20 Walnut Ave
Mill Valley, CA 94941
Sycamore/Tamalpais Park- 4 Beds
- 4 Baths
- 2,500 sqft
4 Beds
4 Baths
2,500 sqft
Local Information
-- mins to
Description
Charming renovated Craftsman style 3 bdrm, 3 bath home with detached 1 bedroom guest house on large level lot in the heart of Sycamore Park. The main level open floor plan features a chef's kitchen & spacious great room that spills out to the covered loggia w/ outdoor fireplace, b-b-q & level lawn. Private main level master suite w/ 2 bdrms & bath on 2nd level. Detached guest house w/ projection screen tv & home gym. Gorgeous level lawn w/ in ground hot tub & putting green.
This property is off market, which means it's not currently listed for sale or rent on Trulia. This may be different from what's available on other websites or public sources.
Home Highlights
Parking
Garage
Outdoor
No Info
A/C
Heating only
HOA
None
Price/Sqft
No Info
Listed
Less than a day ago
Home Details for 20 Walnut Ave
|
|---|
Heating & Cooling Heating: Wall, OtherHeating Fuel: Wall |
Interior Details Types of Rooms: Dining Room |
Fireplace & Spa Fireplace |
|
|---|
Year Built Year Built: 1909Year Updated: 1974 |
Property Type / Style Property Type: Single Family HomeArchitecture: Contemporary |
|
|---|
Exterior Home Features Exterior: Shingle Not Wood |
Parking & Garage GarageParking: Garage Attached |
|
|---|
Units in Building: 2 |
|
|---|
Lot Area: 10500 sqft |
Price History for 20 Walnut Ave
| Date | Price | Event | Source |
|---|---|---|---|
| 10/24/2023 | $4,100,000 | Sold | N/A |
| 05/27/2020 | $12,000 | ListingRemoved | Agent Provided |
| 05/14/2020 | $12,000 | Listed For Rent | Agent Provided |
| 10/14/2019 | $11,000 | ListingRemoved | Agent Provided |
| 10/11/2019 | $11,000 | Listed For Rent | Agent Provided |
| 07/27/2019 | $11,000 | ListingRemoved | Agent Provided |
| 07/03/2019 | $11,000 | PriceChange | Agent Provided |
| 04/18/2019 | $12,500 | Listed For Rent | Agent Provided |
| 08/29/2009 | $2,695,000 | ListingRemoved | Agent Provided |
| 08/07/2009 | $2,695,000 | Listed For Sale | Agent Provided |
| 04/15/2004 | $890,000 | Sold | N/A |
| 08/21/1998 | $1,364,000 | Sold | N/A |
Market trends in Mill Valley
Last updated May 2026
Avg. sale price
$2.11M
$75KMoM
Sale-to-List Price
105.3%
4.1%MoM
Price per sq ft
$1.01K
$33MoM
Available listings
79
3MoM
Property Tax and Assessment
| Year | 2025 |
|---|---|
| Tax | $51,680 |
| Assessment | $4,242,000 |
Home facts updated by county records
Comparable Sales for 20 Walnut Ave
Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
|---|---|---|---|---|---|---|---|
0.06 | Single-Family Home | $2,900,000 | 07/11/25 | 4 | 3 | 2,565 | |
0.03 | Single-Family Home | $3,600,000 | 05/20/26 | 4 | 2 | 1,992 | |
0.08 | Single-Family Home | $6,300,000 | 08/15/25 | 4 | 4.5 | 3,206 | |
0.03 | Single-Family Home | $5,625,000 | 02/13/26 | 4 | 4 | 3,716 | |
0.10 | Single-Family Home | $3,800,000 | 03/13/26 | 3 | 3 | 2,635 | |
0.22 | Single-Family Home | $3,855,000 | 04/28/26 | 4 | 3 | 2,574 | |
0.35 | Single-Family Home | $3,000,000 | 03/05/26 | 4 | 3.5 | 2,210 | |
0.16 | Single-Family Home | $2,850,000 | 09/22/25 | 4 | 3 | 2,621 | |
0.27 | Single-Family Home | $2,200,000 | 06/10/26 | 4 | 3.5 | 2,234 | |
0.28 | Single-Family Home | $4,450,000 | 04/23/26 | 4 | 4 | 2,847 |
Nearby homes
Get a sense of prices in the area by checking nearby homes.Assigned Schools
These are the assigned schools for 20 Walnut Ave.
What Locals Say about Sycamore/Tamalpais Park
At least 15 Trulia users voted on each feature.
100 % Say parking is easy
100 % Say it's dog friendly
96 % Say it's walkable to restaurants
95 % Say there's wildlife
95 % Say it's walkable to grocery stores
94 % Say there are sidewalks
88 % Say people would walk alone at night
87 % Say kids play outside
85 % Say car is needed
78 % Say there's holiday spirit
74 % Say yards are well-kept
71 % Say they plan to stay for at least 5 years
71 % Say neighbors are friendly
58 % Say it's quiet
48 % Say there are community events
39 % Say streets are well-lit
Sourced by Trulia users. Learn more about our methodology.
LGBTQ Local Legal Protections
LGBTQ Local Legal Protections
Apartments for Rent
Homes for sale near 20 Walnut Ave
Off Market Homes Near 20 Walnut Ave
20 Walnut Ave, Mill Valley, CA 94941 is a 4 bedroom, 4 bathroom, 2,500 sqft single-family home built in 1909. 20 Walnut Ave is located in Sycamore/Tamalpais Park, Mill Valley. This property is not currently available for sale. 20 Walnut Ave was last sold on Oct 24, 2023 for $4,100,000. The current Trulia Estimate for 20 Walnut Ave is $4,878,700.

