Hesperia | Lot size and subdivisions
Hesperia, California Lot Size and Subdivisions: Lot Sizes From the Map, Small Lot Subdivisions, Parcel and Tract Maps, SB 9 Lot Splits and Small-Lot Maps
A subdivision is the division of one piece of land into two or more lots that can be sold separately. The City's Housing Element says most house lots in the core of Hesperia range "from 18,000 square feet to one acre." Whether such a lot can be divided depends on the lot size printed on the land use map, on the lot widths in the Development Code, on sewer service, and on two state laws that Hesperia's code does not mention. This page covers lot standards in Title 16, the map rules in Title 17, and the state lot split laws. The Hesperia overview has the summary.
Hesperia lots and subdivisions in six facts
- The minimum lot size in R1, RR, A1 and A2 is the number printed after the designation on the General Plan land use map. Source: HMC 16.16.120
- A new R1 or RR lot must be 60 feet wide at the setback line and 100 feet deep; a corner lot must be 70 feet wide. Source: HMC 16.16.120
- Small lot subdivisions in R1 allow lots of 4,500 square feet, or 3,000 square feet with a 4,000 average on projects of 10 acres or more. Source: HMC 16.16.125
- Tentative and final maps are required for subdivisions that create five or more parcels; smaller divisions use a parcel map. Source: HMC 17.08.010
- The City must act on a tentative map within 50 days after the application is deemed complete, and an approval lasts 36 months. Source: HMC 17.08.040
- Hesperia's code has no section on SB 9 urban lot splits, so Government Code 66411.7 applies directly, with a 60-day decision. Source: Gov. Code 66411.7
Lot Size, Width and Depth for New Lots
Section 16.16.120 sets the standards "for new lots." For R1, RR, A1 and A2 its lot area cell reads "The minimum lot area is identified on the General Plan Land Use Map." The number after the designation is the size: under 100 it means acres, and over 100 it means square feet. The widths and depths below come from the same table, from Section 16.16.125 and from Chapter 7 of the Main Street and Freeway Corridor Specific Plan.
| Where | Minimum area | Width | Depth | Corner lot width |
|---|---|---|---|---|
| R1 and RR | The number on the land use map | 60 ft at the setback line | 100 ft | 70 ft at the setback line |
| R1 small lot subdivision, project under 10 acres | 4,500 sq ft net | 50 ft | 75 ft | 60 ft |
| R1 small lot subdivision, project of 10 acres or more | 3,000 sq ft net, with a 4,000 sq ft average | 40 ft | 60 ft | 50 ft |
| A1 | The number on the land use map | 100 ft | None | 100 ft at the setback line |
| A2 | The number on the land use map | 300 ft | None | 300 ft |
| R3 | 5 acres | 300 ft | 500 ft | 300 ft |
| Specific Plan, Low Density Residential | 7,200 sq ft net | 60 ft | 100 ft | 70 ft |
| Specific Plan, Very Low Density Residential | 18,000 sq ft net | 100 ft | 150 ft | 110 ft |
Sources: Hesperia Municipal Code 16.16.120 and 16.16.125 (Supplement 24 Update 2); Main Street and Freeway Corridor Specific Plan, Chapter 7 (posted copy, amended through July 15, 2021).
- Net or gross area. Section 16.16.115 uses net lot area "in the R1 and R3 designations and for properties below one acre in the RR designation," and gross lot area in A1, A2 and on RR lots of one acre or more. Gross area includes land for streets and easements. Net area leaves out proposed public streets and alleys.
- How width is measured. Section 17.48.010 says "All required lot widths, whether on rectangular, pie-shaped or other irregular lots, are measured at the required building setback line." On an irregular lot the other dimensions are met "by the average dimensions of the lot."
- R3. The 5-acre, 300-foot and 500-foot minimums carry a note: they "shall not apply to townhome and condominium units."
- Existing small lots. Section 17.48.030 says "Any legally created parcel having an area, width or depth less than that required" by the code "may be used or built upon, provided the development otherwise conforms to the requirements of this code."
- Frontage for a permit. Section 16.12.065 says "A building permit shall not be issued for a residential building or structure on a lot which does not have a minimum frontage of forty (40) feet unless otherwise approved in a planned development," with access on a street "acceptable to the city engineer."
Small Lot Subdivisions
Section 16.16.125 allows smaller house lots in R1 "by which densities are supported in the general plan." The section says these tracts "are primarily developed and constructed by a single development entity as for-sale housing." Its rules:
- Lot sizes. "For projects less than ten acres," an interior lot needs 50 feet of width, 75 feet of depth and "a minimum net area of four thousand five hundred (4,500) square feet"; a corner lot needs 60 feet of width. "For projects ten acres or more," the lots need "A minimum net area of three thousand (3,000) square feet and an average net area of four thousand (4,000) square feet," with 40 feet of width and 60 feet of depth, or 50 feet of width on a corner.
- Yard and open space. "A minimum of two hundred (200) square feet per dwelling unit with no dimension less than ten feet" of private yard, and "A minimum of five hundred (500) square feet per residential unit" of common open space. Drainage basins do not count toward the common space.
- Driveways. A driveway depth of 20 feet and a width of 16 feet, so parked cars stay off the sidewalk.
- Streets. "All streets within a small lot subdivision shall be fifty-four-foot right-of-way and thirty-foot curb-to-curb," with a four-foot sidewalk, and "All streets within small lot subdivisions shall be public."
- Sewer and sales. "Connection to sewer is required," and "No undeveloped residential lot sales will be allowed, developer shall construct all homes within small lot subdivisions."
- House size. Section 16.20.160 sets a minimum habitable floor area of 800 square feet for houses in small lot subdivisions, against 1,000 square feet for other detached houses.
Inside the Specific Plan area the rules differ on three points. Section B.5 of Chapter 7 says "The project size of a Small Lot Subdivision shall be a minimum of 10 acres." It gives a density of 5 to 8 homes per acre in the Low Density zone and 8 to 12 in the Medium Density zone, with 4,500-square-foot lots in the first and 3,000-square-foot lots in the second. Its streets are "54-foot right-of-way and 32-foot curb-to-curb," two feet wider between curbs than the Title 16 rule. Small lot subdivisions are prohibited in the plan's Very Low Density and High Density zones.
Exceptions and Flexible Lot Design
- Combining lots. Under Section 17.48.040, when two or more legal lots are combined to make a building site that "will more nearly meet the lot area requirements," the result "shall be deemed to have met the applicable area requirements."
- Land taken for roads. Where a public agency has reduced a lot "to not more than twenty-five (25) percent below the minimum requirements" for a road, drain or other public purpose, "the lot area existing before reduction shall be what counts."
- Alleys. "One-half the width of such alley(s) may be assumed to be a portion of the lot."
- Apartment and mobile home sites. "The subdivision of multiple-family dwellings and mobile home parks that are the subject of an approved site approval shall not be held to the minimum area requirements of the district."
- Divisions by fraction of a section. Section 17.48.060 allows parcels "ten percent less than those required" where there are topographical constraints or where the lots are created by aliquot part, a division of a survey section into equal fractions.
- Alternative design. Section 17.48.070 aims "To preserve, to the maximum extent possible, dense stands of Joshua trees, junipers, yuccas and related native vegetation." It allows lots below the minimum "as long as the average lot size within any phase of a tentative map meets the requirements of the zone," and "In no case shall any lot be smaller than eighty (80) percent of the required minimum lot size."
- Planned developments. Chapter 16.32 lets a planned residential development of "five hundred (500) dwelling units or fewer" change the zone's standards and mix attached and detached homes. Density stays at the General Plan figure. Under Section 16.12.145 "The planning commission shall make a recommendation and the city council shall act upon all proposed planned developments."
Which Map, and Who Decides
A tentative map is the proposed layout the City reviews. A final map or parcel map is the surveyed map recorded with the county once conditions are met. Section 17.08.010 says "Tentative and final maps shall be required for all subdivisions creating five or more parcels," and a parcel map is required for the divisions excepted from that rule. Section 17.12.050 describes the parcel map process for dividing land "into four lots or less with or without a remainder parcel."
| Application | When | Who decides | Fee from December 1, 2025 |
|---|---|---|---|
| Lot line adjustment, lot merger, certificate of compliance | No new lot is created | Staff, administrative review without notice | $312 |
| Tentative parcel map, residential | Four lots or fewer, with or without a remainder | Development Review Committee, administrative review with notice | $826 plus $2 per lot |
| Tentative tract map | Five or more parcels | Planning Commission, public hearing | $3,481 plus $2 per lot |
| Final parcel map review | After a tentative parcel map is approved | City Engineer | $1,586 |
| Final tract map review | After a tentative tract map is approved | City Engineer; the City Council approves final tract maps by resolution | $1,570 plus $35 per lot |
Sources: Hesperia Municipal Code 16.12.405, 16.12.460, 17.08.010 and 17.12.050; City-Wide Fee Schedule, Sections 190 and 201. A 10 percent technology fee is added to each fee.
- Review bodies. Section 16.12.405 sends subdivision applications to the Planning Commission at a public hearing, with listed exceptions. "Parcel maps creating four and a remainder or fewer parcels" and maps "consistent with an approved specific plan or planned development" go to administrative review with notice, decided by the Development Review Committee, a body of City departments. Lot line adjustments, lot mergers and certificates of compliance go to administrative review without notice.
- Waiving the parcel map. Under Section 17.12.010 the planning director may waive the parcel map "where two, three, or four parcels and any remainder parcel are involved, and the smallest parcel created is two and one-half (2 ½) gross acres," after findings on eleven topics that include flood water drainage, improved public roads, sanitary disposal and potable water.
- Findings. The City must find eight things true, among them that "The site is physically suitable for the proposed density of development" and that the design conforms to the Development Code.
- Time to decide. Section 17.08.040 requires action "within fifty (50) days after an application for a tentative map has been deemed complete." If the City takes no action in time, the map "shall be deemed to be approved insofar as it complies with other applicable requirements." Where an environmental impact report is prepared, the City acts within 45 days after the report is certified.
- Expiry. An approved tentative map "shall expire thirty-six (36) months after its approval." The same paragraph says "No extensions of time are allowed for residential subdivisions."
- Appeals. An appeal of a tentative map decision "shall be filed within ten days after the action."
Design Standards and Conditions
Section 17.04.060 lists the standards a map must meet.
- Lot shape. Side lines "shall be approximately normal to street lines," meaning at a right angle. A lot on a dead-end or curved street needs "an average width of not less than sixty (60) feet, or that width required by the development code, whichever is greater."
- Larger lots. "In desert areas or in hilly or mountainous land, the planning agency may require lots larger than required minimums."
- Streets. "Cul-de-sacs shall not exceed six hundred (600) feet in length" unless the planning agency finds a longer one safe. "Road grades shall not exceed twelve (12) percent." A subdivision "shall have two points of vehicular ingress and egress," one of which may be for emergencies only.
- Improvements before permits. Section 16.20.161, added in 2024, says "No Building permit shall be issued until" all public improvements "have been fully completed, dedicated, and accepted, or if allowed, security has been posted."
- Parks. Section 17.52.010 requires park land, a fee in its place, or both, as a condition of a tentative map and of building permits. The fee schedule lists the park fee for new tracts and subdivisions at $5,486.50 per unit, which includes a $25 administrative fee.
- Sewer. Section 14.08.020 requires a public sewer connection for "Projects that exceed two equivalent dwelling units (EDU)/acre density." A division of a septic lot can pass that line. See the sewer, septic and flood page.
- Flood. Section 8.28.050 says "All preliminary subdivision proposals shall identify the special flood hazard and the elevation of the base flood."
Lot Line Adjustments, Mergers and Certificates
A lot line adjustment moves the line between neighboring lots and creates no new lot. Under Section 17.24.020 the planning director may approve one after finding it "consistent with the general plan, development code, and any applicable community and specific plans" and that it "will not adversely affect public health and safety." A current preliminary title report is required, and Section 17.36.010 requires a recorded certificate of compliance for every lot line adjustment.
A merger joins lots under one owner into one. Section 17.28.020 lets an owner ask for one. Section 17.28.010 lets the City start one where a lot is below the size standard and, for example, "comprises less than five thousand (5,000) square feet in area" or "does not meet current standards for sewage disposal and/or domestic water supply." The planning fee for a lot line adjustment, a lot merger or a certificate is $312 each.
SB 9 Urban Lot Splits
SB 9 is a 2021 state law. One part, Government Code 66411.7, lets the owner of a lot in a single-family zone split it in two with staff approval and no hearing. A search of Titles 16 and 17 of the Hesperia code, as published through December 5, 2025, found no section on urban lot splits and no mention of Section 66411.7. The City's Applications, Fees and Handouts page lists no urban lot split form, and the fee schedule has no line for one. The statute applies directly. Its main terms, as amended effective June 30, 2026:
- Two lots. The map creates "no more than two new parcels of approximately equal lot area provided that one parcel shall not be smaller than 40 percent of the lot area of the original parcel."
- Lot size. "Both newly created parcels are no smaller than 1,200 square feet," unless a city adopts a smaller figure. Hesperia has adopted none.
- Where. The parcel must be "located within a single-family residential zone" in a city that includes part of an urbanized area. Hesperia's R1 designation is named Single-Family Residence. The City has not published which other designations it treats as single-family zones; Section 16.16.075 describes RR as "intended for detached single-family residential uses."
- Time. The application "shall be considered and approved or denied within 60 days from the date the local agency receives a completed application," or it "shall be deemed approved."
- No off-site work. A city "shall not impose regulations that require dedications of rights-of-way or the construction of offsite improvements" for the new parcels.
- Homes. A city "shall not be required to permit more than two units on a parcel created" this way, and may not set standards that prevent two homes of 800 square feet on each new lot. Side and rear setbacks may be up to four feet.
- Owner statement. The applicant signs an affidavit that they intend "to occupy one of the housing units as their principal residence for a minimum of three years."
- Tenants. A split may not require demolishing or altering "Housing that has been occupied by a tenant in the last three years."
Two Hesperia conditions matter for a split. First, sewer: the statute for the homes, Government Code 65852.21, lets a city require "a percolation test completed within the last 5 years" for homes on a septic system, and Hesperia's sewer rule may require a connection once the number of homes on the land rises. Second, the map: because Hesperia has no local procedure, ask the Planning Division in writing which application form and fee it uses, and note the date it accepts the application as complete, since the 60 days run from that date.
Small-Lot Maps Under SB 684 and SB 1123
The state small-lot map law, covered on the SB 684 and SB 1123 page, is Government Code 66499.41. It requires staff approval, with no hearing, of a map with "10 or fewer parcels" and 10 or fewer homes. Hesperia's code has no section for it. The version in force through December 31, 2026 applies to a lot "Zoned to allow multifamily residential dwelling use" that is "no larger than five acres," and to a vacant single-family lot "no larger than one and one-half acres." New parcels are "no smaller than 600 square feet," or 1,200 square feet in a single-family zone, and the City must decide "within 60 days."
One requirement limits its use in Hesperia. The statute says "Any parcels proposed to be created pursuant to this section will be served by a public water system and a municipal sewer system." A lot that depends on a septic system does not qualify until it has sewer service. The statute also treats housing "occupied by tenants within the five years preceding the date of the application" as not vacant. An amended version takes effect on January 1, 2027; check the state page for its terms before filing after that date.
Where the Documents Differ
- Extensions of time. Section 17.08.040(E) says "No extensions of time are allowed for residential subdivisions." Subsection (F) says "The planning director may approve extensions of time for a period or periods not exceeding a total of thirty-six (36) additional months unless otherwise provided by the development code." Section 16.12.095 also bars extensions for residential site plans. Read together, the bar in subsection (E) is the specific rule for residential maps. Ask the Planning Division to confirm.
- The City page and the five-lot line. The City's Development Process page describes Planning Commission review of "subdivisions (tentative tracts over five lots)." Section 17.08.010 requires a tentative and final map for "five or more parcels." The code controls.
- Small lot subdivisions. Title 16 allows a small lot subdivision on a project under ten acres. The Specific Plan requires ten acres and a wider street. Each rule applies in its own area.
- County wording. Parts of Title 17 still name county officers. Section 17.04.040 allows map corrections "as approved by the county surveyor," and Section 17.08.010 says "the county shall inform the applicant in writing." The history notes of those sections cite "SBCC" section numbers. Ask the Planning Division which City officer performs each duty.
Best For
- ✓ Large R1 and RR lots with sewer, where a parcel map of four lots or fewer is decided by staff after notice.
- ✓ R1 sites of 10 acres or more, where small lots of 3,000 square feet with a 4,000 average are allowed.
- ✓ Single-family lots where an SB 9 split into two lots of at least 1,200 square feet fits.
Usually Fails When
- ✕ A lot on a septic system is divided with no plan for the sewer connection rule.
- ✕ A residential tentative map is left unrecorded past 36 months on the hope of an extension.
- ✕ An SB 684 map is planned for a lot with no municipal sewer service.
What To Verify Before Spending Money
- → The lot size label on the land use map and whether the lot is inside the Specific Plan.
- → In writing, how the Planning Division processes an SB 9 urban lot split and what it charges.
- → Sewer and water availability with the Engineering Division at (760) 947-1438.
Where to Go Next
Related on VanPlex: the Hesperia overview, the SB 9 page and the SB 684 and SB 1123 page.
Frequently Asked Questions
What is the minimum lot size for a house in Hesperia?
How wide does a new house lot have to be in Hesperia?
What is a small lot subdivision in Hesperia?
Do I need a parcel map or a tract map to divide land in Hesperia?
Who approves a parcel map in Hesperia?
How long does a tentative map approval last in Hesperia?
Can I build on a Hesperia lot that is smaller than the minimum size?
Does Hesperia have an SB 9 urban lot split ordinance?
Can I use an SB 684 small-lot subdivision on a Hesperia lot with a septic system?
How much does it cost to file a subdivision map in Hesperia?
Official sources (checked October 2026)
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