26 Circle Ave Mill Valley, CA 94941
Blithedale Canyon NeighborhoodEstimated payment $9,669/month
Highlights
- Hot Property
- Living Room with Fireplace
- Landscaped
- Mill Valley Middle School Rated A
- 1 Car Detached Garage
- Central Heating
About This Home
Welcome to 26 Circle Avenue, one of Mill Valley's most recognized and beloved homes. Long known among locals as the castle house, this remarkable property occupies a rare street to street lot stretching from Circle Avenue to Oakdale, right where Buena Vista meets Oakdale in one of the town's most desirable pockets. This legal duplex offers exceptional flexibility, with 5 bedrooms and 3 bathrooms spread across more than 3,100 square feet of living space. Whether used as a multi-generational residence, an income-producing investment, or a spacious owner-occupied retreat, the layout provides options that are increasingly hard to find in Mill Valley's tightly held market. Cared for by the same family for decades, the home carries a warmth and character that only comes with time. Its distinctive architecture and enduring presence have made it a true neighborhood landmark, and it now presents a rare opportunity for a new owner to bring their own vision to a property with unmatched history. Just blocks from Downtown Mill Valley, Boyle Park, Mill Valley Golf Course and hiking trails, 26 Circle Avenue places shops, restaurants, and open space all within easy reach. Few properties offer this combination of privacy, walkability, and access to everything that makes Mill Valley special. 26 CircleAvenue is more than a home. It is a piece of Mill Valley's fabric, ready for its next chapter.
Open House Schedule
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Saturday, August 22, 20261:00 to 4:00 pm8/22/2026 1:00:00 PM +00:008/22/2026 4:00:00 PM +00:00Add to Calendar
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Sunday, August 23, 20261:00 to 4:00 pm8/23/2026 1:00:00 PM +00:008/23/2026 4:00:00 PM +00:00Add to Calendar
Home Details
Home Type
- Single Family
Year Built
- Built in 1916
Lot Details
- 4,940 Sq Ft Lot
- Landscaped
Parking
- 1 Car Detached Garage
- Front Facing Garage
Interior Spaces
- 3,163 Sq Ft Home
- 3-Story Property
- Living Room with Fireplace
- 2 Fireplaces
- Partial Basement
- Free-Standing Gas Range
Bedrooms and Bathrooms
- 5 Bedrooms
- 3 Full Bathrooms
Laundry
- Dryer
- Washer
Utilities
- No Cooling
- Central Heating
- Wall Furnace
Map
Home Values in the Area
Average Home Value in this Area
Tax History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Year | Tax Paid | Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. | Land | Improvement |
|---|---|---|---|---|
| 2026 | $4,121 | $121,283 | $45,012 | $76,271 |
| 2025 | $4,121 | $118,905 | $44,130 | $74,775 |
| 2024 | $4,546 | $116,573 | $43,264 | $73,309 |
| 2023 | $3,804 | $114,288 | $42,416 | $71,872 |
| 2022 | $3,213 | $112,048 | $41,585 | $70,463 |
| 2021 | $3,272 | $109,851 | $40,769 | $69,082 |
| 2020 | $3,277 | $108,684 | $40,331 | $68,353 |
| 2019 | $2,322 | $106,553 | $39,540 | $67,013 |
| 2018 | $2,374 | $104,464 | $38,765 | $65,699 |
| 2017 | $2,507 | $102,416 | $38,005 | $64,411 |
| 2016 | $2,415 | $100,408 | $37,260 | $63,148 |
| 2015 | $2,231 | $98,900 | $36,700 | $62,200 |
| 2014 | $2,091 | $96,963 | $35,981 | $60,982 |
Property History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Event | Price | List to Sale | Price per Sq Ft |
|---|---|---|---|---|
| 08/18/2026 08/18/26 | For Sale | $1,700,000 | -- | $537 / Sq Ft |
Purchase History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Type | Sale Price | Title Company |
|---|---|---|---|
| Interfamily Deed Transfer | -- | Amrock | |
| Interfamily Deed Transfer | -- | Amrock | |
| Quit Claim Deed | -- | None Available | |
| Quit Claim Deed | -- | None Available | |
| Interfamily Deed Transfer | -- | None Available | |
| Interfamily Deed Transfer | -- | None Available | |
| Interfamily Deed Transfer | -- | None Available | |
| Interfamily Deed Transfer | -- | -- | |
| Interfamily Deed Transfer | -- | -- | |
| Interfamily Deed Transfer | -- | -- | |
| Interfamily Deed Transfer | -- | Fidelity National Title | |
| Interfamily Deed Transfer | -- | -- |
Mortgage History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Status | Loan Amount | Loan Type |
|---|---|---|---|
| Previous Owner | $486,150 | New Conventional | |
| Previous Owner | $532,350 | New Conventional | |
| Previous Owner | $533,850 | New Conventional | |
| Previous Owner | $604,000 | New Conventional |
Source: Bay Area Real Estate Information Services (BAREIS)
MLS Number: 326070325
APN: 029-125-23
Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.
Listing information deemed reliable but not guaranteed. Copyright 2026 Bay Area Real Estate Information Services, Inc. All Right Reserved.
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