Kentfield 94904 · Kentfield · APN 074-181-21 · Unincorporated Marin
Zoned RSP-1 in Unincorporated Marin with likely ADU & SB 9 infill eligibility and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $2,469,000 ($2,173,000–$2,765,000).
Zoned RSP-1 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 36,111 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
On-parcel permit history is indexed through Oct 22, 2026, 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)
103 substantial renovation & housing permits over 24 months (40.9 per 1,000 parcels vs. 16.3 citywide baseline) (#7 of 22 neighborhoods).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (Kentfield)
Automated synthesis of indexed municipal, county, state, and federal public records — informational context only, not a formal appraisal, survey, or legal/tax determination.
$2,469,000
Benchmark range: $2,173,000 – $2,765,000
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 Apr 1, 2024)
Plumbing / water heater / sewer (86827): Pending in review for 6 yr — slower than 90% of plumbing / water heater / sewer permits in Unincorporated Marin (median 0d, 90th pct 0d, n=2,211).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
Closest lead: Accessory dwelling unit at 432 Woodland Rd (0.43 mi SW, 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)
Since November 2024 within ½ mile: 15 permitted, 2 proposed or in review; 3 demolitions.
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.
291 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 14, 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 14, 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 RSP-1 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 7.4 yr (first record Jun 18, 2019), with no completion or new permit record in 7.4 yr. · 1 unit · $44,000 declared valuation
Permit issued and active for 6.9 yr (first record Dec 12, 2019), with no completion or new permit record in 6.9 yr. · $4,700 declared valuation
Permit issued and active for 7.7 yr (first record Mar 14, 2019), with no completion or new permit record in 5.5 yr. · 1 unit · $1,217,500 declared valuation
Permit issued and active for 5.8 yr (first record Jan 11, 2021), with no completion or new permit record in 5.5 yr. · $30,000 declared valuation
Permit issued and active for 5.8 yr (first record Feb 2, 2021), with no completion or new permit record in 5.4 yr. · $125,000 declared valuation
In "Entitled" for 5.4 yr (since Jun 24, 2021), with no new permit record in 5.4 yr. · 1 unit
Nearby other (300 Goodhill Rd): First appeared in published agency feed
Record B49020 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Other permit application filed (B48870)
Current status: Issued
Replace Mechanical Appliance · Declared valuation: $36,000 · Contractor: Reyes Heating And Air
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Other permit issued (B48870)
Recorded status: Issued
Replace Mechanical Appliance · Declared valuation: $36,000 · Contractor: Reyes Heating And Air
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
8 Laurel Way · 1 unit · $22,000,000 valuation
Records span Mar 17, 2026 to Oct 15, 2026 (2 permits).
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 $2,157,052 in September 2025 to $2,308,409 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94904 (not a parcel appraisal)
122 Woodland Rd · $75,000 valuation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
440 Woodland Rd · 1 unit · $450,000 valuation
Records span Aug 21, 2025 to Jul 22, 2026 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
121 Woodland Rd A D U · 1 unit · $135,000 valuation
Records span Feb 5, 2026 to Jul 20, 2026 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
1 Orchard Way · 1 unit · $10,047,573 valuation
Records span Dec 19, 2025 to Jul 15, 2026 (2 permits).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
60 Redwood Dr · 1 unit · $204,500 valuation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
332 Kent Ave · 1 unit · $1,000,000 valuation
Records span Nov 10, 2025 to Jun 8, 2026 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
6 Cedar Ave · 1 unit · $500,000 valuation
Records span Aug 21, 2025 to Apr 21, 2026 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
34 Acorn Way A D U 34 A · 1 unit · $125,000 valuation
Records span Sep 12, 2025 to Apr 21, 2026 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
40 Rock Rd (Adu 40a) · 1 unit · $40,420 valuation
Records span Jul 3, 2025 to Mar 25, 2026 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
55 Redwood Dr A D U 55 A · 1 unit · $895,000 valuation
Records span Jun 12, 2025 to Jan 8, 2026 (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 Unincorporated Marin development graph →In "Applied" for 2.6 yr (since Apr 12, 2024), 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, $1,250,000 declared valuation across 1 permit).
Pending in review for 6 yr — slower than 90% of plumbing / water heater / sewer permits in Unincorporated Marin (median 0d, 90th pct 0d, n=2,211).
Active in "Issued" for 2.2 yr (first record Aug 27, 2024) with no new permit activity recorded in 18 mo. High-impact scale (1 housing unit, $936,400 declared valuation across 1 permit).
Active in "Issued" for 20 mo (first record Feb 28, 2025) with no new permit activity recorded in 16 mo. High-impact scale (1 housing unit, $750,000 declared valuation across 1 permit).
Active in "Issued" for 7.7 yr (first record Mar 14, 2019) with no new permit activity recorded in 5.5 yr. High-impact scale (1 housing unit, $1,217,500 declared valuation across 2 permits).
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).
Substantial improvements (additions, interior remodels, ADUs, commercial TI, and new builds) across 2,518 parcels
−33.9% YoY
City baseline: 16.3 / 1k
103 in trailing 24m
Includes 29 ADUs
| Builder / contractor | Primary specialty | Here / ½ mi | ½ mi valuation | Citywide 24m trend |
|---|---|---|---|---|
| Ernest Ongaro And Sons | Accessory dwelling unit (new or conversion) | 1 on parcel2 in ½ mi | $18,600 | 0 vs 0 prior |
| Sands Construction | Remodel / interior alteration | 1 on parcel1 in ½ mi | $80,000 | 0 vs 0 prior |
| Reyes Heating And Air | Other | 1 on parcel1 in ½ mi | $36,000 |
| Permit category | Sample (n) | 25th pct | Median (50th) | 75th pct | 90th pct | Recent 24m median |
|---|---|---|---|---|---|---|
| New single-family home | 121 | 166d | 253d | 456d | 686d | 210d(vs 276d 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 94904
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 ($24,700/yr) + local voter-approved bond debt ($3,705/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.
−$151,613/yr
Cash needed: $543,400
NOI: -$1,737/yr
P&I: $12,490/mo
For $0/mo net cash flow
At $3,275/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 | $3,013/mo | −$13,011/mo | -28.7% | $21,174/mo | −$13,102/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,275/mo | −$12,634/mo | -27.9% | $19,599/mo | −$12,540/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr) | $3,472/mo | −$12,418/mo | -27.4% | $19,143/mo | −$12,112/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.
Replace Mechanical Appliance
Replace failed 75 gal water heater with new 75 gal water heater — Replace Plumbing Fixtures(s)
Transfer Switch Install for sub panel @ main with 30 Amp Inlet. — New Circuits / Outlets
Generator
Rmdl Master Suite - Express
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel (APN) · Retrieved Nov 14, 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 14, 2026
0.83 acres
Assessor's classification for assessment purposes. This is not zoning.
107 DIABLO DR
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Nov 14, 2026
Search by parcel number 074-181-21. Assessed value is not market value.
Search by parcel number 074-181-21 (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.
| Divine Electric | Electrical / panel | 1 on parcel1 in ½ mi | $1,355 | 2 vs 1 prior |
| Owner Builder Recent nearby: 440 Woodland Rd (Jul 22, 2026) | Addition (adds square footage) | 41 in ½ mi | $8,288,400 | 226 vs 240 prior−6% |
| Owner Recent nearby: 63 Hermit Ln (May 19, 2023) | Remodel / interior alteration | 19 in ½ mi | $652,500 | 25 vs 15 prior+67% |
| Swett Construction Recent nearby: 233 Woodland Rd (Jun 12, 2026) | New garage / accessory structure | 9 in ½ mi | $4,721,000 | 4 vs 2 prior |
| Hendrickson Pools Recent nearby: 16 Madrone Way (Jul 14, 2022) | Pool / spa | 9 in ½ mi | $975,100 | 3 vs 4 prior |
| Fairweather And Associates Recent nearby: 226 Woodland Rd (Aka 228) (Dec 2, 2021) | Demolition | 8 in ½ mi | $3,191,000 | 0 vs 3 prior |
| Adamas Builders Recent nearby: 121 Woodland Rd (Jul 20, 2026) | Accessory dwelling unit (new or conversion) | 6 in ½ mi | $2,534,000 | 3 vs 3 prior |
| 316 |
| 103d |
| 160d |
| 249d |
| 440d |
| 159d(vs 166d 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) |
| Electrical / panelOn this parcel | 3,020 | 0d | 0d | 0d | 2d | 0d |
| Plumbing / water heater / sewerOn this parcel | 2,211 | 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.