Castaic anchors the north end of the SCV near Castaic Lake — unincorporated LA County with a strong pipeline of new construction including Williams Ranch, served by the Castaic Union district.
| Metric | Value |
|---|---|
| Median home price | Contact for current figure |
| Median days on market | Contact for current figure |
| County | Los Angeles |
| ZIP codes | 91384 |
| Tax authority | Los Angeles County Assessor |
Where it sits and overview
Castaic is an unincorporated community of Los Angeles County (not part of the incorporated City of Santa Clarita) at the northern end of the SCV along I-5, adjacent to Castaic Lake and its recreation area.
As unincorporated LA County, Castaic services come through the county, and taxes and records are administered by the LA County Assessor and LA County Treasurer and Tax Collector.
Home types and price context
Castaic offers a mix of established single-family tracts and a strong pipeline of new construction, including the Williams Ranch master plan. Lake-adjacent and hillside settings give it a distinct character at the valley's north edge.
New construction in Castaic typically carries Mello-Roos. Compare current comparables on our property search.
Sub-neighborhoods and tracts
Castaic includes several areas and new developments:
- Williams Ranch (Castaic) — a newer master-planned community of new construction.
- Established central Castaic tracts near Castaic Lake and the town center.
- Val Verde and Hasley Canyon areas on Castaic's western side.
- Stevenson Ranch and Valencia — communities to the south buyers compare.
Schools
Castaic is served by the Castaic Union School District at the elementary level, with high schoolers attending the William S. Hart Union High School District:
- Castaic Union School District (K-8 for much of Castaic)
- William S. Hart Union High School District (high school)
Attendance areas are assigned by address, not community name. Verify any specific home in our Santa Clarita schools and home zones guide.
Mello-Roos and HOA
New Castaic developments such as Williams Ranch commonly carry Mello-Roos (CFD) special taxes funding schools, roads and infrastructure, while older established tracts may carry little or none. SCV Mello-Roos special taxes run materially higher than Ventura County and vary by tract; confirm the exact special-tax amount for the specific parcel.
New-construction communities frequently include HOA dues; budget those alongside any special tax.
For how SCV CFDs work and how to read a tax bill, see our Mello-Roos by tract guide.
Commute to the LA Basin
Castaic sits directly on I-5 at the north end of the valley, giving straightforward freeway access southbound toward the LA Basin — though it is the farthest of the core SCV communities from the Newhall Pass. Off-peak drives to the San Fernando Valley run somewhat longer than from Valencia or Newhall.
Castaic does not have its own Metrolink station; the Santa Clarita station to the south serves the area.
Our relocation guide maps the I-5 / SR-14 corridor in detail.
Buyer and seller considerations
For buyers
Before writing an offer in Castaic, request the preliminary title report and the property tax bill so you can see any Mello-Roos (CFD) special tax and HOA dues separately from the base 1% ad valorem rate. SCV special taxes run materially higher than Ventura County and vary by tract, so two similar-looking homes can carry very different monthly costs.
- Get pre-approved with payment scenarios that include the special tax and HOA, not just principal, interest, base tax and insurance.
- Confirm the school attendance area for the exact address — boundaries are set by the district, not by city or community name.
- Ask about wildfire hazard zone status and shop insurance early; some SCV hillside parcels sit in a Very High Fire Hazard Severity Zone.
For sellers
Pricing in Castaic rewards accurate, current comparables and clean disclosure. Buyers in this market are payment-sensitive at today's rates (roughly 6.5–7.0% as of 2026, verify), so presenting transparent carrying costs up front reduces fall-out risk.
See our seller guide and buyer guide for the full process, and our first-time buyer guide if this is your first purchase.
Who it fits
Castaic fits buyers who want newer construction, lake-adjacent recreation, and north-valley value, and who are comfortable budgeting Mello-Roos and HOA dues in new-build communities.
Buyers focused on the newest homes look closely at Williams Ranch (Castaic); those wanting shorter commutes may prefer communities closer to the Newhall Pass.
Service area and how we help
The Brian Cooper Real Estate Team serves the Santa Clarita Valley from our Simi Valley headquarters; we do not maintain a Santa Clarita office. Reach us through our contact page or by phone at (805) 723-2498.
We also work the neighboring Simi Valley market and can compare it candidly with SCV if you are weighing both. If you are relocating, start with our Santa Clarita relocation guide.
A closer look at Castaic neighborhoods and tracts
Castaic sits at the northern end of the Santa Clarita Valley and, unlike Saugus, Newhall or Canyon Country, it is an unincorporated community in Los Angeles County rather than part of the City of Santa Clarita. That distinction shapes its services and governance, and its neighborhoods range from newer master-planned hillside tracts to older rural pockets and a separate community near Val Verde. Knowing the sub-areas helps you target the right kind of home.
Williams Ranch and the newer hillside master plans
Williams Ranch is among the newest master-planned developments in Castaic, bringing recent construction, current open-concept floor plans, planned amenities and the cohesive feel of a modern community. As a newer master plan, it is the kind of tract most likely to carry Mello-Roos special taxes and, in some cases, HOA dues, which is the trade-off for new homes and planned infrastructure. Buyers drawn here are usually trading higher carrying costs for newer systems and contemporary design.
Hasley Canyon and Live Oak
The Hasley Canyon and Live Oak areas, on the western side of Castaic, blend established neighborhoods with newer construction across rolling terrain. Lot sizes and home ages vary, and the feel is more spread out and semi-rural than a dense tract. These areas appeal to buyers who want a quieter, more open setting while staying close to the I-5 corridor.
North Lake and the area near Castaic Lake
North Lake and the neighborhoods near Castaic Lake put recreation at the doorstep, with newer planned development in some pockets and proximity to the water and surrounding open space. The lake is a defining amenity for this part of Castaic, drawing buyers who prioritize outdoor recreation.
Val Verde
Val Verde, to the southwest, is an older, more rural and historically distinct community with larger lots, a mix of housing types and a notably different character from the newer Castaic master plans. Some Val Verde and rural-edge properties may rely on private well or septic systems and sit in higher wildfire-hazard terrain, so diligence here looks different from a standard tract purchase.
Because Castaic spans new master plans, semi-rural neighborhoods and the distinct community of Val Verde, touring across these areas before deciding is worthwhile. Our Santa Clarita master-plan and tract guide explains how SCV developments are organized, and the live property search lets you filter to the specific part of Castaic you want.
Schools serving Castaic in depth
Castaic is served at the elementary level by the Castaic Union School District, with junior high and high school students attending the William S. Hart Union High School District (Hart UHSD), the valley-wide secondary district. This local-elementary-plus-shared-secondary structure mirrors the rest of the Santa Clarita Valley, even though Castaic itself is unincorporated.
As everywhere in the valley, attendance is assigned by the home's exact address rather than by community name, and Castaic's spread-out, varied geography means homes in different pockets can feed different schools. Districts periodically adjust boundaries as enrollment changes, so a current published map is the only reliable reference.
- Castaic Union School District — elementary grades for most of Castaic.
- William S. Hart Union High School District — junior high and high school across the valley.
If a specific school is a deciding factor, confirm the exact attendance zone for any address directly with the district before writing an offer, since the published boundary map is the only authoritative source. Our Santa Clarita schools and home zones guide explains how to verify a boundary.
Getting around: commute and access from Castaic
Castaic's position at the north end of the valley puts it right on the Interstate 5 corridor, which is both an advantage and a consideration. For trips south toward the San Fernando Valley and greater Los Angeles, I-5 access is direct, and many Castaic residents reach the freeway quickly. The trade-off is distance: Castaic is farther north than most SCV communities, so the southbound commute is longer than from Newhall or Valencia, and the I-5 grade over the area can be slow at peak times.
Castaic is more car-oriented than the communities served by Metrolink stations to the south; transit riders typically drive to a station such as the Santa Clarita or Via Princessa stop on the Antelope Valley Line. Canyon and rural roads serving Hasley Canyon, Val Verde and the lake areas are slower and more winding. As always, verify your own route at the hour you would actually commute rather than relying on a general estimate. Our Santa Clarita relocation guide maps the I-5 and SR-14 corridor in more detail.
Understanding Mello-Roos and HOA costs in Castaic
Castaic's mix of newer master plans and older rural neighborhoods produces a wide range of carrying costs. Newer developments such as Williams Ranch commonly carry a Community Facilities District (CFD) special tax on top of the base ad valorem rate of roughly 1% of assessed value, funding the infrastructure and services that supported the development. Older rural areas and parts of Val Verde frequently carry little or no special tax.
SCV special taxes run materially higher than what buyers see in Ventura County and vary substantially tract to tract, so two Castaic homes at similar list prices can carry very different monthly payments depending on which development they sit in. Some planned tracts also charge HOA dues. The only reliable way to know a home's true cost is to confirm the exact special-tax amount for the specific parcel by reading the actual property-tax bill and preliminary title report. The tax authority of record is the Los Angeles County Assessor. Our Mello-Roos by tract guide shows how to read a Santa Clarita tax bill line by line.
What buyers should know before making an offer in Castaic
Castaic offers a varied inventory: newer master-planned homes with modern finishes, semi-rural properties in Hasley Canyon and Live Oak, recreation-oriented homes near Castaic Lake, and older rural parcels in Val Verde and the community's edges. Matching the segment to your priorities matters, because diligence and budgeting differ across them, and because Castaic's unincorporated status means services and some processes differ from the incorporated city to the south.
- Get pre-approved with payment scenarios that include any Mello-Roos special tax and HOA dues where they apply — newer master plans like Williams Ranch add meaningfully, older rural areas often do not.
- Check wildfire hazard status carefully: Castaic's hillside, canyon and rural parcels can sit in a Very High Fire Hazard Severity Zone (VHFHSZ), which affects insurance availability and cost. Shop insurance before removing contingencies.
- On rural parcels in Val Verde, Hasley Canyon and the edges, confirm whether the home is on a private well or septic system rather than municipal service, as that changes inspection and maintenance expectations.
- Request the preliminary title report and property-tax bill early and read the special-tax line separately from the base 1% rate.
Mortgage rates as of 2026 sit roughly in the 6.5 to 7.0% range — verify the current figure. Our buyer guide, first-time buyer guide and Santa Clarita wildfire insurance guide cover these steps in detail.
What sellers should know in Castaic
Pricing a Castaic home well starts with comparables drawn from the same kind of property — a newer Williams Ranch tract home, a semi-rural Hasley Canyon property and an older Val Verde parcel are not interchangeable comps. Because buyers are payment-sensitive, the listings that move cleanly disclose the real special-tax amount, any HOA dues and, for rural and hillside homes, a realistic insurance outlook up front, which heads off the surprises that cause escrows to fall apart.
Preparation should fit the property: rural sellers benefit from clearly presenting usable land, water and outbuildings, while tract sellers compete on condition, staging and photography. Recreation-oriented homes near the lake can lean into that amenity. Timing favors spring and early summer in family segments, though a correctly priced home sells in any season. Our seller guide walks through prep, pricing and timing, and you can request current comparables through our contact page.
Who Castaic tends to fit
Castaic tends to fit buyers who want newer master-planned homes or more space and a semi-rural feel at the northern edge of the valley, and who are comfortable with a somewhat longer southbound commute in exchange for value, recreation or land. Outdoor-oriented households are drawn to the proximity of Castaic Lake and the surrounding open space; buyers wanting modern construction look to Williams Ranch and the newer hillside tracts; and those after rural character or larger lots consider Val Verde and Hasley Canyon. Compared with Valencia, which runs around $925,000 as of 2026 (verify), Castaic often offers more home or land for the money, with the trade-off of distance and unincorporated services.
Local lifestyle in Castaic
Recreation defines daily life in much of Castaic, thanks largely to Castaic Lake and the surrounding open space, which support boating, fishing, hiking and other outdoor pursuits close to home. The community's more rural and semi-rural pockets reinforce that outdoor, open feel, while the newer master plans offer the parks and amenities buyers expect from contemporary developments. The overall pace is quieter and more spread out than the valley's denser communities.
Because Castaic is unincorporated Los Angeles County rather than part of the City of Santa Clarita, some parks and services are county-administered, but residents still sit within the broader Santa Clarita Valley and its recreation and trail network. For a fuller picture of valley living, our Santa Clarita overview covers the wider community, and the relocation guide is a good starting point if you are moving in from outside the area.
Frequently Asked Questions
Is Castaic part of the City of Santa Clarita?
No. Castaic is an unincorporated community of Los Angeles County at the north end of the Santa Clarita Valley, not part of the incorporated city.
What is Williams Ranch?
Williams Ranch is a newer master-planned community of new construction in Castaic. New homes there typically carry Mello-Roos. See our Williams Ranch guide.
What school district serves Castaic?
Castaic is served by the Castaic Union School District at the elementary level, with the William S. Hart Union High School District for high school. Verify by address.
Does Castaic have Mello-Roos?
New developments like Williams Ranch commonly carry Mello-Roos (CFD) special taxes; older tracts may carry little or none. SCV special taxes run materially higher than Ventura County and vary by tract — confirm per parcel.
Is Castaic near a lake?
Yes. Castaic is adjacent to Castaic Lake and its state recreation area at the north end of the SCV.
How is the commute from Castaic to LA?
Castaic sits on I-5 but is the farthest core SCV community from the Newhall Pass, so off-peak LA Basin drives run somewhat longer than from Valencia or Newhall.
Is Castaic a good place for new construction?
Castaic has a strong new-construction pipeline, notably Williams Ranch. Weigh modern features against Mello-Roos and HOA costs.
Does the Brian Cooper team have a Santa Clarita office?
No. The Brian Cooper Real Estate Team serves the Santa Clarita Valley from our Simi Valley headquarters; we do not maintain a Santa Clarita office.
