Lagunitas 94938 · San Geronimo Valley · APN 168-240-20 · Unincorporated Marin
Zoned ARP-20-SGV in Unincorporated Marin and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,043,000 ($918,000–$1,168,000).
On-parcel permit history is indexed through May 29, 2025, letting you verify roof, HVAC, electrical, or structural work against seller disclosures.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
about 9% of the lot of the parcel intersects Zone D: possible but undetermined 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 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.
2 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
$1,043,000
Benchmark range: $918,000 – $1,168,000
Electrical / panel (179220): Issued after 2 mo — slower than 90% of electrical / panel permits in Unincorporated Marin (median 0d, 90th pct 2d, n=3,019).
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 (~$1,037/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 ARP-20-SGV 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.
Latest published Zillow Home Value Index (ZHVI) update
Changed from $980,329 in September 2025 to $1,044,557 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94938 (not a parcel appraisal)
Annual ZIP 94938 home-value index checkpoint
Changed from $1,021,850 in September 2024 to $980,329 in September 2025.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94938 (not a parcel appraisal)
Electrical / panel permit issued (179220)
Recorded status: Issued
Upgrades To (E) Cell Tower - A T & T · Declared valuation: $25,000 · Contractor: Endeavor Wireless Construction Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Electrical / panel permit application filed (179220)
Current status: Issued
Upgrades To (E) Cell Tower - A T & T · Declared valuation: $25,000 · Contractor: Endeavor Wireless Construction Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Plumbing / water heater / sewer permit application filed (92805)
Current status: Applied
Replace Back-Up Generator With 50kw Generator And 229 Gal Fuel Tank · Declared valuation: $50,000
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Solar / battery storage permit application filed (92649)
Current status: Applied
Ground Mount Solar 21 Module, 8.40 K W; Energy Storage System · Declared valuation: $34,739
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Annual ZIP 94938 home-value index checkpoint
Changed from $1,003,796 in September 2023 to $1,021,850 in September 2024.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94938 (not a parcel appraisal)
Roof replacement permit application filed (B37663)
Current status: Issued
Sweep off existing roof material. Replace with foam overlay. 2 squares. — ReRoofing · Declared valuation: $8,500 · Contractor: Armstrong Installation Service A California Corpor
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Roof replacement permit issued (B37663)
Recorded status: Issued
Sweep off existing roof material. Replace with foam overlay. 2 squares. — ReRoofing · Declared valuation: $8,500 · Contractor: Armstrong Installation Service A California Corpor
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Annual ZIP 94938 home-value index checkpoint
Changed from $1,041,583 in September 2022 to $1,003,796 in September 2023.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94938 (not a parcel appraisal)
Other permit issued (173273)
Recorded status: Issued
Telecom Site Modification: Install [6] All Thread Rods To Reinforce [E] Tower - T-Mobile B W O P · Declared valuation: $10,000 · Contractor: Nrci Telecom
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
New garage / accessory structure permit issued (172723)
Recorded status: Issued
T-Mobile Upgrades- Remove/Install Antennas, Tma's, Rrh's, Hybrid Cables, Basebands, 2 Cabinets, Etc. · Declared valuation: $30,000 · Contractor: Metropolitan Electrical Construction Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Other permit application filed (173273)
Current status: Issued
Telecom Site Modification: Install [6] All Thread Rods To Reinforce [E] Tower - T-Mobile B W O P · Declared valuation: $10,000 · Contractor: Nrci Telecom
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Annual ZIP 94938 home-value index checkpoint
Changed from $997,851 in September 2021 to $1,041,583 in September 2022.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94938 (not a parcel appraisal)
Electrical / panel permit issued (172066)
Recorded status: Issued
Verizon. Rrmv 9 Antennas & 9 Rru's From Tower; Inst 12 Antennas, 6 Rru's, 1 Cable, 1 Ovp & Mount Reinforcements On Tower & 1 Ovp On Ground · Declared valuation: $30,000 · Contractor: Modus Rex Llc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
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 →Issued after 2 mo — slower than 90% of electrical / panel permits in Unincorporated Marin (median 0d, 90th pct 2d, n=3,019).
Pending in review for 2 yr — slower than 90% of plumbing / water heater / sewer permits in Unincorporated Marin (median 0d, 90th pct 0d, n=2,211).
Pending in review for 2.1 yr — slower than 90% of solar / battery storage permits in Unincorporated Marin (median 0d, 90th pct 2d, n=2,977).
Issued after 4 mo — slower than 90% of other permits in Unincorporated Marin (median 0d, 90th pct 71d, n=1,560).
Issued after 3 mo — slower than 90% of electrical / panel permits in Unincorporated Marin (median 0d, 90th pct 2d, n=3,019).
Pending in review for 5.1 yr — slower than 90% of electrical / panel permits in Unincorporated Marin (median 0d, 90th pct 2d, n=3,019).
| Builder / contractor | Primary specialty | Here / ½ mi | ½ mi valuation | Citywide 24m trend |
|---|---|---|---|---|
| Wsd Engineering Dba Wsd Construction | Electrical / panel | 2 on parcel2 in ½ mi | $45,000 | 0 vs 0 prior |
| Electric Tech Construction | Electrical / panel | 1 on parcel1 in ½ mi | $30,000 | 0 vs 0 prior |
| Metropolitan Electrical Construction | New garage / accessory structure | 1 on parcel1 in ½ mi | $30,000 |
| 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-use | 21 | 272d | 292d | 293d | 313d | 293d(vs 197d prior) |
| New garage / accessory structureOn this parcel | 356 | 104d | 164d | 294d | 485d | 159d(vs 205d prior) |
HUD Small Area Fair Market Rent · ZIP 94938
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 ($10,450/yr) + local voter-approved bond debt ($1,568/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.
−$49,919/yr
Cash needed: $229,900
NOI: $13,490/yr
P&I: $5,284/mo
For $0/mo net cash flow
At $3,150/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 | $2,898/mo | −$4,522/mo | -23.6% | $9,210/mo | −$4,506/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,150/mo | −$4,160/mo | -21.7% | $8,525/mo | −$3,965/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr) | $3,339/mo | −$3,952/mo | -20.6% | $8,327/mo | −$3,554/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.
Upgrades To (E) Cell Tower - A T & T
Replace Back-Up Generator With 50kw Generator And 229 Gal Fuel Tank
Ground Mount Solar 21 Module, 8.40 K W; Energy Storage System
Sweep off existing roof material. Replace with foam overlay. 2 squares. — ReRoofing
Telecom Site Modification: Install [6] All Thread Rods To Reinforce [E] Tower - T-Mobile B W O P
T-Mobile Upgrades- Remove/Install Antennas, Tma's, Rrh's, Hybrid Cables, Basebands, 2 Cabinets, Etc.
Verizon. Rrmv 9 Antennas & 9 Rru's From Tower; Inst 12 Antennas, 6 Rru's, 1 Cable, 1 Ovp & Mount Reinforcements On Tower & 1 Ovp On Ground
Rmv 3 Antennas, 3 Tmas & 6 Coax @ Tower. Rmv 6 Rrh's @ Ground. Add 6 Antennas,3 Rrh's, & 2 Hybrid Cables @ Tower, 2 Cabinets & Add'l Racks @ Ground
Rmv 3 Antennas, 3 Tmas & 6 Coax @ Tower. Rmv 6 Rrh's @ Ground. Add 6 Antennas,3 Rrh's, & 2 Hybrid Cables @ Tower, 2 Cabinets & Add'l Racks @ Ground
Modification To Cell Site On Existing Monopine (At&T Mobility)
Replace 9 Antennas And 6 R R Us On Esisting Monopine T.D. 9-18-20
Repl 3 Antennae; 3 New R R Us And 1 Cable; Equip In Existing Cabinets - T-Mobile T.D. 7/24/19
Install, Rmv, & Replc 2 Antennas, & Install 1 New Rrus B2/B66, & B5/B12 Unit. T.D. 1-16-20
At&T Replacing 6 Antenas And 6 Rrus T.D. 5/29/19
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
11.92 acres
Assessor's classification for assessment purposes. This is not zoning.
1 MOUNTAIN KING RD
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Nov 13, 2026
Search by parcel number 168-240-20. Assessed value is not market value.
Search by parcel number 168-240-20 (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.
| 0 vs 0 prior |
| Modus Rex | Electrical / panel | 1 on parcel1 in ½ mi | $30,000 | 0 vs 0 prior |
| Endeavor Wireless Construction | Electrical / panel | 1 on parcel1 in ½ mi | $25,000 | 0 vs 0 prior |
| General Dynamics Information Technology | Electrical / panel | 1 on parcel1 in ½ mi | $25,000 | 0 vs 0 prior |
| Vinculums Services | Electrical / panel | 1 on parcel1 in ½ mi | $24,000 | 0 vs 0 prior |
| Nrci Telecom | Other | 1 on parcel1 in ½ mi | $10,000 | 0 vs 0 prior |
| Stc Netcom | Electrical / panel | 1 on parcel1 in ½ mi | $10,000 | 0 vs 0 prior |
| Armstrong Installation Service A California Corpor | Roof replacement | 1 on parcel1 in ½ mi | $8,500 | 0 vs 0 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 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.
Inst 3 New R R Us In Shelter; Inst 2 X M Us In Existing Data Rack - A T & T T.D. 4/8/19
Generator, Back Up 12/5/18
Sprint - Antennas/Radios To Existing Tower, Cabinets T.D. 5/3/18
Sprint - Retaining Wall
Generator (30 K W Diesel) Install Inside Telecom Facility Compound T.D. 10/10/16
Replace Antennas, Install New Coax Cables T.D., 3/29/16
At&T - Replace 3 Antennas, Add 3 R R U's Near Antennas T.D. 7/27/15***Expired
Repl 3 Antennae; Add 3 Remote Radio Units, Add Surge Protector And Cables - Verizon T..D 4/16/14
. Generator For Cell Site T.D. 3/17/14 - Cancelled Per A T & T 5/26/15 Kp