San Rafael 94901 · Country Club · APN 016-012-55 · Unincorporated Marin
Zoned R1-B4 in Unincorporated Marin with likely ADU & SB 9 infill eligibility and mapped CAL FIRE moderate fire hazard severity zone (local responsibility area) due diligence; benchmark value $1,757,000 ($1,546,000–$1,968,000).
Zoned R1-B4 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 88,819 sq ft lot. Local precedent is active with 1 ADU permit within ¼ mile over the last 36 months.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
Public building records show issued construction/renovation work on this parcel (2 total permits, latest Feb 7, 2025).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
all of the lot of the parcel intersects Zone X: minimal flood hazard. Outside mandatory federal SFHA insurance rules, but check local drainage and finished-floor requirements.
Source: FEMA National Flood Hazard Layer (parcel polygon)
Automated synthesis of indexed municipal, county, state, and federal public records — informational context only, not a formal appraisal, survey, or legal/tax determination.
Since November 2024 within ½ mile: 3 permitted.
3 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.
49 permits within ½ mile since November 2024
$1,757,000
Benchmark range: $1,546,000 – $1,968,000
Located in a mapped Fire Hazard Severity Zone. Expect Chapter 7A ignition-resistant building standards, defensible-space inspections, and stricter property insurance underwriting.
Source: CAL FIRE FHSZ (map Mar 24, 2025)
Closest lead: Accessory dwelling unit at 41 Fairway Dr (adu 41a) (0.36 mi SW, issued). Inspect timeline history before assuming near-term completion.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · HCD APR (½-mile radius)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,721/mo). Confirm exact Mello-Roos / CFD special assessments on the county tax bill.
Source: CA Const. Art. XIIIA (Prop 13) · County Tax Collector
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: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: permits located by parcel, ½ mile radius · Retrieved Nov 13, 2026
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 Nov 13, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the State Responsibility Area (effective 2024-04-01) (retrieved Nov 9, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the Local Responsibility Area (map dated 2025-03-24) (retrieved Nov 9, 2026) · FEMA, National Flood Hazard Layer — flood hazard zones (retrieved Nov 9, 2026) · FEMA, National Flood Hazard Layer — FIRM panels (retrieved Nov 9, 2026) · California Geological Survey, Alquist-Priolo Earthquake Fault Zones (retrieved Nov 9, 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 10.5 yr (first record May 23, 2016), with no completion or new permit record in 10.4 yr. · $15,000 declared valuation
In "Entitled" for 6.3 yr (since Aug 4, 2020), with no new permit record in 6.3 yr. · 1 unit
Permit issued and active for 6.2 yr (first record Sep 17, 2020), with no completion or new permit record in 6.2 yr. · 1 unit
In "Entitled" for 6 yr (since Oct 29, 2020), with no new permit record in 6 yr. · 1 unit
Permit issued and active for 5.1 yr (first record Oct 11, 2021), with no completion or new permit record in 5.1 yr. · 1 unit
Permit issued and active for 5 yr (first record Nov 10, 2021), with no completion or new permit record in 5 yr. · 1 unit
Nearby remodel / interior alteration (10 Morgan Ln): Description text was updated
Record 94603 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby plumbing / water heater / sewer (25 Moncada Way): First appeared in published agency feed
Record B48957 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby remodel / interior alteration (10 Morgan Ln): First appeared in published agency feed
Record 94603 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
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)
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)
100 Summit Ave (Adu 100a) · 1 unit · $100,000 valuation
Records span Aug 25, 2023 to Aug 11, 2025 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
41 Fairway Dr (Adu 41a) · 1 unit · $2,025,000 valuation
Records span Dec 4, 2024 to May 5, 2025 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
1 Morgan Ln (Adu 1a) · 1 unit · $65,000 valuation
Records span May 31, 2023 to Mar 12, 2025 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Solar / battery storage permit application filed (B41151)
Current status: Issued
Install 1 Tesla Powerwall battery storage system, 1 tesla backup gateway, and a new backup load panel · Declared valuation: $17,000 · Contractor: Sunnova Energy Corporation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Solar / battery storage permit issued (B41151)
Recorded status: Issued
Install 1 Tesla Powerwall battery storage system, 1 tesla backup gateway, and a new backup load panel · Declared valuation: $17,000 · Contractor: Sunnova Energy Corporation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
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)
53 Moncada Way (Aka 53a) · 1 unit · $300,000 valuation
Records span Jun 7, 2023 to Dec 12, 2023 (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)
53 Moncada Way · 1 unit · $6,000 valuation
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 $1,475,874 in September 2022 to $1,407,895 in September 2023.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94901 (not a parcel appraisal)
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 23 mo (first record Dec 4, 2024) with no new permit activity recorded in 18 mo. High-impact scale (1 housing unit, $2,025,000 declared valuation across 1 permit).
In "Applied" for 4.6 yr (since Mar 22, 2022), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
In "Entitled" for 6.3 yr (since Aug 4, 2020), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
In "Entitled" for 3.3 yr (since Jul 19, 2023), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
In "Entitled" for 6 yr (since Oct 29, 2020), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
In "Applied" for 4 yr (since Nov 23, 2022), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
Substantial improvements (additions, interior remodels, ADUs, commercial TI, and new builds) across 323 parcels
Small prior baseline
City baseline: 16.4 / 1k
5 in trailing 24m
Includes 6 ADUs
| Builder / contractor | Primary specialty | Here / ½ mi | ½ mi valuation | Citywide 24m trend |
|---|---|---|---|---|
| Powur PBC Which Will Do Business In California As | Solar / battery storage | 1 on parcel1 in ½ mi | $38,500 | 0 vs 0 prior |
| Sunnova Energy | Solar / battery storage | 1 on parcel1 in ½ mi | $17,000 | 0 vs 0 prior |
| Owner Builder Recent nearby: 41 Fairway Dr (Adu 41a) (May 5, 2025) | New garage / accessory structure | 13 in ½ mi |
| Permit category | Sample (n) | 25th pct | Median (50th) | 75th pct | 90th pct | Recent 24m median |
|---|---|---|---|---|---|---|
| New single-family home | 121 | 166d | 253d | 456d | 686d | 211d(vs 273d prior) |
| New multifamily / condos / mixed-use | 21 | 272d | 292d | 293d | 313d | 293d(vs 197d prior) |
| Accessory dwelling unit (new or conversion) | 298 | 120d | 204d | 331d | 549d | 214d(vs 181d prior) |
| Addition (adds square footage) |
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 ($17,550/yr) + local voter-approved bond debt ($2,633/yr) + fixed direct levies/Mello-Roos ($450/yr).
Mapped hazard zone insurance context on this parcel:
Model adding a backyard ADU or garage conversion under California's Prop 13 blended new-construction assessment (existing house & land tax base stays intact; only ADU build cost is assessed) and SB 13 impact-fee rules.
−$101,398/yr
Cash needed: $386,100
NOI: $5,093/yr
P&I: $8,874/mo
For $0/mo net cash flow
At $3,125/mo gross 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 | −$8,809/mo | -27.4% | $15,171/mo | −$8,850/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,125/mo | −$8,450/mo | -26.3% | $14,042/mo | −$8,313/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 | −$8,243/mo | -25.6% | $13,716/mo | −$7,905/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.
Install 1 Tesla Powerwall battery storage system, 1 tesla backup gateway, and a new backup load panel
Roof Mounted Solar; 14.4 KW; 36 Modules, 36 Micro-Inverters; DERATE: (E) 200A MAIN BREAKER TO BE DERATED TO (N) 175A TO ALLOW BACKFEED OF 60A
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel (APN) · Retrieved Nov 13, 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 Nov 9, 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 Nov 13, 2026
2.04 acres
Assessor's classification for assessment purposes. This is not zoning.
280 MARGARITA DR
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Nov 13, 2026
Search by parcel number 016-012-55. Assessed value is not market value.
Search by parcel number 016-012-55 (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.
| $4,219,000 |
| 226 vs 240 prior−6% |
| Owner Recent nearby: 180 Summit Ave (Jun 3, 2019) | Remodel / interior alteration | 6 in ½ mi | $185,000 | 25 vs 15 prior+67% |
| Coastal Construction Recent nearby: 355 Margarita Dr (Aug 24, 2017) | New garage / accessory structure | 4 in ½ mi | $297,000 | 0 vs 0 prior |
| Hayes And Assoc Const Recent nearby: 76 Moncada Way (Aug 2, 2017) | Addition (adds square footage) | 2 in ½ mi | $679,000 | 0 vs 0 prior |
| Lingeman Design Build Recent nearby: 280 Highland Ave (Mar 23, 2017) | Addition (adds square footage) | 2 in ½ mi | $610,000 | 0 vs 0 prior |
| Marshall White Construction Recent nearby: 175 Montecito Rd (Feb 18, 2016) | Addition (adds square footage) | 2 in ½ mi | $400,000 | 0 vs 0 prior |
| Herbs Pool Service Recent nearby: 76 Moncada Way (Oct 18, 2021) | Pool / spa | 2 in ½ mi | $125,378 | 0 vs 4 prior |
| Kitchens And More Recent nearby: 30 Fairway Dr (Nov 26, 2018) | Remodel / interior alteration | 2 in ½ mi | $98,000 | 0 vs 0 prior |
| 316 |
| 103d |
| 160d |
| 249d |
| 440d |
| 157d(vs 167d prior) |
| Remodel / interior alteration | 1,054 | 36d | 83d | 148d | 266d | 112d(vs 77d prior) |
| Commercial tenant improvement | 81 | 99d | 148d | 233d | 443d | 152d(vs 150d prior) |
| Solar / battery storageOn this parcel | 2,977 | 0d | 0d | 0d | 2d | 0d |
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Computed from issued permits with recorded application and issuance dates over the trailing 60 months. Categories with fewer than 20 permits are excluded.