Novato 94945 · Green Point · APN 143-350-47 · Unincorporated Marin
Zoned ARP-1.5 in Unincorporated Marin and mapped FEMA AE flood / CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,200,000 ($1,056,000–$1,344,000).
On-parcel permit history is indexed through Mar 28, 2024, 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)
Zone AE: 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.
Automated synthesis of indexed municipal, county, state, and federal public records — informational context only, not a formal appraisal, survey, or legal/tax determination.
35 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
$1,200,000
Benchmark range: $1,056,000 – $1,344,000
Source: CAL FIRE FHSZ (map Apr 1, 2024)
New commercial building at 450 Atherton Ave: Active in "Applied" for 7.3 yr (first record Jul 10, 2019) with no new permit activity recorded in 6.9 yr.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
Closest lead: Mixed-use development at 435 School Rd (0.28 mi E, 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)
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-1.5 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.
In "Applied" for 7.3 yr (since Jul 10, 2019), with no new permit record in 6.9 yr. · $250,000 declared valuation
Permit issued and active for 12 yr (first record Nov 18, 2014), with no completion or new permit record in 7.5 yr. · 1 unit · $700,000 declared valuation
In "Applied" for 5.6 yr (since Mar 26, 2021), with no new permit record in 4.9 yr. · 1 unit · $96,309 declared valuation
Permit issued and active for 4.4 yr (first record Jun 9, 2022), with no completion or new permit record in 4 yr. · 1 unit · $180,000 declared valuation
Latest published Zillow Home Value Index (ZHVI) update
Changed from $1,053,344 in September 2025 to $1,063,156 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94945 (not a parcel appraisal)
Annual ZIP 94945 home-value index checkpoint
Changed from $1,073,876 in September 2024 to $1,053,344 in September 2025.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94945 (not a parcel appraisal)
Annual ZIP 94945 home-value index checkpoint
Changed from $1,040,503 in September 2023 to $1,073,876 in September 2024.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94945 (not a parcel appraisal)
Plumbing / water heater / sewer permit application filed (B37490)
Current status: Issued
Replace 80 gallon water heater with identical unit in same location. — Replace Plumbing Fixtures(s) · Declared valuation: $19,000 · Contractor: Marin H20 Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Plumbing / water heater / sewer permit issued (B37490)
Recorded status: Issued
Replace 80 gallon water heater with identical unit in same location. — Replace Plumbing Fixtures(s) · Declared valuation: $19,000 · Contractor: Marin H20 Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Annual ZIP 94945 home-value index checkpoint
Changed from $1,070,658 in September 2022 to $1,040,503 in September 2023.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94945 (not a parcel appraisal)
120 Atherton Oaks Dr · 1 unit · $2,500,000 valuation
Records span Dec 30, 2022 to Sep 1, 2023 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Plumbing / water heater / sewer permit issued (173052)
Recorded status: Issued
Replace [E] Generator W [N] Same-Size Model At Novato Fire Station #62 · Declared valuation: $61,000 · Contractor: Fowler Electric Services Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Plumbing / water heater / sewer permit application filed (173052)
Current status: Issued
Replace [E] Generator W [N] Same-Size Model At Novato Fire Station #62 · Declared valuation: $61,000 · Contractor: Fowler Electric Services Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Electrical / panel permit issued (172791)
Recorded status: Issued
Replace (E) Slide Gate W/ Automated Cantilever Gate · Declared valuation: $74,135 · Contractor: Jones Garage Door Company Incorporated
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
11 H Ln (Aka 15) · 1 unit · $180,000 valuation
Records span Jun 9, 2022 to Nov 8, 2022 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Annual ZIP 94945 home-value index checkpoint
Changed from $988,993 in September 2021 to $1,070,658 in September 2022.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94945 (not a parcel appraisal)
Electrical / panel permit application filed (172791)
Current status: Issued
Replace (E) Slide Gate W/ Automated Cantilever Gate · Declared valuation: $74,135 · Contractor: Jones Garage Door Company Incorporated
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
435 School Rd · 1 unit · $96,309 valuation
Records span Mar 26, 2021 to Dec 27, 2021 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Annual ZIP 94945 home-value index checkpoint
Changed from $816,588 in September 2020 to $988,993 in September 2021.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94945 (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 "Applied" for 7.3 yr (first record Jul 10, 2019) with no new permit activity recorded in 6.9 yr.
Issued after 5 mo — slower than 90% of electrical / panel permits in Unincorporated Marin (median 0d, 90th pct 2d, n=3,019).
In "Applied" for 5.6 yr (since Mar 26, 2021), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
Active in "Issued" for 12 yr (first record Nov 18, 2014) with no new permit activity recorded in 7.5 yr.
Active in "Issued" for 4.4 yr (first record Jun 9, 2022) with no new permit activity recorded in 4 yr.
High-impact scale (1 housing unit, $2,500,000 declared valuation across 1 permit).
Substantial improvements (additions, interior remodels, ADUs, commercial TI, and new builds) across 411 parcels
Small prior baseline
City baseline: 16.4 / 1k
2 in trailing 24m
Includes 1 ADUs
| Builder / contractor | Primary specialty | Here / ½ mi | ½ mi valuation | Citywide 24m trend |
|---|---|---|---|---|
| Owner | New garage / accessory structure | 1 on parcel6 in ½ mi | $1,068,000 | 25 vs 15 prior+67% |
| J And A Plumbing And Rooter Service | Plumbing / water heater / sewer | 2 on parcel2 in ½ mi | $24,701 | 0 vs 0 prior |
| Jones Garage Door | Electrical / panel | 1 on parcel1 in ½ mi |
| 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 94945
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 ($12,000/yr) + local voter-approved bond debt ($1,800/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.
−$62,500/yr
Cash needed: $264,000
NOI: $10,314/yr
P&I: $6,068/mo
For $0/mo net cash flow
At $3,000/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 | $2,760/mo | −$5,553/mo | -25.2% | $10,511/mo | −$5,555/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,000/mo | −$5,208/mo | -23.7% | $9,729/mo | −$5,040/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr) | $3,180/mo | −$5,011/mo | -22.8% | $9,503/mo | −$4,649/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.
AppliedJul 10, 2019 – Dec 30, 2019
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
Replace 80 gallon water heater with identical unit in same location. — Replace Plumbing Fixtures(s)
Replace [E] Generator W [N] Same-Size Model At Novato Fire Station #62
Replace (E) Slide Gate W/ Automated Cantilever Gate
Gas line for future addition — New Plumbing Fixture(s)
Const. Non-Bldg Fire Trng Tower.
partial sewer line repair — Replace Plumbing Fixtures(s)
Classeoom, Modular
Demolish Training Tower And Classrooms
Install new lighting in the kitchen and dining room. Update outlets for appliances. — 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
2.95 acres
Assessor's classification for assessment purposes. This is not zoning.
450 ATHERTON AVE
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Nov 13, 2026
Search by parcel number 143-350-47. Assessed value is not market value.
Search by parcel number 143-350-47 (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.
| $74,135 |
| 0 vs 0 prior |
| Fowler Electric Services | Plumbing / water heater / sewer | 1 on parcel1 in ½ mi | $61,000 | 0 vs 0 prior |
| Marin H20 | Plumbing / water heater / sewer | 1 on parcel1 in ½ mi | $19,000 | 0 vs 0 prior |
| Rake Electric | Electrical / panel | 1 on parcel1 in ½ mi | $10,000 | 0 vs 0 prior |
| Owner Builder Recent nearby: 391 School Rd (Dec 26, 2024) | Remodel / interior alteration | 10 in ½ mi | $1,957,000 | 226 vs 240 prior−6% |
| Pacific Pools Recent nearby: 11 Alpine Rd (Dec 8, 2020) | Pool / spa | 3 in ½ mi | $237,181 | 0 vs 0 prior |
| Ian A Neilson Construction Services Recent nearby: 120 Atherton Oaks Dr (Sep 1, 2023) | New garage / accessory structure | 2 in ½ mi | $2,600,000 | 0 vs 0 prior |
| Tropicana Pools Of California Recent nearby: 145 Atherton Oaks Dr (Jul 16, 2024) | Pool / spa | 2 in ½ mi | $185,000 | 0 vs 0 prior |
| Accessory dwelling unit (new or conversion) | 298 | 120d | 204d | 331d | 549d | 214d(vs 181d prior) |
| DemolitionOn this parcel | 130 | 11d | 55d | 106d | 261d | 80d(vs 56d 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) |
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.