Novato 94945 · Green Point · APN 143-190-88 · Unincorporated Marin
Zoned ARP-2 in Unincorporated Marin and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,420,000 ($1,250,000–$1,590,000).
Public building records show issued construction/renovation work on this parcel (2 total permits, latest Apr 29, 2025).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
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)
Automated synthesis of indexed municipal, county, state, and federal public records — informational context only, not a formal appraisal, survey, or legal/tax determination.
Since November 2024 within ½ mile: 1 permitted.
1 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.
55 permits within ½ mile since November 2024
$1,420,000
Benchmark range: $1,250,000 – $1,590,000
Accessory dwelling unit at 200 Atherton Ave (adu 200a): Active in "Issued" for 2.8 yr (first record Feb 8, 2024) with no new permit activity recorded in 18 mo.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
Closest lead: New home at 50 Lockton Ln (0.13 mi NE, issued). Inspect timeline history before assuming near-term completion.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · HCD APR (½-mile radius)
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 ARP-2 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.
Permit issued and active for 2.8 yr (first record Feb 8, 2024), with no completion or new permit record in 18 mo. · 1 unit · $200,000 declared valuation
Permit issued and active for 8.7 yr (first record Feb 21, 2018), with no completion or new permit record in 8.5 yr. · 1 unit · $1,090,000 declared valuation
In "Applied" for 5.8 yr (since Feb 10, 2021), with no new permit record in 5.6 yr. · 1 unit · $95,000 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
In "Applied" for 2.4 yr (since Jul 2, 2024), with no new permit record in 2.4 yr. · 1 unit
Nearby plumbing / water heater / sewer (155 Crest Rd): First appeared in published agency feed
Record B49058 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby roof replacement (146 Crest Rd): First appeared in published agency feed
Record B48995 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby other (204 Crest Rd): First appeared in published agency feed
Record B48961 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby plumbing / water heater / sewer (155 Crest Rd): First appeared in published agency feed
Record B48949 · 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 $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)
Building permit reported to State HCD for 1 housing unit (91898)
Reported in 2025 Housing Element Annual Progress Report
ADU · Renter
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: parcel
Accessory dwelling unit (new or conversion) permit issued (179133)
Recorded status: Issued
(N) A D U In (E) Four Car Garage; (N) Windows & Doors · Declared valuation: $200,000 · 1 housing unit · Contractor: Hildebrand Renovation Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
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)
8 Glen Ln · 1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Accessory dwelling unit (new or conversion) permit application filed (179133)
Current status: Issued
(N) A D U In (E) Four Car Garage; (N) Windows & Doors · Declared valuation: $200,000 · Contractor: Hildebrand Renovation 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)
HVAC / heat pump permit application filed (B35068)
Current status: Issued
(3) Trane furnaces and (3) Trane AC systems (1) Navien 240a tankless on demand hot water heater — Replace Plumbing Fixtures(s); Replace Mechanical Appliance · Declared valuation: $80,000 · Contractor: Peter Levi Plumbing Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
HVAC / heat pump permit issued (B35068)
Recorded status: Issued
(3) Trane furnaces and (3) Trane AC systems (1) Navien 240a tankless on demand hot water heater — Replace Plumbing Fixtures(s); Replace Mechanical Appliance · Declared valuation: $80,000 · Contractor: Peter Levi Plumbing Inc
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 →Active in "Issued" for 2.8 yr (first record Feb 8, 2024) with no new permit activity recorded in 18 mo.
Active in "Issued" for 8.7 yr (first record Feb 21, 2018) with no new permit activity recorded in 8.5 yr. High-impact scale (1 housing unit, $1,090,000 declared valuation across 1 permit).
In "Applied" for 5.8 yr (since Feb 10, 2021), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
Issued after 15 mo (2.2× the 204d median) — above the 75th percentile for accessory dwelling unit (new or conversion) permits in Unincorporated Marin (median 204d, 75th pct 331d, n=298).
In "Applied" for 2.4 yr (since Jul 2, 2024), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
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).
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 |
|---|---|---|---|---|
| Hildebrand Renovation | Accessory dwelling unit (new or conversion) | 1 on parcel1 in ½ mi | $200,000 | 0 vs 0 prior |
| Peter Levi Plumbing | HVAC / heat pump | 1 on parcel1 in ½ mi | $80,000 | 0 vs 0 prior |
| Owner Builder Recent nearby: 391 School Rd (Dec 26, 2024) | Remodel / interior alteration | 4 in ½ mi | $940,000 |
| 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) |
| Accessory dwelling unit (new or conversion)On this parcel | 298 | 120d | 204d | 331d | 549d | 214d(vs 181d 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 ($14,200/yr) + local voter-approved bond debt ($2,130/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.
−$78,380/yr
Cash needed: $312,400
NOI: $7,784/yr
P&I: $7,180/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 | −$6,876/mo | -26.4% | $12,358/mo | −$6,896/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,000/mo | −$6,532/mo | -25.1% | $11,439/mo | −$6,381/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 | −$6,334/mo | -24.3% | $11,173/mo | −$5,989/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 unitsFeb 8, 2024 – Apr 29, 2025
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
(N) A D U In (E) Four Car Garage; (N) Windows & Doors
(3) Trane furnaces and (3) Trane AC systems (1) Navien 240a tankless on demand hot water heater — Replace Plumbing Fixtures(s); Replace Mechanical Appliance
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.
| Report year | Project / record | Type | Entitled | Permitted | Completed | Deed-restricted |
|---|---|---|---|---|---|---|
| 2025 | —(91898) | ADU · Renter | — | 1 (Apr 29, 2025) | — | — |
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
6.09 acres
Assessor's classification for assessment purposes. This is not zoning.
200A ATHERTON AVE; 200 ATHERTON AVE
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Nov 13, 2026
Search by parcel number 143-190-88. Assessed value is not market value.
Search by parcel number 143-190-88 (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.
| 226 vs 240 prior−6% |
| Owner Recent nearby: 393 School Rd (Jul 20, 2021) | New garage / accessory structure | 3 in ½ mi | $306,000 | 25 vs 15 prior+67% |
| 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 |
| Rasmussen Dv And Son Recent nearby: 180 Crest Rd (Jan 11, 2017) | Remodel / interior alteration | 2 in ½ mi | $105,000 | 0 vs 0 prior |
| Valencia Landscaping Recent nearby: 50 Lockton Ln (May 17, 2018) | New single-family home | 1 in ½ mi | $1,090,000 | 0 vs 0 prior |
| Alliance Custom Builders Recent nearby: 19 Hampton Ln (Feb 10, 2022) | Remodel / interior alteration | 1 in ½ mi | $345,000 | 0 vs 2 prior |
| Jsl Contracting Recent nearby: 55 Atherton Oaks Dr (Oct 25, 2021) | Remodel / interior alteration | 1 in ½ mi | $250,000 | 0 vs 0 prior |
| Hendrickson Pools Recent nearby: 25 Woodview Ln (Nov 19, 2015) | Pool / spa | 1 in ½ mi | $200,000 | 3 vs 4 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) |
| 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.