175 Tamalpais Rd

Fairfax 94930 · APN 001-053-19 · Fairfax

Property brief (PDF)Timeline ↓Calculator ↓Official records ↓

We don't have building permits for Fairfax, so permit history and nearby activity are incomplete here. Building permits cover unincorporated Marin only; Marin's 11 cities don't publish theirs. New housing in every city comes from the state's Housing Element reports. Parcel, assessor, and record links still apply.

What's changing nearby

Since — within ½ mile: 3 homes completed, 6 permitted.

9 projects with a record in this window, grouped by us from permits and State housing reports. Units are as proposed on each project's latest record and counted at its current stage.

No permit activity recorded within ½ mile.

Explore projects on the map →Explore sales & prices →

Estimated price, listing status & sales records

Benchmark valuation & transaction history

Estimated PriceArea benchmark

$1,270,000

Benchmark range: $1,080,000 – $1,461,000

Listing StatusOff Market

Not currently listed for sale

Compare nearby sales & prices on map →

Last Sold & Tax Roll

No deed price in open GIS feed

Verify on Assessor's property search

How this estimated price is calculated (Area ZHVI + ACS + Permit Benchmark)

Model monthly ownership cost ↓

1. Area home value baseline: ZIP 94930 Zillow Home Value Index ($1,233,096, September 2026); $1,233,096
2. Parcel & lot adjustment (1.03×): Single-family lot (8,756 sq ft, +3.0% lot-size adjustment vs 6,000 sq ft standard lot); +$37,287
3. Documented permitted improvements: No recent value-adding ADU, addition, or remodel permits recorded on this parcel; +$0

Public-records benchmark estimate combining Zillow Home Value Index (Data provided by Zillow), Census ACS 5-year estimates, parcel land-use/lot characteristics, and issued building permits. Not an official appraisal.

What could be built here

A screen, not a determination

ADU or junior ADU

Likely eligible

Zoned RS-6 (single-family residential): state law allows ADUs where homes are allowed.
We read RS-6 from the zoning code's name; we haven't checked it against Fairfax's code text.

What we couldn't check (4)

Setbacks, height and size limits in the local ADU ordinance
Utility and sewer capacity, fire access
Historic district or landmark status: we have no historic layer for this area yet.
Locally adopted fire hazard maps, which can be broader than the State's.

SB 9: two homes on the lot

Likely eligible

Zoned RS-6, a single-family residential zone.
We read RS-6 from the zoning code's name; we haven't checked it against Fairfax's code text.

What we couldn't check (6)

Whether a tenant lived there in the last 3 years, or the building was withdrawn from rent under the Ellis Act
Rent-controlled or deed-restricted affordable housing on the lot
Wetlands, habitat, farmland, hazardous waste sites and conservation easements
Local SB 9 standards (size, setbacks, parking)
Historic district or landmark status: we have no historic layer for this area yet.
Locally adopted fire hazard maps, which can be broader than the State's.

SB 9: split into two lots

Likely eligible

Zoned RS-6, a single-family residential zone.
We read RS-6 from the zoning code's name; we haven't checked it against Fairfax's code text.
The lot is 8,756 sq ft by the assessor, room for two lots of at least 1,200 sq ft, each at least 40% of the original.

What we couldn't check (6)

Owner-occupancy: the applicant must sign an affidavit to live in one of the homes for 3 years
Whether the lot was created by an earlier SB 9 split, or the owner split an adjacent lot
Whether a tenant lived there in the last 3 years, or the building was withdrawn from rent under the Ellis Act
Wetlands, habitat, farmland, hazardous waste sites and conservation easements
Historic district or landmark status: we have no historic layer for this area yet.
Locally adopted fire hazard maps, which can be broader than the State's.

Mapped hazards on this lot

Fire hazard severity zone: High Fire Hazard Severity Zone (Local Responsibility Area), all of the lot · State map of Mar 24, 2025; takes effect when the city or county adopts it
FEMA flood zone: Zone X: minimal flood hazardFIRM panel 06041C0451E, effective March 17, 2014. Official flood map
Earthquake fault zone: Not in an Alquist-Priolo Earthquake Fault Zone

Built nearby: within ¼ mile since October 2023

We don't have building permits for Fairfax, so we can't show what has been permitted nearby.

Permit counts, by the date issued (or applied, if not yet issued). Lot splits are planning cases, which we don't have.

We read public zoning and hazard maps against state law (ADUs: Gov. Code 66314; SB 9: Gov. Code 65852.21 and 66411.7). Local rules, title, tenancy history and site conditions can change the answer. Check with Fairfax's planning department before relying on it.

Sources: County of Marin GIS (MarinMap), Zoning (11 cities and unincorporated Marin) (retrieved Oct 31, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the State Responsibility Area (effective 2024-04-01) (retrieved Oct 26, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the Local Responsibility Area (map dated 2025-03-24) (retrieved Oct 26, 2026) · FEMA, National Flood Hazard Layer — flood hazard zones (retrieved Oct 26, 2026) · FEMA, National Flood Hazard Layer — FIRM panels (retrieved Oct 26, 2026) · California Geological Survey, Alquist-Priolo Earthquake Fault Zones (retrieved Oct 26, 2026) · Zoning classes: our classification of RS-6 as single-family residential, from the code's name only

Property & area intelligence timeline

66 events · 19 slow/stalled projects

Chronological history of building permit applications and issuances, snapshot-dated status changes, State housing entitlements, surrounding development within ½ mile, and area home-value trends.

Slow-moving or stalled projects (19)

Active projects spending 12+ months pre-issuance, 24+ months under construction, or 6+ months without new records

StalledNew homeIssued
350 ft SE
Permit issued and active for 8.6 yr (first record Mar 21, 2018), with no completion or new permit record in 8.6 yr. · 1 unit
Stalled2 new homesIssued
0.45 mi E
Permit issued and active for 8.6 yr (first record Mar 26, 2018), with no completion or new permit record in 8.6 yr. · 2 units
Stalled2 new homesIssued
0.28 mi NE
Permit issued and active for 8.4 yr (first record Jun 20, 2018), with no completion or new permit record in 8.4 yr. · 2 units
StalledNew homeIssued
0.2 mi NE
Permit issued and active for 8.3 yr (first record Jul 27, 2018), with no completion or new permit record in 8.3 yr. · 1 unit
StalledNew homeIssued
0.37 mi NE
Permit issued and active for 8.2 yr (first record Aug 17, 2018), with no completion or new permit record in 8.2 yr. · 1 unit
StalledNew homeIssued
0.12 mi SW
Permit issued and active for 8.2 yr (first record Aug 24, 2018), with no completion or new permit record in 8.2 yr. · 1 unit

20261 event

September 2026Market trend
ZIP 94930
ZIP 94930 typical home value: $1,233,096 (+5.4% year-over-year)
Latest published Zillow Home Value Index (ZHVI) update
Changed from $1,169,780 in September 2025 to $1,233,096 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94930 (not a parcel appraisal)

202510 events

September 2025Market trend
ZIP 94930
ZIP 94930 typical home value: $1,169,780 (−3.8% year-over-year)
Annual ZIP 94930 home-value index checkpoint
Changed from $1,215,573 in September 2024 to $1,169,780 in September 2025.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94930 (not a parcel appraisal)
Jul 18, 2025Nearby project · Issued
0.39 mi SE
New home — Issued
1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Jun 12, 2025Housing completed
On this parcel
1 housing unit completed (001-053-19)
Reported in 2025 Housing Element Annual Progress Report
ADU · Renter
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: parcel
May 5, 2025Nearby project · Finaled / completed
0.41 mi N
New home — Finaled / completed
1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Apr 29, 2025Nearby project · Finaled / completed
0.28 mi SE
New home — Finaled / completed
1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Apr 26, 2025Nearby project · Issued
0.19 mi W
New home — Issued
1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Apr 26, 2025Nearby project · Issued
470 ft E
New home — Issued
1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Apr 26, 2025Nearby project · Issued
0.39 mi SE
New home — Issued
1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Apr 26, 2025Nearby project · Issued
0.33 mi SE
New home — Issued
1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Jan 7, 2025Nearby project · Issued
0.41 mi E
New home — Issued
1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)

20242 events

September 2024Market trend
ZIP 94930
ZIP 94930 typical home value: $1,215,573 (+0.1% year-over-year)
Annual ZIP 94930 home-value index checkpoint
Changed from $1,214,660 in September 2023 to $1,215,573 in September 2024.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94930 (not a parcel appraisal)
Jan 1, 2024Nearby project · Finaled / completed
0.17 mi SW
New home — Finaled / completed
1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)

20232 events

Oct 15, 2023Nearby project · Finaled / completed
0.15 mi E
New home — Finaled / completed
1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
September 2023Market trend
ZIP 94930
ZIP 94930 typical home value: $1,214,660 (−5.0% year-over-year)
Annual ZIP 94930 home-value index checkpoint
Changed from $1,278,920 in September 2022 to $1,214,660 in September 2023.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94930 (not a parcel appraisal)

Showing 15 of 66 timeline events

Recorded sales & deed transfers: California county recorders do not publish open bulk deed-transfer feeds without owner-PII restrictions, so individual sale deeds are not redistributed here. For official assessment roll and recorded transfer history in Fairfax, inspect Assessor's property search ↗.

Development graph & closer investigation

6 investigation leads

Cross-referenced intelligence from our historical development graph—connecting parcels, permits, entity-resolved builders, empirical review-time distributions, and neighborhood renovation trends.

Explore full Fairfax development graph →

Developments deserving closer investigation (6)

On this parcel & within ½ mile

School Street Live/Work UnitsIssuedNo new record in 6.5 yr12 units
0.25 mi E
Active in "Issued" for 6.5 yr (first record Apr 18, 2020) with no new permit activity recorded in 6.5 yr. High-impact scale (12 housing units, 9 deed-restricted affordable across 0 permits).
New homeIssuedNo new record in 8.6 yr
350 ft SE
Active in "Issued" for 8.6 yr (first record Mar 21, 2018) with no new permit activity recorded in 8.6 yr.
New homeIssuedNo new record in 18 mo
470 ft E
Active in "Issued" for 18 mo (first record Apr 26, 2025) with no new permit activity recorded in 18 mo.
New homeIssuedNo new record in 8.2 yr
0.12 mi SW
Active in "Issued" for 8.2 yr (first record Aug 24, 2018) with no new permit activity recorded in 8.2 yr.
New homeIssuedNo new record in 6.4 yr
0.15 mi NW
Active in "Issued" for 6.4 yr (first record May 20, 2020) with no new permit activity recorded in 6.4 yr.
New homeIssuedNo new record in 18 mo
0.19 mi W
Active in "Issued" for 18 mo (first record Apr 26, 2025) with no new permit activity recorded in 18 mo.

Ownership & rental scenario calculator

Prop 13 tax estimate & area benchmarks

Area rent & home-value benchmarks (kept separate from your assumptions)

Click any benchmark to pre-fill the calculator

HUD Small Area Fair Market Rent · ZIP 94930

HUD FY 2026 · 40th-percentile gross rent

Census ACS 5-year median gross rent (all bedroom counts combined):

ZIP 94930$2,394±$236

Area home-value benchmarks (not an appraisal)

ZIP & neighborhood medians

Zillow ZHVI · ZIP 94930(as of September 2026)Data provided by Zillow · typical mid-tier home value in ZIP

$1,233,096

ACS Median Home Value · ZIP 94930Census ACS 2020–2024 owner-occupied self-reported median

$1,252,000±$81,300

1. Purchase, financing & Prop 13 tax reassessment

Purchase price ($)Down payment (%)$254,000Interest rate (%)Loan termClosing costs (%)$25,400

Prop 13 post-purchase property tax estimate

$1,255/mo ($15,055/yr · 1.19%)

Under California Proposition 13, the seller's historical assessed value does not carry over to a buyer. On sale, the parcel is reassessed at the purchase price: 1.00% base rate ($12,700/yr) + local voter-approved bond debt ($1,905/yr) + fixed direct levies/Mello-Roos ($450/yr).

Voter bond rate (%)$1,905/yrDirect levies / Mello-Roos ($/yr)Check Assessor's property search ↗

2. Your rent & operating assumptions

Monthly gross rent ($)Your assumptionVacancy allowance (%)−$163/moManagement (%)$247/moMaintenance (%)$163/moCapEx reserve (%)$163/moInsurance ($/mo)$3,300/yrHOA dues ($/mo)Owner utilities ($/mo)

Mapped hazard zone insurance context on this parcel:

Parcel intersects a mapped High Fire Hazard Severity Zone (Local Responsibility Area) (local responsibility area). Properties in High or Very High fire hazard zones may require California FAIR Plan + difference-in-conditions (DIC) coverage; verify actual insurability and quotes early.

3. Scenario results (based on your assumptions)

Net monthly cash flow: −$5,436
Cash-on-cash return: -23.3%
Cap rate (Year 1 NOI): 0.93%
DSCR (NOI / debt): 0.15x
Break-even gross rent: $10,273/mo
Break-even vacancy: 0% (negative at full occ.)

Monthly cash-flow breakdown (Effective gross $3,088 − Operating $2,102 − Debt $6,422)

Gross scheduled rent$3,250

Vacancy allowance (5%)−$163

Effective gross income$3,088

Prop 13 property tax (1.19%)−$1,255

Property insurance−$275

Management (8%), maintenance (5%) & CapEx (5%)−$572

Net Operating Income (NOI)+$986

Mortgage principal & interest (1,016,000 loan)−$6,422

Net monthly cash flow−$5,436

4. Sensitivity & rent-stabilization ceiling (Fairfax)

Scenario	Assumptions	Year 1 Rent	Year 1 Cash Flow	Cash-on-Cash	Break-Even Rent	Year 5 Cash Flow
Conservative	−8% starting rent, +3% vacancy, +3% combined maintenance/CapEx, 1.5%/yr rent growth	$2,990/mo	−$5,809/mo	-25.0%	$11,099/mo	−$5,807/mo
Base (your inputs)	Your entered assumptions, 3.0%/yr rent growth	$3,250/mo	−$5,436/mo	-23.3%	$10,273/mo	−$5,249/mo
Optimistic (cap-limited)	+6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr)	$3,445/mo	−$5,222/mo	-22.4%	$10,035/mo	−$4,825/mo

Rental regulatory context (informational only — not legal advice):

California AB 1482 (Tenant Protection Act, Civ. Code § 1947.12) caps annual rent increases at 5% + local CPI (max 10%) on covered properties.

Common statutory exemption signals under AB 1482

Housing issued a certificate of occupancy within the last 15 years (rolling exemption under AB 1482).
Separately alienable single-family homes or condominiums not owned by a corporation, REIT, or LLC with a corporate member (when required statutory notice is in the lease).
Owner-occupied duplexes where the owner occupied one unit from the start of the tenancy.

Development projects on this parcel

New home
Finaled / completed1 unitsJun 12, 2025 – Jun 12, 2025

We group related permits and State housing reports into projects. That grouping is our inference, not an official record.

Permit history on this parcel

0 records

No building permits are recorded for this parcel since 2016.

Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel (APN) · Retrieved Oct 31, 2026 · Received and issued dates come from the County of Marin. The county publishes no final or expired status, so an issued permit stays 'Issued' after the work is done.

Housing activity reported to the State

Report year	Project / record	Type	Entitled	Permitted	Completed	Deed-restricted
2025	—(001-053-19)	ADU · Renter	—	—	1 (Jun 12, 2025)	—

Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: project (parcel) · Retrieved Oct 26, 2026 · From Fairfax's Housing Element Annual Progress Reports. A project can appear in several report years as it moves from entitlement to permit to completion.

Zoning & planning

Zoning: RS-6 (Fairfax)

Source: County of Marin GIS (MarinMap), Zoning (11 cities and unincorporated Marin) · Geography: zoning district polygon at parcel point · Retrieved Oct 31, 2026

Parcel facts

Lot size: 8,756 sq ft
Assessor land use: Single-Resid. - Improved
Addresses on parcel: 1

Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Oct 31, 2026

Official records

Assessor's property search
Search by parcel number 001-053-19. Assessed value is not market value.
Property tax bill
Search by parcel number 001-053-19 (Marin County Tax Collector)
County permit lookup
Permits issued in unincorporated Marin in the past 48 months. Each city keeps its own records.
FEMA Flood Map Service Center
The official flood hazard map for this location. Our reading of it is under What could be built here.

This site does not show owner names.

Scenario

Assumptions

Year 1 Rent

Year 1 Cash Flow

Cash-on-Cash

Break-Even Rent

Year 5 Cash Flow

Conservative

−8% starting rent, +3% vacancy, +3% combined maintenance/CapEx, 1.5%/yr rent growth

$2,990/mo

−$5,809/mo

-25.0%

$11,099/mo

−$5,807/mo

Base (your inputs)

Your entered assumptions, 3.0%/yr rent growth

$3,250/mo

−$5,436/mo

-23.3%

$10,273/mo

−$5,249/mo

Optimistic (cap-limited)

+6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr)

$3,445/mo

−$5,222/mo

-22.4%

$10,035/mo

−$4,825/mo

Report year

Project / record

Type

Entitled

Permitted

Completed

Deed-restricted

2025

—(001-053-19)

ADU · Renter

—

1 (Jun 12, 2025)

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