Larkspur 94939 · APN 020-103-08 · Larkspur
Since October 2024 within ½ mile: 10 permitted; 1 commercial or mixed-use project.
11 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.
150 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.
$2,266,000
Benchmark range: $1,926,000 – $2,606,000
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: permits located by parcel, ½ mile radius · Retrieved Oct 31, 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.
We don't have building permits for Larkspur, so we can't show what has been permitted nearby.
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 Larkspur's planning department before relying on it.
Sources: County of Marin GIS (MarinMap), Zoning (11 cities and unincorporated Marin) (retrieved Oct 31, 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 R-1 as single-family residential, from the code's name only
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 13 yr (first record Nov 12, 2013), with no completion or new permit record in 12.6 yr. · 1 unit · $1,000,000 declared valuation
Permit issued and active for 12.7 yr (first record Mar 6, 2014), with no completion or new permit record in 12.4 yr. · $2,400,000 declared valuation
Permit issued and active for 11.9 yr (first record Dec 8, 2014), with no completion or new permit record in 11.6 yr. · $1,000 declared valuation
Permit issued and active for 11.4 yr (first record May 19, 2015), with no completion or new permit record in 10.5 yr. · $80,000 declared valuation
Permit issued and active for 11.6 yr (first record Mar 18, 2015), with no completion or new permit record in 9.4 yr. · $7,200 declared valuation
Permit issued and active for 8.5 yr (first record May 9, 2018), with no completion or new permit record in 6.7 yr. · $345,000 declared valuation
Nearby other (70 Lancaster Ave): First appeared in published agency feed
Record B48941 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby commercial tenant improvement (250 Bon Air Rd): First appeared in published agency feed
Record 94609 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby permit (b8db6838c020c1df3849679810d5f2210e644e76): First appeared in published agency feed
Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby permit (d167602d8a61a9dbcae8bb0646178d41cefc3920): First appeared in published agency feed
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 $2,024,537 in September 2025 to $2,210,711 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94939 (not a parcel appraisal)
847 Sir Francis Drake Blvd · 1 unit · $240,000 valuation
Records span Mar 12, 2026 to Sep 30, 2026 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
70 Berens Dr (A D U 70 A) · 1 unit · $200,000 valuation
Records span Jul 18, 2025 to Nov 26, 2025 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Annual ZIP 94939 home-value index checkpoint
Changed from $2,152,181 in September 2024 to $2,024,537 in September 2025.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94939 (not a parcel appraisal)
1 unit
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)
675 Sir Francis Drake Blvd · $30,000 valuation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
30 Lancaster Ave (Adu 30a) · 1 unit · $415,000 valuation
Records span Nov 19, 2024 to Jun 20, 2025 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
59 Berens Dr (Adu 59a) · 1 unit · $700,000 valuation
Records span Oct 21, 2024 to Apr 22, 2025 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
29 Mcallister Ave · 1 unit · $100,000 valuation
Records span Aug 9, 2023 to Jan 30, 2025 (2 permits).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
18 Berens Dr · 1 unit · $350,000 valuation
Records span Aug 4, 2023 to Jan 16, 2025 (1 permit).
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 Larkspur development graph →Active in "Issued" for 22 mo (first record Jan 7, 2025) with no new permit activity recorded in 22 mo.
Active in "Entitled" for 3.7 yr (first record Feb 1, 2023) with no new permit activity recorded in 3.7 yr. High-impact scale (20 housing units, 4 deed-restricted affordable across 0 permits).
Active in "Issued" for 12.7 yr (first record Mar 6, 2014) with no new permit activity recorded in 12.4 yr. High-impact scale ($2,400,000 declared valuation across 2 permits).
Active in "Issued" for 13 yr (first record Nov 12, 2013) with no new permit activity recorded in 12.6 yr. High-impact scale (1 housing unit, $1,000,000 declared valuation across 1 permit).
Active in "Issued" for 3.9 yr (first record Dec 7, 2022) with no new permit activity recorded in 3 yr. High-impact scale (1 housing unit, $4,500,000 declared valuation across 1 permit).
Active in "Entitled" for 6.3 yr (first record Jul 14, 2020) with no new permit activity recorded in 6.3 yr.
HUD Small Area Fair Market Rent · ZIP 94939
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 ($22,650/yr) + local voter-approved bond debt ($3,398/yr) + fixed direct levies/Mello-Roos ($450/yr).
Insurance & hazard context:
−$127,834/yr
Cash needed: $498,300
NOI: $9,603/yr
P&I: $11,453/mo
For $0/mo net cash flow
At $4,100/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 | $3,772/mo | −$11,124/mo | -26.8% | $19,300/mo | −$11,154/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $4,100/mo | −$10,653/mo | -25.7% | $17,863/mo | −$10,451/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr) | $4,346/mo | −$10,382/mo | -25.0% | $17,449/mo | −$9,915/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 unitsJan 7, 2025 – Jan 7, 2025
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
No building permits are recorded for this parcel since 2016.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel (APN) · Retrieved Oct 31, 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.
| Report year | Project / record | Type | Entitled | Permitted | Completed | Deed-restricted |
|---|---|---|---|---|---|---|
| 2025 | New ADU(BD2505-0041) | ADU · Renter | — | 1 (Jan 7, 2025) | — | — |
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: project (parcel) · Retrieved Oct 26, 2026 · From Larkspur'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 31, 2026
0.19 acres
Assessor's classification for assessment purposes. This is not zoning.
250 HARVARD DR; 250 HARVARD DR A
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Oct 31, 2026
Search by parcel number 020-103-08. Assessed value is not market value.
Search by parcel number 020-103-08 (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.