Neighborhood guide · Santa Rosa Valley, CA 93012

Rancho Santa Rosa

Rancho Santa Rosa is the large-lot, horse-friendly community at the center of Santa Rosa Valley, spread along East Las Posas, Presilla and Barranca roads between Santa Rosa Road and the Las Posas Hills. A corporation named Rancho Santa Rosa recorded its first tract maps in 1968 and redrew parts of them through 1977. About 310 homes now sit on lots of one to five acres and more.

Updated October 16, 2026 · Sources at the bottom of the page · Corrections: send a correction

At a glance

Rancho Santa Rosa quick facts

Where	Central and north-central Santa Rosa Valley between Santa Rosa Road and the Las Posas Hills, around East Las Posas Road, Presilla Road, Barranca Road, Redondo Avenue and Pradera Road. It includes Escollera Avenue and Circle, the Cajon, Subida and Chestnut streets, and the Los Pinos, Los Cedros, Los Fresnos, Palo Verde and Las Posas circles. The association clubhouse is at 11701 E. Las Posas Rd.
City / jurisdiction	Unincorporated Ventura County · ZIP 93012
Built	Tract maps recorded 1968–1977, plus one small private resubdivision in 1981
Builders	Rancho Santa Rosa, a California corporation (subdivider of record on the 1968–1977 maps)
Homes	about 310
Home types	Single-family homes on large lots. Lots run about one to two acres in the 1970s resubdivisions and about five acres or more in the original 1968–69 units.
Gates	Not gated
HOA	Rancho Santa Rosa Property Owners Association, Inc. — The 1970s tract maps name the association as an easement holder, including an equestrian easement on Tract 2412-4. Its clubhouse at 11701 E. Las Posas Rd. was the Santa Rosa Valley Municipal Advisory Council's regular meeting place for years. By January 2024 the council was meeting at Santa Rosa Technology Magnet School. Sales records for a Los Pinos Circle home in 2026 showed association dues of $640 a year.
Tracts	5 named tracts and sub-neighborhoods (list)
Parks nearby	Santa Rosa Valley Park, Conejo Canyons Open Space (Hill Canyon trails)
School district	Pleasant Valley School District, Oxnard Union High School District, Moorpark Unified School District (a small part of the CDP only), Somis Union School District (scattered ranch parcels west of the advisory-council area only)

Pins are approximate centers. Outlines are recorded tract maps from county GIS; tap one for its guide. Some later tract maps re-divide lots of earlier ones, so those outlines overlap.

About

Living in Rancho Santa Rosa

It began as six units of Tract 2016, recorded in 1968 and 1969, with 201 lots of about five acres along Presilla Road, Escollera Avenue and the nearby circles. From 1971 to 1977 the same company redrew parts of those units into one- to two-acre lots (Tracts 2104 and 2412) along Barranca Road, Pradera Road, Redondo Avenue and the Los Pinos-area circles. In 1975 it turned hillside lots north of Presilla Road back into acreage. The streets were dedicated to the county, so the community is not gated.

The 1970s maps name the Rancho Santa Rosa Property Owners Association, Inc. as an easement holder. For years its clubhouse at 11701 East Las Posas Road was where the Santa Rosa Valley Municipal Advisory Council met; by 2024 the council was meeting at Santa Rosa Technology Magnet School. Camrosa County Water District signed the maps as an easement holder, and addresses use Camarillo 93012.

The lay of the land

Rolling valley floor and foothill lots on quiet loops and cul-de-sacs, with views to the Las Posas Hills. The tract maps record equestrian easements, and many lots are horse property.

On this page, "Rancho Santa Rosa" means the land the Rancho Santa Rosa corporation subdivided from 1968 to 1977, plus one 1981 resubdivision of its lots. The property owners association has not published a membership boundary.

Inside the neighborhood

Tracts & sub-neighborhoods of Rancho Santa Rosa

The named tracts, villages and gated enclaves residents, HOAs and the MLS use inside the neighborhood, each with its own page.

Rancho Santa Rosa 10Rancho Santa Rosa, a California… · built 1977 · about 60 homes

Tract 2016Rancho Santa Rosa, a California… · built 1968–1975 · about 95 homes

Tract 2104Rancho Santa Rosa, a California… · built 1971–1972 · about 50 homes

Tract 2412Rancho Santa Rosa, a California… · built 1975–1977 · about 100 homes

Tract 3243Private owner of record · built 1981 · 7 homes

Missing a tract? Tell us its name and we'll research it.

Schools

Schools near Rancho Santa Rosa

School attendance areas

Pleasant Valley School District
From PVSD's Tract Code Book (2025-26 columns), for the streets listed on this guide's tract pages:

Elementary and middle: Santa Rosa Technology Magnet School (all 3 tracts)

Oxnard Union High School District
On OUHSD's attendance-boundary map for 2026-27 (layer last edited September 7, 2023), the recorded tract outlines in this guide fall in:

High: Adolfo Camarillo High School (all 5 tracts)

Moorpark Unified School District
From MUSD's list of schools:

Elementary and middle: MUSD publishes attendance areas only through its online locator
High: Moorpark High School (The district's only comprehensive high school; MUSD publishes no high school boundary, and The High School at Moorpark College admits by application)

These come from the district's own data, not from this site; each tract page has its own answer. Assignment goes by address. Confirm with Find Your Neighborhood School (Tract Code Book), OUHSD Boundary Locator and MUSD School Locator, or check an address here.

Public schools nearby

Santa Rosa Technology Magnet School (Pleasant Valley School District, TK–8)

Being nearby doesn't mean a school is assigned. Attendance goes by address and boundaries change; confirm with the district.

Pleasant Valley School District: find the assigned schools for an address
Oxnard Union High School District: find the assigned schools for an address
Moorpark Unified School District (a small part of the CDP only): find the assigned schools for an address
Somis Union School District (scattered ranch parcels west of the advisory-council area only): find the assigned schools for an address

Living here

Services, representation & fire safety

These are Santa Rosa Valley's area-wide providers; some vary by street.

Police	Ventura County Sheriff's Office – Moorpark Station 805-532-2700 · Station at 610 Spring Rd, Moorpark. Its patrol division covers the City of Moorpark and the unincorporated Moorpark, Simi Valley and Santa Rosa Valley areas. The CHP's Moorpark Area office handles traffic on the valley's county roads and gives reports at advisory council meetings.
Fire	Ventura County Fire Department (Ventura County Fire Protection District) There is no station inside the advisory-council area. The closest county stations are Station 40 (Mountain Meadows, Moorpark), just over the hills to the north, and Station 34 (North Thousand Oaks). Station 52 (Mission Oaks) and Station 57 (Somis) sit toward Camarillo and Somis.
Water	Camrosa Water District 805-388-0226 · County GIS places the whole advisory-council area inside Camrosa. The district was established July 24, 1962. Its first customers were ranchers taking imported water from the Calleguas pipeline.
Sewer	Private onsite septic systems (most homes) Most of the valley has no public sewer. Septic limits and groundwater nitrates come up at advisory council meetings, including in debates over ADU and JADU rules.
Electric	Southern California Edison Edison treats the valley as a high fire-risk area, and Public Safety Power Shutoffs are a regular advisory council topic; SCE gave the council a shutoff update in July 2026. At a 2023 meeting, residents said one circuit feeds most of the valley, and Edison said undergrounding every line in the valley is not feasible.
Gas	SoCalGas SoCalGas is the region's natural-gas utility. A local real-estate team reports that many acreage homes in the valley heat with propane instead of piped gas, so confirm what a specific property uses.
Trash	E.J. Harrison & Sons (County franchise, Santa Rosa Valley service area) County franchise maps place most of the valley in E.J. Harrison's Santa Rosa Valley service area. The Nightsky Drive area on the eastern edge falls in G.I. Disposal's Moorpark-area franchise instead.
Parks	Ventura County Parks Department The county runs Santa Rosa Valley Park. The advisory-council area sits outside both the Pleasant Valley and Conejo recreation and park districts. Only the farmland to the west, toward Camarillo, is inside Pleasant Valley Recreation and Park District.
Library	Nearby public libraries: Moorpark City Library, Grant R. Brimhall Library (Thousand Oaks) and Camarillo Public Library The valley has no library of its own. The nearest are Moorpark City Library at 699 Moorpark Ave (805-517-6370) and Grant R. Brimhall Library at 1401 E. Janss Rd, Thousand Oaks (805-449-2660). Camarillo Public Library at 4101 Las Posas Rd is another option from the west end.
Animal services	Ventura County Animal Services Covers all unincorporated areas. The main shelter is at 600 Aviation Dr, Camarillo, and a smaller shelter is at 670 W. Los Angeles Ave, Simi Valley.
Planning and permits	Ventura County Resource Management Agency Without a city, County departments handle zoning, building permits and code enforcement in the valley.
Community advisory body	Santa Rosa Valley Municipal Advisory Council Five elected residents advise the supervisor and the Board on public safety, public works, public health and planning. Meetings start at 6 p.m. on the third Thursday of odd-numbered months, in the multipurpose room at Santa Rosa Technology Magnet School, 13282 Santa Rosa Rd. Each agenda confirms the location.
Emergency alerts	VC Alert (Ventura County Sheriff's Office of Emergency Services) 888-772-4482 · Free address-based alerts by phone, text, email or TTY, in English and Spanish. Sign up at vcalert.org, by phone or by emailing vc.alert@ventura.org.

Who represents you: No city council. The Santa Rosa Valley Municipal Advisory Council has five elected residents serving staggered four-year terms. Since early 2024 it has met at 6 p.m. on the third Thursday of odd-numbered months at Santa Rosa Technology Magnet School, 13282 Santa Rosa Rd; the next 2026 meeting is November 19. Before 2024 it met at the Rancho Santa Rosa clubhouse, 11701 E. Las Posas Rd. Agendas and minutes are posted on Supervisor Gorell's advisory-council page. · Ventura County Supervisorial District 2: Jeff Gorell, chair of the Board of Supervisors in 2026. First elected in 2022, he won re-election outright in the June 2, 2026 primary with about 53 percent of the vote, so the seat is not on the November ballot. Full list for Santa Rosa Valley.

Fire safety: Fire hazard: CAL FIRE/OSFM maps put nearly every home in the valley in a Very High Fire Hazard Severity Zone. Most neighborhoods, including Rancho Santa Rosa, Presilla Road, Bridlewood, Hidden Meadows, Lexington Hills, Santa Rosa Highlands and Camelot… More.

Nearby

Other neighborhoods in Santa Rosa Valley

Bridlewood Camelot Estates Hidden Meadows Estates Lexington Hills Rancho Las Brisas Saddlebrook Santa Rosa Estates Santa Rosa Highlands Santa Rosa Valley Estates Valley Estates Westwind Ranch Wildwood Ranch 