mesquite Zoning Ordinance, and the rules for drawing new lots are in Article V of the Subdivision Ordinance. The 2025 state law SB 15 sets lower limits on some new single-family land. This page sets out the City numbers, the ways to go below them, and where SB 15 reaches. The Mesquite overview gives the short version.
Mesquite lot size in six facts
- The smallest standard house lot in Mesquite is 7,200 square feet, 60 feet wide and 110 feet deep, in the R-2A and R-3 districts. Source: Mesquite Zoning Ordinance, Sec. 2.302
- A duplex lot in the D district needs 12,500 square feet and 75 feet of width, and paired duplex lots each need half of that. Source: Mesquite Zoning Ordinance, Secs. 2.302 and 2.304(C)
- On a plat, the Planning and Zoning Commission may reduce the width, depth or size of up to 10 percent of the lots in a single-family subdivision. Source: Mesquite Zoning Ordinance, Sec. 2.304(A)
- The Subdivision Ordinance bars platting a lot less than 100 feet deep unless the zoning allows it or the Commission waives it. Source: Mesquite Subdivision Ordinance, Art. V(F)(5)
- Mesquite had 150,108 people in the 2020 Census and lies partly in Dallas County, so SB 15 applies by VanPlex count. Source: US Census Bureau, 2020 Census
- On a new single-family tract of 5 acres or more with no recorded plat, a city covered by SB 15 may not require a lot over 3,000 square feet, 30 feet wide or 75 feet deep. Source: Local Government Code 211.054
Minimum Lots by District
Sec. 2.302 is one table of lot, yard, height and house size rules for "Permitted residential uses." The apartment districts take their lot rules from Sec. 2.501(B) instead. Lot size means "The horizontal area contained within the lot lines," and lot depth means "The average horizontal distance between front and rear lot lines" (Sec. 6.102).
| District | Lot size (sq ft) | Width (ft) | Depth (ft) | Minimum home size (sq ft) |
|---|---|---|---|---|
| AG | 43,560 | 150 | 150 | 2,500 |
| R-1 | 11,000 | 85 | 120 | 2,000 |
| R-1A | 8,250 | 70 | 110 | 2,000 |
| R-2 | 8,250 | 70 | 110 | 1,700 |
| R-2A | 7,200 | 60 | 110 | 1,700 |
| R-3 | 7,200 | 60 | 110 | 1,500 |
| D (duplex) | 12,500 | 75 | 110 | 2,200 for both homes; 1,000 for the smaller |
| A-1, A-3 (apartments) | 10,000 | 80 | Not set | 725 per apartment; 500 per efficiency |
Source: Mesquite Zoning Ordinance on municode, Supplement 71, Sec. 2.302 and Sec. 2.501(B) and (E).
The last column is the minimum living area of a new house. Mesquite sets a floor on home size as well as on lot size: 1,500 square feet in R-3 and up to 2,500 in AG. Sec. 2.305 lets the Board of Adjustment grant a special exception for a smaller house "in neighborhoods where existing residences were predominantly constructed smaller than the currently required minimum size." A church, school or other nonresidential use in a residential district needs a lot of 43,560 square feet and 200 feet of width, or 87,120 square feet in AG.
Lot width has its own definition. The required width is "the straight line distance between the side lot lines, measured at the two (2) points where the front building line intersects the side lot lines." The front building line is the line the house may not cross toward the street. So the width is measured at that line.
Ways Below the Minimum
Sec. 2.304 gives four ways to build on, or plat, a lot that misses the table:
- Up to 10 percent of a new subdivision. While it reviews a plat, the Planning and Zoning Commission may reduce the required width or depth of 10 percent of the lots in a single-family subdivision, if each such lot keeps the minimum size. It may instead reduce the minimum size of 10 percent of the lots, if they keep the width and depth. The size reduction "shall not be permitted in the AG district."
- Curved streets. On a "curvilinear street and cul-de-sac," the width at the building line may be less if the average width meets the minimum and "a functional lot is provided."
- Old lots. Sec. 2.304(B) says a single-family home "may be permitted on any lot of official record at the effective date of this ordinance, irrespective of area or width."
- Paired duplex lots. A duplex may be platted on one lot or on "pairs of lots with the lot line through the common wall." Each lot of a pair needs "one-half the required minimum size and width," which is 6,250 square feet and 37.5 feet in D by VanPlex arithmetic.
The Subdivision Ordinance adds one more. Art. V(F)(11) lets the City issue a building permit on a lot "having dimensions of fifty (50) feet by one hundred twenty (120) feet or more, which has been sold by metes and bounds prior to May 15, 1953," if it is on the tax roll and fits the lot pattern and zoning of its block. Metes and bounds means a deed that describes the land by distances and directions instead of a lot number on a plat.
A lot of record, in Sec. 6.102, is "a parcel whose boundaries have been established on a plat approved by the planning and zoning commission and on file in the records of Dallas County." The definition names only Dallas County. Part of Mesquite lies in Kaufman County, where plats are recorded with that county, so a Kaufman County owner relying on Sec. 2.304(B) should ask the Planning Division in writing how the City reads the definition.
Rules for Drawing New Lots
Article V of the Subdivision Ordinance sets the shape of new lots and blocks. These apply in addition to the zoning table:
- "Every lot shall abut a dedicated public street or a private street" (Art. V(F)(2)).
- In residential districts, lots "must conform in width, depth and area to the pattern already established in the adjacent areas" (Art. V(F)(1)).
- "No lot shall be platted less than one hundred (100) feet in depth unless specifically approved in the applicable zoning," though the Commission may waive this for a remnant of an irregular tract (Art. V(F)(5)).
- Lots should have a depth to width ratio "generally not more than two and one-half (2½) to one (1) and in no case more than four (4) to one (1)" (Art. V(E)).
- Where no existing subdivision controls, block lengths "shall not exceed one thousand six hundred (1,600) feet," and block depth should run from 215 to 350 feet, to fit "two (2) tiers of lots back to back to an alley" (Art. V(E)).
- "No lot shall be replatted to reduce the size of lots originally platted by a common dedicator without public hearings and procedures as set out in State law," and no lot may go below its district minimum (Art. V(F)(10)).
Where paved alley access exists, Art. V(B)(2) says required off-street parking "shall be from the alley." No side or rear lot access is allowed from an arterial street, which is a main through road. The plats, permits and fees page covers the replat hearing, the 30-day decision rule and the fees.
Smaller Lots the Code Already Allows
Some Mesquite rules already go below 7,200 square feet, but only inside special districts:
- The townhouse guideline in Sec. 2.502 lists 3,000 square foot lots, 25 feet wide and 100 feet deep, and patio home lots of 5,000 square feet, 50 feet wide and 90 feet deep. Both apply only in a PD district.
- In the TNMR district, Sec. 4.1505 sets the minimum lot width at "twenty-five (25) feet" for detached homes and "sixteen (16) feet for attached structures."
- A mobile home park PD uses lots of "Four thousand (4000) square feet" on a tract of at least 10 acres (Sec. 2.503).
One overlay goes the other way. In the Sherwood Forest Overlay District, Sec. 4.954(B) sets infill lots at 7,200 square feet, 60 feet wide and 110 feet deep, with a home of at least 1,700 square feet, whatever the underlying district says. The downtown and special districts page covers that overlay.
SB 15 in Mesquite
SB 15 added Local Government Code 211.051 to 211.058 on September 1, 2025. Under 211.052 it applies to a city that "has a population of more than 150,000" and "is wholly or partly located in a county with a population of more than 300,000." Mesquite had 150,108 people in the 2020 Census. Most of the city is in Dallas County, which had 2,613,539. A small part is in Kaufman County, which had 145,310; the Census Bureau's Vintage 2025 file puts 210 Mesquite residents there. Because the test asks whether the city lies wholly or partly in a large county, the whole city passes by VanPlex count, the Kaufman County part included. By VanPlex arithmetic the margin is 108 people on the 2020 count, and the more Texas cities page lists Mesquite as a covered city on the same figures.
Inside a covered city, SB 15 reaches only a tract that "will be platted and located in an area zoned for single-family homes," "is five acres or more," and "has no recorded plat." It leaves out land within "3,000 feet of an airport or military base." Chapter 3 of the City Code holds the "Mesquite Metro Airport Hazard Area Zoning Ordinance," so land near Mesquite Metro Airport needs a measured distance before anyone relies on SB 15. Neither the statute nor the City code says where that distance is measured from.
On a tract SB 15 covers, 211.054 bars any rule requiring a lot "larger than 3,000 square feet," "wider than 30 feet," or "deeper than 75 feet." On a "small lot," meaning a residential lot of "4,000 square feet or less," Section 211.055 bars yards over 15 feet in front, 10 feet in back and 5 feet on the side, covered parking, "more than one parking space per unit," and any rule requiring "fewer than three full stories." The City may still require a shared driveway, permit fees equal to those for a single-family lot, and impact fees.
Mesquite has not rewritten its code for the law. The Council received a "briefing regarding Senate Bill 15 (Small Lot Developments) and Senate Bill 840 (Multifamily Developments)" at its work session on September 15, 2025. The minutes record the item and nothing more, and the item titles on Legistar through October 5, 2026 show no ordinance on it. So the Mesquite text and the statute now disagree on covered land. The statute controls:
| Rule | Mesquite text | SB 15 limit on covered land | Sections |
|---|---|---|---|
| Lot size | 7,200 sq ft (R-3) to 43,560 sq ft (AG) | No more than 3,000 sq ft | MZO 2.302; LGC 211.054(1)(A) |
| Lot width | 60 ft (R-3) to 150 ft (AG) | No more than 30 ft | MZO 2.302; LGC 211.054(1)(B) |
| Lot depth | 110 ft (R-3); 100 ft in the Subdivision Ordinance | No more than 75 ft | MZO 2.302; App. B V(F)(5); LGC 211.054(1)(C) |
| Front and rear yards | 25 ft front, 25 ft rear (R-3) | No more than 15 ft front and 10 ft back on a small lot | MZO 2.302; LGC 211.055(a)(1) |
| Side yard | 5 ft interior (R-3) | No more than 5 ft on a small lot | MZO 2.302; LGC 211.055(a)(1)(B) |
| Covered parking | Two-car garage on lots platted since October 1, 1984 | None may be required on a small lot | MZO 2.401(C); LGC 211.055(a)(2) |
| Parking spaces | Two per home | No more than one per unit on a small lot | MZO 2.401(A); LGC 211.055(a)(3) |
| Stories | 35 ft or 2.5 stories, whichever is less | May not require fewer than three full stories on a small lot | MZO 2.302; LGC 211.055(a)(6) |
Source: Mesquite Zoning Ordinance Sec. 2.302 and Sec. 2.401, Subdivision Ordinance Art. V(F), and Local Government Code 211.054 and 211.055.
The statute names neither of two other City rules: the minimum home size of 1,500 square feet in R-3, and the Subdivision Ordinance rule that new lots match "the pattern already established in the adjacent areas." Section 211.055(a)(9) bars "any other zoning restriction" that is inconsistent with the small lot limits, and 211.056 keeps rules "applicable to all similarly situated lots or subdivisions." Whether those two rules survive on a small lot is a legal question VanPlex cannot answer. SB 15 also keeps deed restrictions and homeowners association rules in force (211.057), and it does not affect rules on "flooding, sewer facilities, or well water" on a single lot (211.053).
Best For
- ✓ An R-3 lot of 14,400 sq ft and 120 feet of width, which can split into two 7,200 sq ft lots if the block pattern fits.
- ✓ An old lot of record below the minimum, where Sec. 2.304(B) allows one house.
- ✓ An unplatted tract of 5 acres or more zoned single-family and well away from Mesquite Metro Airport, for SB 15 lots of 3,000 sq ft.
Usually Fails When
- ✕ Either new lot after a split would fall under the district width or size.
- ✕ The tract is within 3,000 feet of the airport and the plan relies on SB 15.
- ✕ Deed restrictions on the subdivision forbid the split or the smaller lots.
What To Verify Before Spending Money
- → The district on the zoning map and whether a PD ordinance sets other lot sizes.
- → Whether the lot was platted before or after October 1, 1984, for the garage rule.
- → A written City measurement of the distance to Mesquite Metro Airport.
Where to Go Next
Related on VanPlex: the Mesquite overview, SB 15 small lots and more Texas cities.
Frequently Asked Questions
What is the minimum lot size for a house in Mesquite, Texas?
Can I split my Mesquite lot into two smaller lots?
Can I build a house on an old Mesquite lot that is smaller than the minimum?
Does SB 15 apply in Mesquite?
Which Mesquite land does SB 15 reach?
Has Mesquite changed its lot rules for SB 15?
How deep must a new Mesquite lot be?
Can the Mesquite Planning and Zoning Commission approve smaller lots on a plat?
How is lot width measured in Mesquite?
How big are townhouse lots in Mesquite?
Official sources (checked October 2026)
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