Mill Valley 94941 · Strawberry · APN 043-021-24 · Unincorporated Marin
Zoned RMP-40 in Unincorporated Marin with likely ministerial ADU eligibility and mapped CAL FIRE moderate fire hazard severity zone (local responsibility area) due diligence; benchmark value $2,466,000 ($2,170,000–$2,762,000).
Zone RMP-40 allows residential use qualifying for ministerial ADU review under state law (6 ADU permits permitted within ¼ mile in 36 months).
Source: Unincorporated Marin zoning · CA Gov. Code 66314
Public building records show issued construction/renovation work on this parcel (22 total permits, latest Jun 30, 2022).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
43 substantial renovation & housing permits over 24 months (28.4 per 1,000 parcels vs. 16.4 citywide baseline) (#1 of 22 neighborhoods).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (Strawberry)
Automated synthesis of indexed municipal, county, state, and federal public records — informational context only, not a formal appraisal, survey, or legal/tax determination.
$2,466,000
Benchmark range: $2,170,000 – $2,762,000
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)
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: New home at 55 Thomas Dr (0.29 mi N, applied). 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 (~$2,401/mo). Confirm exact Mello-Roos / CFD special assessments on the county tax bill.
Source: CA Const. Art. XIIIA (Prop 13) · County Tax Collector
Since November 2024 within ½ mile: 1 homes completed, 13 permitted, 5 proposed or in review; 1 demolition.
20 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.
320 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
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 RMP-40 as multifamily 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 12.5 yr (first record May 13, 2014), with no completion or new permit record in 11.3 yr. · 1 unit · $350,000 declared valuation
Permit issued and active for 10.3 yr (first record Jul 26, 2016), with no completion or new permit record in 10 yr. · 1 unit · $225,000 declared valuation
Permit issued and active for 9.6 yr (first record Mar 21, 2017), with no completion or new permit record in 9.6 yr. · $10,280 declared valuation
Permit issued and active for 9.7 yr (first record Mar 14, 2017), with no completion or new permit record in 9.5 yr. · 1 unit · $510,000 declared valuation
Permit issued and active for 9.7 yr (first record Mar 14, 2017), with no completion or new permit record in 9.5 yr. · 1 unit · $438,000 declared valuation
Permit issued and active for 9.7 yr (first record Mar 14, 2017), with no completion or new permit record in 9.5 yr. · 1 unit · $438,000 declared valuation
Nearby roof replacement (102 Inez Pl): First appeared in published agency feed
Record B49099 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby electrical / panel (209 Belvedere Dr): First appeared in published agency feed
Record B49016 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby addition (adds square footage) (127 Reed Blvd): First appeared in published agency feed
Record 94633 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby remodel / interior alteration (87 Bay Vista Dr): First appeared in published agency feed
Record 94634 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby remodel / interior alteration (199 Belvedere Dr (60a Bayview Ter)): First appeared in published agency feed
Record 182907 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby roof replacement (52 S Knoll Rd): First appeared in published agency feed
Record B49011 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby remodel / interior alteration (199 Belvedere Dr): No longer present in latest agency feed
Record 94259 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby accessory dwelling unit (new or conversion) (29 Meadow Dr): First appeared in published agency feed
Record 182865 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby sign (800 Redwood Hwy Frontage Rd #612): First appeared in published agency feed
Record 182871 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Record 94052 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby sign (800 Redwood Hwy Frontage Rd #612): No longer present in latest agency feed
Record 94523 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Record 94611 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
59 Bay Vista Dr · 1 unit · $100,000 valuation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
20 Strawberry Cir · 1 unit · $732,250 valuation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
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)
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 →In "Applied" for 6.2 yr (since Sep 1, 2020), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121). High-impact scale (1 housing unit, $1,000,000 declared valuation across 1 permit).
Active in "Issued" for 3.4 yr (first record Jun 5, 2023) with no new permit activity recorded in 16 mo. High-impact scale (1 housing unit, $1,493,000 declared valuation across 1 permit).
Active in "Issued" for 2.6 yr (first record Apr 17, 2024) with no new permit activity recorded in 19 mo. High-impact scale (1 housing unit, $790,000 declared valuation across 1 permit).
Active in "Applied" for 8.1 yr (first record Oct 3, 2018) with no new permit activity recorded in 8.1 yr. High-impact scale ($1,600,000 declared valuation across 1 permit).
In "Applied" for 4.6 yr (since Apr 11, 2022), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
In "Applied" for 6 yr (since Nov 17, 2020), 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 1,512 parcels
+52.9% YoY
City baseline: 16.4 / 1k
43 in trailing 24m
Includes 8 ADUs
| Builder / contractor | Primary specialty | Here / ½ mi | ½ mi valuation | Citywide 24m trend |
|---|---|---|---|---|
| Perchos Construction | Remodel / interior alteration | 8 on parcel8 in ½ mi | $209,800 | 1 vs 2 prior |
| Badger Electric | Electrical / panel | 3 on parcel3 in ½ mi | $8,000 | 0 vs 0 prior |
| Envisage Construction | Remodel / interior alteration | 2 on parcel2 in ½ mi | $124,736 |
| 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 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 ($24,650/yr) + local voter-approved bond debt ($3,698/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.
−$144,982/yr
Cash needed: $542,300
NOI: $4,590/yr
P&I: $12,464/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 | −$12,536/mo | -27.7% | $21,132/mo | −$12,599/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,950/mo | −$12,082/mo | -26.7% | $19,560/mo | −$11,921/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 | −$11,821/mo | -26.2% | $19,105/mo | −$11,406/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.
Remodel Unit 12; [N] Subpanel, Rewire All Recepticals And Lights - Express
Retro fit windows and doors replacement 26 windows and 4 sliding doors — Non-structural Door/Window Replacement
Kitchen & Bath Rmdl; Windows & Door; Relocate Subpanel; Led Lights
Outlets in two bedrooms, living room and dining room are not grounded(we want to ground them) we want to bring dedicated circuit for fridge and countertop outlets. We want to relocate old Zinsco panel to hallway ( about feet away from existing location) — New Circuits / Outlets, Replace Circuits / Outlets
Kitch, & Bth Rmdl, Reloc. Elect Panel & Non Struc. Panel. - Express
Rmdl Kitchen & Bath, Panel Upgrade, Change Sliding Door Like For Like
replace failed furnace with new furnace in apt #7 — Replace Mechanical Appliance
Seismic Upgrade -Bldg 3 & 4 T.D. 6/19/18
Seismic Upgrade -Bldg 1&2 T.D. 6/19/18
Remove and replace windows in-kind. — Non-structural Door/Window Replacement
Replace Railing (Bld 3+4) T.D. 6/25/18
Replace Railing (Bld 1+2) T.D. 6/25/18
Scope of work for 11 S Knoll Rd. Unit #21 Mill Valley Ca. -Replace all existing wiring. -Boxes and Devices. -Relocate and replace existing panel. -Up to code. — Replace Circuits / Outlets
Job Site: 11 S knoll Rd. unit #15 -To replace all existing wiring. -Boxes and devices. -Relocate and replace existing panel. -Up to code. — Service Upgrade, Replace Circuits / Outlets
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
0.48 acres
Assessor's classification for assessment purposes. This is not zoning.
11 S KNOLL RD
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Nov 13, 2026
Search by parcel number 043-021-24. Assessed value is not market value.
Search by parcel number 043-021-24 (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.
| Mc Leran | Roof replacement | 1 on parcel1 in ½ mi | $62,300 | 0 vs 0 prior |
| Yellow Zone | Remodel / interior alteration | 1 on parcel1 in ½ mi | $26,000 | 0 vs 0 prior |
| Arm All Construction | Windows / doors / siding | 1 on parcel1 in ½ mi | $14,000 | 0 vs 0 prior |
| V Electric | Electrical / panel | 1 on parcel1 in ½ mi | $6,350 | 0 vs 0 prior |
| Golden Gate Home Improvement | Windows / doors / siding | 1 on parcel1 in ½ mi | $4,600 | 0 vs 0 prior |
| Ernest Ongaro And Sons | HVAC / heat pump | 1 on parcel1 in ½ mi | $3,100 | 0 vs 0 prior |
| Charles Window And Door | Windows / doors / siding | 1 on parcel1 in ½ mi | $2,000 | 0 vs 0 prior |
| 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 improvement | 81 | 99d | 148d | 233d | 443d | 152d(vs 150d prior) |
| Roof replacementOn this parcel | 3,663 | 0d | 0d | 0d | 0d | 0d |
| HVAC / heat pumpOn this parcel | 2,946 | 0d | 0d | 0d | 0d | 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.
Replace 5 windows like for like in unit #21 — Non-structural Door/Window Replacement
Replace 5 windows like for like in unit 15 — Non-structural Door/Window Replacement
Non Struct. Bth Rmdl & Wndws - Express
apartment #9 - rewire; replace and relocate main panel; add outlets as required — Service Upgrade, Replace Circuits / Outlets
Replacing 4 windows like for like in unit 9 — Non-structural Door/Window Replacement
Replace 4 windows in unit 5 — Non-structural Door/Window Replacement
Tear-Off & Re-Roof (E-Inspection)
Replace 2 Windows - Size For Size