399 Marion Avenue, Mill Valley, CA 94941, Mill Valley, 94941 - 3 bed, 3 bath

399 Marion Avenue
Mill Valley, CA 94941
Property Price
SUMMARY
Analysis of 399 Marion Avenue, Mill Valley, CA 94941 reveals a property with a current list price of $2,625,000, which is 9% above the estimated $2,393,592 Fair Market Value. Buyers should carefully evaluate the pricing and consider negotiation opportunities. The property maintains a Excellent Condition Rating (95/100), indicating excellent structural integrity and modern finishes throughout. This turnkey property requires minimal updates and is ready for immediate occupancy. Located in a high-demand neighborhood within the Mill Valley Unified School District, this asset is categorized as a low-risk, high-reward acquisition suitable for both Buy-and-Hold Investors and Owner-Occupants willing to undertake light renovation work.
Estimated Market Value
Comparable Sales Map
Comparables within 1 miles sold in recently
| Address | Sold Price | Beds | Baths | Sq Ft | $/Sqft | Distance |
|---|---|---|---|---|---|---|
★ 399 Marion Avenue Subject | $2,625,000* List Price | 3 | 3 | 2,080 | $1,151 | - |
A 351 Laverne Avenue Sold | $2,475,000 | 3 | 3 | 2,265 | $1,093 | 0.5 mi |
B 311 Edgewood Avenue Sold | $2,100,000 | 3 | 2 | 1,800 | $1,167 | 0.1 mi |
C 20 Palm Way Sold | $2,582,000 | 4 | 3 | 2,871 | $899 | 0.5 mi |
D 269 Corte Madera Avenue Sold | $2,100,000 | 4 | 4 | 2,200 | $955 | 0.8 mi |
E 316 Rydal Avenue Pending | $2,395,000 List Price | 4 | 3 | 2,321 | $1,032 | 0.8 mi |
* Subject property listed price vs sold prices of comps.
Condition Analysis
OVERALL CONDITION SCORE
Property is new construction or fully renovated.
Although originally built in 1958, the property has undergone extensive high-end renovations that meet modern luxury standards. Key features include a newly renovated spa-style primary bathroom with heated floors and teak detailing, a chef's kitchen with premium stainless steel appliances and granite countertops, and contemporary architectural elements like floor-to-ceiling frameless windows and an open-concept layout. The home is in move-in condition with no signs of deferred maintenance.
PROSSTRENGTHS & OPPORTUNITIES
- High Available Lot Utilization
The property has a large lot size, which is more than 4 times of its living area. lot size in square feet = 11286, living area = 2080.
- Great Schools
Elementary School: Tamalpais Valley Elementary School (9/10). Middle School: Mill Valley Middle School (9/10).
- ADU Development Potential
The property includes two parcels on a street-to-street lot, offering a significant value-add opportunity to construct an ADU with its own separate access from Florence Street.
CONSRISKS & DEFICIENCIES
- Wooded Lot Maintenance
The property's setting among towering redwoods and terraced gardens requires consistent maintenance to manage debris and moisture levels inherent to this microclimate.
- Multi-Level Layout
Built in 1958, the home’s configuration places bedrooms on a lower level, which may not appeal to buyers looking for single-level living or a more traditional floor plan.
About 399 Marion Avenue
Set among towering redwoods on a quiet Mill Valley street, this one-of-a-kind home offers something rare: the feeling of living in a private forest retreat while staying moments from town, schools, parks, and daily conveniences. Thoughtfully designed with Zen-inspired outdoor spaces, two expansive decks, and treetop views from nearly every room, the home invites a slower, more connected way of living- morning coffee in the trees, family dinners under the canopy, and weekends filled with fresh air and adventure. A welcoming front deck leads into the main living level, where the living, dining, and kitchen spaces flow in an open-concept layout filled with natural light from oversized windows and skylights. The chef's kitchen features granite countertops, custom wood cabinetry, premium stainless appliances, and a generous island for gathering, homework, and casual meals. Rear deck access makes indoor-outdoor entertaining effortless. Downstairs, the private primary suite feels like a true sanctuary, opening to its own secluded deck. The newly renovated spa-style bath includes a deep porcelain soaking tub, heated shower floors, multiple shower heads, custom teak detailing, and a gray water diverter system that can nourish the surrounding redwoods. An additional bedrooms and a full bath complete this level, including a spacious and flexible third bedroom with a built-in office area, custom Murphy bed, generous storage, and floor-to-ceiling frameless windows and doors overlooking the terraced garden. A significant value-add: this property includes two parcels on a street-to-street lot (one APN), creating potential for an ADU with separate Florence Street accessideal for guests, extended family, an au pair suite, home office, or future income opportunity. With direct proximity to the iconic Dipsea Trail stairs, nearby parks, top-rated schools, and vibrant downtown Mill Valley, this home delivers an exceptional blend of privacy, elegance, and everyday livability for families who want both nature and community.
Property Details
Public Facts
- Property Type
- Single Family Residence
- Year Built
- 1958
- Lot Size
- 11,286 Sq. Ft.
Interior
- Total Bedrooms
- 3
- Total Bathrooms
- 3 (3 Full, 0 Half)
Exterior & Parking
No exterior & parking available.
Utilities & Misc
- HOA Fee
- $0 / Month
Neighborhood Insights
Mill Valley Unified Schools
Old Mill Elementary School
Grades K-5 • 0.3 mi
Park Elementary School
Grades PK-5 • 1.1 mi
Edna Maguire Elementary School
Grades K-5 • 1.6 mi
Sensitive Facilities
No sensitive facilities data found.
Neighborhood Comparison
| Feature | Subject | Average Home | Neighborhood Ranking (50 Listings) |
|---|---|---|---|
| Beds | 3.0 | 4.0 | 49% |
| Baths | 3.0 | 3.0 | 50% |
| Square foot | 2,080 | 2,190 | 46% |
| Lot Size | 11,286 | 8,359 | 72% |
| Price | $2.62M | $2.10M | 70% |
| Price per sq ft | $1.3K | $1.0K | 76% |
| Built year | 1958 | 1959 | 50% |
| HOA | $0 | $0 | 50% |
| Days on market | 19 | 172 | 1% |
Pricing History
Listed for Sale
Feb 16, 2026
$2,625,000
Initial Listing
Sold
Jul 15, 2011
$999,000
Public Record
Sold
Nov 18, 2005
$1,100,000
Public Record
Sold
Aug 1, 2003
$875,000
Public Record
Sold
Aug 28, 1998
$651,000
Public Record


































