Westlake Island is a guard gated island of 326 homes in the middle of Westlake Lake, where most houses back to the water with a private dock and everyone comes and goes over one bridge on La Venta Road, which also happens to be the Los Angeles and Ventura county line. It suits boaters, paddlers and families who want the water at the back door inside a quiet enclave that rarely turns over. Homes sold for about $2.25M to $4.9M in 2025 and 2026, with most closing near $3M.
On a warm evening here the commute to dinner is a boat ride. You step off the patio, untie the line and idle across the lake to one of the three lakeside restaurants, then drift home under the lights of the other circles. There is no through traffic on the island, every trip passes a guard at the bridge, and the street that carries you on and off is literally the line between two counties.
| Homes | 326, most on the water with private docks |
|---|---|
| Built | Late 1960s through the 1970s |
| Price range | About $2.25M to $4.9M in 2025 and 2026 |
| Size | Roughly 1,500 to 5,000 sq ft, 3 to 4 bedrooms, some 5 |
| Gated | Yes, guard gated with a single bridge entry |
| HOA | Westlake Island HOA plus Westlake Lake Management Association assessments |
| City and county | Split between Thousand Oaks (Ventura) and Westlake Village (Los Angeles); all addresses are Westlake Village 91361 |
| Schools | Las Virgenes Unified on the LA side, Conejo Valley Unified on the Ventura side |
Life on the island: docks, circles and one guard gate
Daily life is organized around the water. Most homes back to the lake with their own dock, so kayaks and paddleboards go out early before the breeze picks up, boats head across to the lakeside restaurants at dusk, and neighbors wave from the water as often as from the sidewalk.
The island was shaped with fingers and inlets so that as many lots as possible touch water, which gives the circles a quiet, cul de sac rhythm. There is no through traffic because there is nowhere to go through to. The guard at the bridge sees everyone in and out, and that single entry is a large part of why the island feels like its own small town inside Westlake Village.
Turnover is low. In a typical year somewhere between nine and twenty of the 326 homes change hands, and many of our clients waited for a specific stretch of shoreline or a particular circle before they bought. People move here to stay.
Communities within Westlake Island
- Village Green TownhomesEarly 1970s two-story townhomes on Landsburn Cir, Kirkford Way and Instone Ct on the Thousand Oaks (Ventura County) side of Westlake Village.
- Village Glen TownhomesSingle story 1972 townhomes on Glenbridge, Canterford, Bright Glen, Nottingwood and Stonewall circles on the Thousand Oaks (Ventura County) side of
One bridge, two counties: the story of La Venta
The lake was finished in 1969 by the American-Hawaiian Steamship Company, which built the island partly to recover the cost of the lake by selling waterfront lots. Because the island straddles the Los Angeles and Ventura county line, both counties wanted their own bridge for fire access. Only one bridge was ever approved, so the developer set it right on the line and named the street La Venta, for L.A. and Ventura. When you drive onto the island, you are driving down the county line.
That line keeps going through the island, and it matters:
- Thousand Oaks, Ventura County: Oakshore Drive and the Westwind, Eastwind, Southwind, Redsail and Bluesail Circles.
- City of Westlake Village, Los Angeles County: Whitesail, Mariner, Freshwind and Fairbreeze Circles.
Every home carries a Westlake Village 91361 mailing address, but property taxes, city services and the school district follow the legal side of the line. We confirm which side a home sits on before we talk about anything else.
The homes: vintage lake houses, often rebuilt around the view
The houses date from the late 1960s and 1970s, built when the lake was new, and range from about 1,500 to 5,000 square feet with three or four bedrooms and the occasional five. Many have been renovated over the years, so inside the gate you will find both largely original homes and fully updated ones oriented to the water. Only six double lots exist on the whole island, and they trade rarely.
Prices ran about $2.25M to $4.9M in 2025 and 2026, with most sales settling around $3M. That is roughly double the broader Westlake Village median, and the premium is almost entirely about frontage and the dock. The width of the water view, the orientation of the lot and the condition of the dock move value more than square footage does here.
If you want lake living at a different price point or in a newer house, the mainland waterfront neighborhoods are worth comparing: Southshore and The Shores, Windward Shores and Lakeshore Homes. For the wider market, see our guide to Westlake Village home values.
Schools: the answer changes by street
School assignment depends entirely on which side of the county line the house sits.
- Los Angeles County side (Whitesail, Mariner, Freshwind and Fairbreeze Circles): Las Virgenes Unified, with White Oak Elementary, Lindero Canyon Middle School and Agoura High School.
- Ventura County side (Oakshore Drive, Westwind, Eastwind, Southwind, Redsail and Bluesail Circles): Conejo Valley Unified, with Westlake Elementary, Colina Middle School and Westlake High School.
Two homes a short walk apart can feed different districts, so run the exact address through the district locator before you fall for a house because of its school. For some of our clients the district question decided which circles they toured.
What to know before you buy here
Owning on the island means two sets of obligations beyond the mortgage. The Westlake Island HOA handles the island itself, and the Westlake Lake Management Association governs the lake, docks and boats under its own recorded restrictions and rules. The two are billed separately on different calendars, and the lake association can revoke lake use rights and lien a boat for nonpayment. We order the lake association status letter at the same time as the HOA documents.
- The dock is a permit, not a fixture. It transfers only when the seller is in good standing, so confirm the permit and the allowed boat length for that slip before you remove contingencies.
- Every watercraft needs annual registration, including kayaks, and fishing from your own backyard requires a lake badge.
- Liability insurance is mandatory for dock owners and boat operators, with the lake association named as an additional insured.
- One way on, one way off. Every trip crosses the same bridge and the same guard gate. For most owners that is the point.
Who Westlake Island fits, and who it does not
The island fits people who will actually use the water: boaters, paddlers, families who want kids on the dock after school, and buyers who want privacy without seclusion. It offers quick access to local shops and dining, yet nothing passes your door that does not belong there.
It is a weaker fit if you want a large flat yard, a brand new house or the lowest possible carrying costs. Lots are shaped for frontage rather than acreage, the homes are vintage even when renovated, and the layered assessments are real. For those who can live with that, few places in the Conejo Valley hold their appeal the way this one does. For context on the rest of town, browse our Westlake Village neighborhoods.
Owning in Westlake Island
What a typical home costs to own
About $21,292/month
- Principal and interest$17,992
- Property tax (about 1.2% of price, LA County)$3,300
- HOANone
Estimate for a $3.3M home, near the middle of the recent range here, with 20% down at 7.24% (30 year fixed, Freddie Mac, October 29, 2026). Homeowners insurance is extra and varies with fire zone, so get a quote early. Your lender's figures will differ.
Westlake Village market, latest data
- Median sale price$1.67M
- Change over 12 months+14.9%
- Typical days on market45
Citywide, three months ending May 2026. Westlake Village home values
Our experience here
We have sold homes in Westlake Island and work in the neighborhood regularly. We are glad to share what we are seeing on the ground.
Westlake Village home prices, the last five years
Questions people ask about Westlake Island
Is Westlake Island in Thousand Oaks or Westlake Village?
Both. The Los Angeles and Ventura county line runs along La Venta Road and through the island. Oakshore Drive and the Westwind, Eastwind, Southwind, Redsail and Bluesail Circles are in Thousand Oaks, Ventura County. Whitesail, Mariner, Freshwind and Fairbreeze Circles are in the City of Westlake Village, Los Angeles County. Every home uses a Westlake Village 91361 address.
What school district serves Westlake Island?
It depends on the street. The Los Angeles County circles are in Las Virgenes Unified, feeding White Oak Elementary, Lindero Canyon Middle and Agoura High. The Ventura County streets are in Conejo Valley Unified, feeding Westlake Elementary, Colina Middle and Westlake High. Confirm the exact address with the district before relying on a school.
How much do homes on Westlake Island cost?
Homes sold for about $2.25M to $4.9M in 2025 and 2026, with most closings landing near $3M. That is roughly double the Westlake Village median, and the premium comes from water frontage and the dock. Only a handful of homes sell in any given year, so inventory is thin and often goes to buyers who are ready.
Do Westlake Island homes come with a private dock?
Most homes on the island sit on the water with a private dock, but the dock right is a permit issued by the Westlake Lake Management Association, not part of the deed. It transfers when the seller is in good standing. Boats need annual registration, owners must carry liability insurance, and fishing requires a lake badge.
Is Westlake Island gated?
Yes. The island is guard gated and reached by a single bridge on La Venta Road. There is no other way on or off by car, so there is no through traffic and every visitor passes the guard. Residents treat the one bridge as a feature rather than a drawback.
Can you boat to restaurants from Westlake Island?
Yes. Three lakeside restaurants sit on Westlake Lake and residents regularly take the boat to dinner. The lake is private and run by the Westlake Lake Management Association, so any watercraft, including kayaks, must be registered or permitted by the association each year before it goes on the water.
Thinking about Westlake Island?
Whether you are weighing a move here or wondering what your home would bring, Davis and the team are happy to talk it through, street by street. No obligation.
Sources
- Westlake Lake Management Association: history of the lake and island
- Westlake Lake Management Association: rules and regulations
- Westlake Lake Management Association: nonpayment and boat lien policy
- City of Thousand Oaks: homeowner association map
- The Acorn: Lake Superior, how Westlake Lake was built
- Wikipedia: Westlake Village, California
- Wikipedia: Westlake Lake
- Westlake Village Island community site
Facts checked October 2026.
