Mill Valley 94941 · APN 200-020-21 · Unincorporated Marin
Zoned A60 in Unincorporated Marin and mapped FEMA A flood / CAL FIRE very high fire hazard severity zone (state responsibility area) due diligence; benchmark value $2,234,000 ($1,899,000–$2,569,000).
Public building records show issued construction/renovation work on this parcel (17 total permits, latest May 27, 2026).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
Zone A: 1% annual chance flood (Special Flood Hazard Area) overlaps this parcel. Expect mandatory flood insurance for federally backed loans and floodplain elevation/mitigation rules for new units or SB 9 applications.
Source: FEMA National Flood Hazard Layer (parcel polygon)
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 Apr 1, 2024)
Automated synthesis of indexed municipal, county, state, and federal public records — informational context only, not a formal appraisal, survey, or legal/tax determination.
5 permits within ½ mile since November 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: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: permits located by parcel, ½ mile radius · Retrieved Nov 13, 2026
$2,234,000
Benchmark range: $1,899,000 – $2,569,000
New home at 1601 Shoreline Hwy: Active in "Issued" for 12.9 yr (first record Dec 10, 2013) with no new permit activity recorded in 12.5 yr. High-impact scale ($1,200,000 declared valuation across 1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$2,178/mo). Confirm exact Mello-Roos / CFD special assessments on the county tax bill.
Source: CA Const. Art. XIIIA (Prop 13) · County Tax Collector
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.
No ADU or new-home permits recorded within ¼ mile in this window.
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 A60 as agricultural, 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 12.9 yr (first record Dec 10, 2013), with no completion or new permit record in 12.5 yr. · $1,200,000 declared valuation
Latest published Zillow Home Value Index (ZHVI) update
Changed from $1,980,059 in September 2025 to $2,181,389 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94941 (not a parcel appraisal)
Roof replacement permit application filed (B46932)
Current status: Issued
ReRoofing · Declared valuation: $40,585 · Contractor: Residential And Commercial Roofing Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Roof replacement permit application filed (B46933)
Current status: Issued
ReRoofing · Declared valuation: $14,885 · Contractor: Residential And Commercial Roofing Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Roof replacement permit application filed (B46934)
Current status: Issued
ReRoofing · Declared valuation: $13,968 · Contractor: Residential And Commercial Roofing Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Roof replacement permit issued (B46932)
Recorded status: Issued
ReRoofing · Declared valuation: $40,585 · Contractor: Residential And Commercial Roofing Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Roof replacement permit issued (B46933)
Recorded status: Issued
ReRoofing · Declared valuation: $14,885 · Contractor: Residential And Commercial Roofing Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Roof replacement permit issued (B46934)
Recorded status: Issued
ReRoofing · Declared valuation: $13,968 · Contractor: Residential And Commercial Roofing Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Annual ZIP 94941 home-value index checkpoint
Changed from $2,042,452 in September 2024 to $1,980,059 in September 2025.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94941 (not a parcel appraisal)
Remodel / interior alteration permit issued (179754)
Recorded status: Issued
Repair Fire Damaged Building · Declared valuation: $100,000 · Contractor: Owner
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
General repair permit issued (179122)
Recorded status: Issued
New Soldier Pile Retaining Wall Below Failed Wall · Declared valuation: $148,888 · Contractor: Ezra Construction
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Annual ZIP 94941 home-value index checkpoint
Changed from $2,038,275 in September 2023 to $2,042,452 in September 2024.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94941 (not a parcel appraisal)
General repair permit application filed (179122)
Current status: Issued
New Soldier Pile Retaining Wall Below Failed Wall · Declared valuation: $148,888 · Contractor: Ezra Construction
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Remodel / interior alteration permit application filed (179754)
Current status: Issued
Repair Fire Damaged Building · Declared valuation: $100,000 · Contractor: Owner
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Annual ZIP 94941 home-value index checkpoint
Changed from $2,149,518 in September 2022 to $2,038,275 in September 2023.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94941 (not a parcel appraisal)
Annual ZIP 94941 home-value index checkpoint
Changed from $1,944,714 in September 2021 to $2,149,518 in September 2022.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94941 (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 12.9 yr (first record Dec 10, 2013) with no new permit activity recorded in 12.5 yr. High-impact scale ($1,200,000 declared valuation across 1 permit).
Issued after 11 mo (4.2× the 83d median) — slower than 90% of remodel / interior alteration permits in Unincorporated Marin (median 83d, 90th pct 266d, n=1,054).
Pending in review for 11.4 yr (50.0× the 83d median) — slower than 90% of general repair permits in Unincorporated Marin (median 83d, 90th pct 328d, n=693).
Issued after 8 mo (2.8× the 83d median) — above the 75th percentile for general repair permits in Unincorporated Marin (median 83d, 75th pct 181d, n=693).
Issued after 13 mo (2.4× the 164d median) — above the 75th percentile for new garage / accessory structure permits in Unincorporated Marin (median 164d, 75th pct 294d, n=356).
| Builder / contractor | Primary specialty | Here / ½ mi | ½ mi valuation | Citywide 24m trend |
|---|---|---|---|---|
| Kaufman Construction | General repair | 4 on parcel4 in ½ mi | $1,705,500 | 0 vs 0 prior |
| Residential And Commercial Roofing | Roof replacement | 3 on parcel3 in ½ mi | $69,438 | 0 vs 0 prior |
| Owner | Remodel / interior alteration | 2 on parcel2 in ½ mi | $160,000 |
| 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-useOn this parcel | 21 | 272d | 292d | 293d | 313d | 293d(vs 197d prior) |
| New garage / accessory structureOn this parcel | 356 | 104d | 164d | 294d | 485d |
HUD Small Area Fair Market Rent · ZIP 94941
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 ($22,350/yr) + local voter-approved bond debt ($3,353/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.
−$128,381/yr
Cash needed: $491,700
NOI: $7,235/yr
P&I: $11,301/mo
For $0/mo net cash flow
At $3,950/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 | $3,634/mo | −$11,152/mo | -27.2% | $19,201/mo | −$11,198/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,950/mo | −$10,698/mo | -26.1% | $17,772/mo | −$10,520/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr) | $4,187/mo | −$10,438/mo | -25.5% | $17,360/mo | −$10,004/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.
IssuedDec 10, 2013 – May 1, 2014
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
ReRoofing
ReRoofing
ReRoofing
Repair Fire Damaged Building
New Soldier Pile Retaining Wall Below Failed Wall
T/O existing tar/gravel roof over Kitchen and dispose of debris. Replace with same tar/gravel Class A assembly. No new sheathing required. — ReRoofing; With Electronic Inspection
Tear-Off & Re-Roof (E-Inspection)
New Headwall As Part Of Creek Daylighting Project T.D. 8/10/15. Work Not Being Done 1/16/18 Kp Plasns Tossed
Rf Mtd Thermal System - Express
Construct New Laundry Room*** Extended To 11/30/18 T.D. 8/27/14
Temp Power For Creek Restoration 3 Months Duration. Load Center Approx 1085' West Of Lower Field Svc Panel
Repl Steel Plate Bridge W/ H S 20 Vehicle Bridge Td. 09/19/13
Retaining Wall By Path Of Travel Walkway/Ada Ramp
Retaining Wall By North Side Of Basement Remodel
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
66.80 acres
Assessor's classification for assessment purposes. This is not zoning.
1601 SHORELINE HWY
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Nov 13, 2026
Search by parcel number 200-020-21. Assessed value is not market value.
Search by parcel number 200-020-21 (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.
| Marin County Roofing Merged: MARIN COUNTY ROOFING · MARIN COUNTY ROOFING CO INC | Roof replacement | 2 on parcel2 in ½ mi | $34,000 | 0 vs 0 prior |
| Prunuske Chatham | New garage / accessory structure | 1 on parcel1 in ½ mi | $255,909 | 0 vs 0 prior |
| Ezra Construction | General repair | 1 on parcel1 in ½ mi | $148,888 | 0 vs 0 prior |
| Occidental Power Solar And Cogeneration | Solar / battery storage | 1 on parcel1 in ½ mi | $39,985 | 0 vs 0 prior |
| Sawyer Construction | New garage / accessory structure | 1 on parcel1 in ½ mi | $17,000 | 1 vs 0 prior |
| Sesco | Electrical / panel | 1 on parcel1 in ½ mi | $9,100 | 0 vs 0 prior |
| 159d(vs 205d prior) |
| Accessory dwelling unit (new or conversion) | 298 | 120d | 204d | 331d | 549d | 214d(vs 181d prior) |
| Addition (adds square footage) | 316 | 103d | 160d | 249d | 440d | 157d(vs 167d prior) |
| Remodel / interior alterationOn this parcel | 1,054 | 36d | 83d | 148d | 266d | 112d(vs 77d prior) |
| Commercial tenant improvementOn this parcel | 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.
Demo Detached Bldg & Partial Demo Of Attached Bldg. Build New Bldg T.D. 2/5/14
Tenant Improvement - Remodel (E) Basement Offices T.D. 2/5/14
Reroof ***Expired - Extend To 3/10/16