Chapter 18.64 — RO RESIDENTIAL OVERLAY DISTRICT (§ 18.64.010 – § 18.64.080)
Pleasanton Zoning Code · 2026-06 edition · ingested 2026-07-06 · Pleasanton
In addition to the objectives prescribed in Section 18.04.010 of this title, the RO residential overlay district is included in this title to achieve the following purposes:
A.
To establish controls in addition to those established in Chapters 18.32, 18.36 and 18.84 of this title, in order to direct the development of large parcels of land in conformance with the residential development policies as set forth in the general plan adopted by the city council;
B.
To ensure variety and a mixture of housing types, densities and lot sizes in large developments. (Prior code § 2-8.14)
An amendment to reclassify property to an RO district may be initiated by the owner, the planning commission, or the city council. It is the intent of this section that the commission shall initiate RO Districts in predominately undeveloped areas where the application of the requirements of this chapter would contribute toward achievement of the objectives prescribed in Section 18.04.010 of this title, and the purposes prescribed in Section 18.64.010 of this chapter.
(Prior code § 2-8.15)
A.
The RO district shall be established only in conjunction with other districts, but shall not be combined with a PUD district. An RO district shall overlay whatever other district designation is applicable to the area in which the RO district is established.
B.
The provisions of this chapter shall apply in RO districts, which districts shall also be subject to other provisions of this title, including the provisions applicable to the particular district underlying an RO district, provided that where regulations conflict, the provisions of this chapter shall control.
C.
An application to amend the ordinance codified in this chapter so as to change district boundaries underlying an RO district shall not be construed as a request to change the boundaries of the RO district unless such change is specifically requested in the application.
D.
The requirements of the RO district shall not apply to developed residential lots, to property included in a recorded final subdivision map or valid approved tentative subdivision map, or to annexed territory in which the development pattern has been specifically committed by an annexation agreement. The requirements of the RO district shall apply to property included in an expired tentative subdivision map. Parcels less than five acres on the effective date of the ordinance codified in this chapter, May 3, 1968, may be exempted from the requirements of the RO district, provided that the planning commission shall find that the exemption will not be detrimental to achievement of the purpose of this chapter.
(Prior code § 2-8.16)
Where subdivision and initial development of land after the effective date of the ordinance codified in this chapter, is proposed, the lot size yard requirements and density controls provided in Table 18.64.040 shall apply, in addition to those of the underlying district.
| Table 18.64.040 LOT SIZE REGULATIONS AND AVERAGE DENSITY |
Table 18.64.040 LOT SIZE REGULATIONS AND AVERAGE DENSITY |
Table 18.64.040 LOT SIZE REGULATIONS AND AVERAGE DENSITY |
Table 18.64.040 LOT SIZE REGULATIONS AND AVERAGE DENSITY |
Table 18.64.040 LOT SIZE REGULATIONS AND AVERAGE DENSITY |
|
|---|---|---|---|---|---|
| Basic Zoning Requirements | RO Requirements | ||||
| Basic Zoning | Minimum Lot Size |
Average Lot Size Single- Family Detached Dwelling |
Average Gross Density Dwelling Units Per Gross Residential Acre (See Section 18.64.060) |
Increase | Side Yard Total Both Sides |
| R-1-40,000 | 40,000 sq. ft. | 40,000 sq. ft. | 1.0 | -- | Same |
| R-1-20,000 | 20,000 sq. ft. | 20,000 sq. ft. | 2.0 | -- | Same |
| R-1-10,000 | 10,000 sq. ft. | 12,000 sq. ft. | 2.8 | 5 ft. | 23 ft. |
| R-1-8,500 | 8,500 sq. ft. | 10,000 sq. ft. | 3.6 | 5 ft. | 21 ft. |
| R-1-7,500 | 7,500 sq. ft. | 9,000 sq. ft. | 4.1 | 5 ft. | 19 ft. |
| R-1-6,500 | 6,500 sq. ft. | 8,000 sq. ft. | 4.7 | 5 ft. | 17 ft. |
| RM-4,000 | 8,000 sq. ft. | -- | -- | -- | Same |
| RM-2,500 | 7,500 sq. ft. | -- | -- | -- | Same |
| RM-2,000 | 10,000 sq. ft. | -- | -- | -- | Same |
| RM-1,500 | 10,000 sq. ft. | -- | -- | -- | Same |
(Prior code § 2-8.17)
The increased requirements set by the RO district in Section 18.64.040 shall have no further force or effect upon an individual residential lot after construction and actual occupancy of the single-family dwelling. (Prior code § 2-8.18)
Within the limitations of minimum lot size of the underlying zoning and the average lot size established by Section 18.64.040, the average gross residential density established by Section 18.64.040 for the particular underlying basic zoning may be achieved by the establishment of small RM districts, unless the planning commission finds that such districts in a particular area would be detrimental to the orderly development of the area and inconsistent with the purposes in Section 18.64.010.
(Prior code § 2-8.19)
RM districts should be located throughout the residential area on thoroughfares or collector streets, and should be used as transitional development between neighborhood commercial areas and R-1 residential areas. RM districts within a tract that are not used as transitional development shall not be larger than three acres per district and separation shall be 300 feet or more. An RM district used as a transitional development shall not exceed six acres. RM districts surrounded by R-1 districts shall be RM-4,000 or RM-2,500. RM districts used as transitional developments shall be RM-4,000, RM-2,500 or RM-2,000. (Prior code § 2-8.20)
In addition to the requirements established by Article III of Chapter 18.12 of this title wherever an RO district is established, any subsequent application for change of the underlying zoning shall be accompanied by an area plan submitted for planning commission approval in conjunction with the rezoning request. Such area plan shall include lot patterns, street systems, location and size of RM districts, and density calculations to
lished by Article III of Chapter 18.12 of this title wherever an RO district is established, any subsequent application for change of the underlying zoning shall be accompanied by an area plan submitted for planning commission approval in conjunction with the rezoning request. Such area plan shall include lot patterns, street systems, location and size of RM districts, and density calculations to
clearly demonstrate that the average gross residential densities prescribed in Section 18.64.040 have not been exceeded.
(Prior code § 2-8.21)