San Rafael 94901 · Bayside Acres · APN 186-131-03 · Unincorporated Marin
Since October 2024 within ½ mile: 2 homes completed, 3 permitted, 15 proposed or in review (1 of them deed-restricted affordable).
7 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.
56 permits within ½ mile since October 2024
The map shows new construction, ADUs, demolitions, additions, and renovations. Routine systems work (roofs, HVAC, water heaters) is counted but not mapped. Unit counts are as stated on permits.
Source: · Geography: permits located by parcel, ½ mile radius · Retrieved Oct 29, 2026
$1,947,000
Benchmark range: $1,713,000 – $2,181,000
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.
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 Unincorporated Marin's planning department before relying on it.
Sources: County of Marin GIS (MarinMap), Zoning (11 cities and unincorporated Marin) (retrieved Oct 29, 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 R1-B4 as single-family residential, checked against the zone description on Oct 24, 2026
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.
Permit issued and active for 6.1 yr (first record Sep 15, 2020), with no completion or new permit record in 4.7 yr. · 1 unit · $230,000 declared valuation
In "Entitled" for 8.2 yr (since Aug 28, 2018), with no new permit record in 8.2 yr. · 1 unit
Permit issued and active for 5 yr (first record Oct 11, 2021), with no completion or new permit record in 5 yr. · 1 unit
Permit issued and active for 7.6 yr (first record Mar 19, 2019), with no completion or new permit record in 5 yr. · 1 unit · $200,000 declared valuation
Permit issued and active for 4.8 yr (first record Dec 22, 2021), with no completion or new permit record in 4.8 yr. · 1 unit
Permit issued and active for 4.8 yr (first record Dec 22, 2021), with no completion or new permit record in 4.8 yr. · 1 unit
Latest published Zillow Home Value Index (ZHVI) update
Changed from $1,376,137 in September 2025 to $1,394,155 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94901 (not a parcel appraisal)
191 Oak Dr · 1 unit · $100,000 valuation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
726 Pt San Pedro Rd · 1 unit · $2,000,000 valuation
Records span Apr 14, 2023 to Apr 23, 2026 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
14 units · 1 affordable
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Annual ZIP 94901 home-value index checkpoint
Changed from $1,415,574 in September 2024 to $1,376,137 in September 2025.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94901 (not a parcel appraisal)
1 unit
Records span Mar 23, 2022 to Jun 9, 2025 (0 permits).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Solar / battery storage permit application filed (B42129)
Current status: Issued
6.72 kW Solar Project including a 13.5 kWh Battery System · Declared valuation: $37,552 · Contractor: Earthwise Energy Solutions Llc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Solar / battery storage permit issued (B42129)
Recorded status: Issued
6.72 kW Solar Project including a 13.5 kWh Battery System · Declared valuation: $37,552 · Contractor: Earthwise Energy Solutions Llc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
50 Marine Dr · 1 unit · $95,000 valuation
Records span Mar 29, 2024 to Mar 18, 2025 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Annual ZIP 94901 home-value index checkpoint
Changed from $1,407,895 in September 2023 to $1,415,574 in September 2024.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94901 (not a parcel appraisal)
22 Beach Dr · 1 unit · $1,200,000 valuation
Records span Jun 27, 2023 to Jan 23, 2024 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
1 unit
Records span Mar 24, 2022 to Oct 24, 2023 (0 permits).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Cross-referenced intelligence from our historical development graph—connecting parcels, permits, entity-resolved builders, empirical review-time distributions, and neighborhood renovation trends.
Explore full Unincorporated Marin development graph →Active in "Issued" for 6.1 yr (first record Sep 15, 2020) with no new permit activity recorded in 4.7 yr.
Active in "Issued" for 3.3 yr (first record Jun 27, 2023) with no new permit activity recorded in 2.8 yr. High-impact scale (1 housing unit, $1,200,000 declared valuation across 1 permit).
Active in "Issued" for 3.5 yr (first record Apr 14, 2023) with no new permit activity recorded in 6 mo. High-impact scale (1 housing unit, $2,000,000 declared valuation across 1 permit).
Active in "Issued" for 21 mo (first record Feb 3, 2025) with no new permit activity recorded in 21 mo.
Active in "Issued" for 4.5 yr (first record Apr 13, 2022) with no new permit activity recorded in 4.5 yr.
Active in "Issued" for 4.6 yr (first record Apr 1, 2022) with no new permit activity recorded in 4.6 yr.
HUD Small Area Fair Market Rent · ZIP 94901
HUD FY 2026 · 40th-percentile gross rentCensus ACS 5-year median gross rent (all bedroom counts combined):
Area home-value benchmarks (not an appraisal)
ZIP & neighborhood mediansUnder 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 ($19,450/yr) + local voter-approved bond debt ($2,918/yr) + fixed direct levies/Mello-Roos ($450/yr).
Mapped hazard zone insurance context on this parcel:
−$115,112/yr
Cash needed: $427,900
NOI: $2,908/yr
P&I: $9,835/mo
For $0/mo net cash flow
At $3,125/mo rent
| 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 | $2,875/mo | −$9,952/mo | -27.9% | $16,766/mo | −$10,008/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,125/mo | −$9,593/mo | -26.9% | $15,519/mo | −$9,471/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr) | $3,313/mo | −$9,386/mo | -26.3% | $15,158/mo | −$9,063/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.
Issued1 unitsSep 15, 2020 – Mar 1, 2022
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
6.72 kW Solar Project including a 13.5 kWh Battery System
Det A D U, Det Office, Det Carport *Appl Extended To 9/29/2022; Bbw/Nh*
Det Carport 9/16/20 Scope Added To Other Permit (T# 86460) Nh.
Det Office
Convert Basement To Liv Sp: Add Stairs T.D. 6/4/14
Replace Water-Proofing Membrane On (E) Front Porch/Deck ***Expired
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel (APN) · Retrieved Oct 29, 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.
No housing activity reported to the State for this parcel (2018–2025 reports).
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: project (parcel) · Retrieved Oct 26, 2026 · From Unincorporated Marin's Housing Element Annual Progress Reports. A project can appear in several report years as it moves from entitlement to permit to completion.
Source: County of Marin GIS (MarinMap), Zoning (11 cities and unincorporated Marin) · Geography: zoning district polygon at parcel point · Retrieved Oct 29, 2026
0.92 acres
Assessor's classification for assessment purposes. This is not zoning.
27 BAYVIEW DR; 29 BAYVIEW DR
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Oct 29, 2026
Search by parcel number 186-131-03. Assessed value is not market value.
Search by parcel number 186-131-03 (Marin County Tax Collector)
Permits issued in unincorporated Marin in the past 48 months. Each city keeps its own records.
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.