Novato 94945 · North Novato · APN 143-670-05 · Unincorporated Marin
Zoned Undesignated in Unincorporated Marin and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,152,000 ($1,014,000–$1,290,000).
On-parcel permit history is indexed through Jul 1, 2014, 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)
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 proposed or in review; 1 demolition.
3 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.
48 permits within ½ mile since November 2024
$1,152,000
Benchmark range: $1,014,000 – $1,290,000
New home at 689 Atherton Ave: Active in "Issued" for 16.5 yr (first record May 21, 2010) with no new permit activity recorded in 12.4 yr.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
Closest lead: New home at 675 Atherton Ave (0.19 mi N, 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)
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 Undesignated as other, 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 16.5 yr (first record May 21, 2010), with no completion or new permit record in 12.4 yr. · 1 unit · $444,675 declared valuation
In "Applied" for 9.9 yr (since Dec 20, 2016), with no new permit record in 9.9 yr. · 1 unit · $702,260 declared valuation
Permit issued and active for 8.6 yr (first record Mar 20, 2018), with no completion or new permit record in 8.1 yr. · 1 unit · $150,000 declared valuation
In "Applied" for 5.5 yr (since May 18, 2021), with no new permit record in 5.1 yr. · 1 unit · $1,500,000 declared valuation
Permit issued and active for 4.8 yr (first record Jan 12, 2022), with no completion or new permit record in 4.5 yr. · 1 unit · $245,000 declared valuation
Permit issued and active for 3.7 yr (first record Mar 3, 2023), with no completion or new permit record in 3.2 yr. · 1 unit · $60,000 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)
673 Atherton Ave · 1 unit · $1,000,000 valuation
Records span Aug 19, 2025 to Aug 13, 2026 (2 permits).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
50 Archibald Ln · $26,000 valuation
Records span Jun 16, 2025 to Jun 16, 2026 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
161 H Ln · 1 unit · $450,000 valuation
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 $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)
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)
33 Beattie Ave (Aka 30) · 1 unit · $60,000 valuation
Records span Mar 3, 2023 to Sep 14, 2023 (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)
162 Churchill Ln (Aka 160) · 1 unit · $245,000 valuation
Records span Jan 12, 2022 to May 18, 2022 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
675 Atherton Ave · 1 unit · $1,500,000 valuation
Records span May 18, 2021 to Oct 11, 2021 (3 permits).
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)
537 Atherton Ave · 1 unit · $30,000 valuation
Records span Mar 7, 2018 to Nov 20, 2019 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
679 Atherton Ave · 1 unit · $225,000 valuation
Records span Nov 15, 2017 to Oct 30, 2019 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
60 Philip Ter · 1 unit · $270,040 valuation
Records span Jul 16, 2018 to May 5, 2019 (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 →Active in "Issued" for 16.5 yr (first record May 21, 2010) with no new permit activity recorded in 12.4 yr.
In "Applied" for 5.5 yr (since May 18, 2021), 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, $1,500,000 declared valuation across 3 permits).
Issued after 4.1 yr (9.2× the 164d median) — slower than 90% of new garage / accessory structure permits in Unincorporated Marin (median 164d, 90th pct 485d, n=356).
Issued after 4.1 yr (5.9× the 253d median) — slower than 90% of new single-family home permits in Unincorporated Marin (median 253d, 90th pct 686d, n=121).
In "Applied" for 9.9 yr (since Dec 20, 2016), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
Active in "Issued" for 8.6 yr (first record Mar 20, 2018) with no new permit activity recorded in 8.1 yr.
Substantial improvements (additions, interior remodels, ADUs, commercial TI, and new builds) across 732 parcels
Small prior baseline
City baseline: 16.4 / 1k
6 in trailing 24m
Includes 2 ADUs
| Builder / contractor | Primary specialty | Here / ½ mi | ½ mi valuation | Citywide 24m trend |
|---|---|---|---|---|
| Owner | New garage / accessory structure | 2 on parcel4 in ½ mi | $948,915 | 25 vs 15 prior+67% |
| Owner Builder Recent nearby: 673 Atherton Ave (Aug 13, 2026) | New garage / accessory structure | 16 in ½ mi | $2,364,210 | 226 vs 240 prior−6% |
| Rjdj Recent nearby: 130 Churchill Ln (Mar 10, 2021) |
| Permit category | Sample (n) | 25th pct | Median (50th) | 75th pct | 90th pct | Recent 24m median |
|---|---|---|---|---|---|---|
| New single-family homeOn this parcel | 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 |
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 ($11,500/yr) + local voter-approved bond debt ($1,725/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.
−$58,891/yr
Cash needed: $253,000
NOI: $10,889/yr
P&I: $5,815/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 | −$5,252/mo | -24.9% | $10,092/mo | −$5,250/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,000/mo | −$4,908/mo | -23.3% | $9,341/mo | −$4,736/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 | −$4,710/mo | -22.3% | $9,124/mo | −$4,344/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 unitsMay 21, 2010 – Jul 1, 2014
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
Garage - Imaged Under 143195 Hold Plans Until 07/15/2012 ***Extended To 7/1/18*** W/Sfd App
S F Dwelling ***Extended To 7/1/19*** Hold Plans Until 07/15/2012 Bc 10/16/15: Do Not Toss Plans! Design Review Forthcoming.
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
3.06 acres
Assessor's classification for assessment purposes. This is not zoning.
689 ATHERTON AVE
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Nov 13, 2026
Search by parcel number 143-670-05. Assessed value is not market value.
Search by parcel number 143-670-05 (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.
| Pool / spa |
| 4 in ½ mi |
| $243,800 |
| 1 vs 1 prior |
| Anello Painting And Construction Recent nearby: 160 Churchill Ln (May 18, 2022) | Accessory dwelling unit (new or conversion) | 2 in ½ mi | $250,000 | 0 vs 1 prior |
| Millsap Degnan And Associates Recent nearby: 110 Churchill Ln (Jun 11, 2015) | Remodel / interior alteration | 1 in ½ mi | $300,000 | 4 vs 1 prior |
| Frank R Unciano Contractor Recent nearby: 60 Philip Ter (Feb 5, 2019) | New single-family home | 1 in ½ mi | $270,040 | 0 vs 0 prior |
| Schalich Brothers Construction Recent nearby: 805 Atherton Ave (Dec 30, 2021) | Remodel / interior alteration | 1 in ½ mi | $250,000 | 7 vs 1 prior |
| Rempe Construction Recent nearby: 140 Churchill Ln (Jan 24, 2025) | Addition (adds square footage) | 1 in ½ mi | $200,000 | 4 vs 0 prior |
| Marin Home Remodeling Recent nearby: 35 Saddle Wood Dr (May 7, 2024) | Remodel / interior alteration | 1 in ½ mi | $150,000 | 2 vs 2 prior |
| 159d(vs 205d 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) |
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.