Woodacre 94973 · Woodacre · APN 172-151-40 · Unincorporated Marin
Zoned R1-B3-SGV in Unincorporated Marin with likely ADU & SB 9 infill eligibility and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,173,000 ($1,032,000–$1,314,000).
Zoned R1-B3-SGV supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 17,598 sq ft lot.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
On-parcel permit history is indexed through Aug 19, 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)
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)
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 proposed or in review.
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.
100 permits within ½ mile since November 2024
$1,173,000
Benchmark range: $1,032,000 – $1,314,000
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)
New garage / accessory structure (175960): Issued after 2 yr (4.4× the 164d median) — slower than 90% of new garage / accessory structure permits in Unincorporated Marin (median 164d, 90th pct 485d, n=356).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
Closest lead: Demolition at 0 Sylvan Way (0.25 mi W, 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.
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 R1-B3-SGV 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 14.6 yr (first record Mar 27, 2012), with no completion or new permit record in 12.7 yr. · 1 unit · $318,000 declared valuation
Permit issued and active for 13.5 yr (first record May 6, 2013), with no completion or new permit record in 12.6 yr. · $73,612 declared valuation
Permit issued and active for 7.3 yr (first record Jul 11, 2019), with no completion or new permit record in 7.2 yr. · 1 unit · $225,000 declared valuation
In "Applied" for 6.3 yr (since Jul 28, 2020), with no new permit record in 6.3 yr. · 1 unit · $35,000 declared valuation
Permit issued and active for 4.8 yr (first record Jan 21, 2022), with no completion or new permit record in 4.7 yr. · $31,000 declared valuation
Permit issued and active for 3.5 yr (first record May 15, 2023), with no completion or new permit record in 3.5 yr. · 1 unit · $8,000 declared valuation
Nearby windows / doors / siding (74 Carson Rd): First appeared in published agency feed
Record B48966 · 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 $1,065,244 in September 2025 to $1,116,587 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94973 (not a parcel appraisal)
Remodel / interior alteration permit application filed (94460)
Current status: Applied
Bathroom Remodel. Remove Dropped Cieling. Relocate Pocketdoor, Install New Vanity, Toilet, Bathtub/Shower, Lighting And Finishes. B46101 Req Structural Rev · Declared valuation: $23,000
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Roof replacement permit application filed (B46808)
Current status: Issued
ReRoofing · Declared valuation: $19,800 · Contractor: Apollo Building And Roofing Group Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Roof replacement permit issued (B46808)
Recorded status: Issued
ReRoofing · Declared valuation: $19,800 · Contractor: Apollo Building And Roofing Group Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Other permit application filed (B46101)
Current status: Issued
Declared valuation: $18,000 · Contractor: Green Bay Remodeling Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Other permit issued (B46101)
Recorded status: Issued
Declared valuation: $18,000 · Contractor: Green Bay Remodeling Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Annual ZIP 94973 home-value index checkpoint
Changed from $1,061,933 in September 2024 to $1,065,244 in September 2025.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94973 (not a parcel appraisal)
10 Holly Ln · 1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Annual ZIP 94973 home-value index checkpoint
Changed from $1,063,265 in September 2023 to $1,061,933 in September 2024.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94973 (not a parcel appraisal)
0 Sylvan Way
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
New garage / accessory structure permit issued (175960)
Recorded status: Issued
Replace Exterior Stairs & Railings In Front & Back Of House, (N) Drainage; 8' Arch Over Gates (Garage/Storage Addn Deleted) · Declared valuation: $8,500 · Contractor: Owner/Builder
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
HVAC / heat pump permit application filed (B36202)
Current status: Issued
Adding heat pump to existing central air system. Only replacing the outdoor unit and existing duct work. — Replace Ductwork, Replace Mechanical Appliance · Declared valuation: $11,686 · Contractor: Bellows Plumbing Heating & Air Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
HVAC / heat pump permit issued (B36202)
Recorded status: Issued
Adding heat pump to existing central air system. Only replacing the outdoor unit and existing duct work. — Replace Ductwork, Replace Mechanical Appliance · Declared valuation: $11,686 · Contractor: Bellows Plumbing Heating & Air Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Annual ZIP 94973 home-value index checkpoint
Changed from $1,129,016 in September 2022 to $1,063,265 in September 2023.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94973 (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 →Issued after 2 yr (4.4× the 164d median) — slower than 90% of new garage / accessory structure permits in Unincorporated Marin (median 164d, 90th pct 485d, n=356).
In "Applied" for 2.6 yr (since Apr 22, 2024), exceeding the 55d median and 261d 90th percentile for demolition permits in Unincorporated Marin (n=130).
In "Applied" for 6.3 yr (since Jul 28, 2020), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
Active in "Issued" for 3.5 yr (first record May 15, 2023) with no new permit activity recorded in 3.5 yr.
Active in "Issued" for 7.3 yr (first record Jul 11, 2019) with no new permit activity recorded in 7.2 yr.
Active in "Issued" for 4.8 yr (first record Jan 21, 2022) with no new permit activity recorded in 4.7 yr.
| Builder / contractor | Primary specialty | Here / ½ mi | ½ mi valuation | Citywide 24m trend |
|---|---|---|---|---|
| Owner Builder | New garage / accessory structure | 1 on parcel9 in ½ mi | $622,876 | 226 vs 240 prior−6% |
| Apollo Building And Roofing Group | Roof replacement | 1 on parcel1 in ½ mi | $19,800 | 0 vs 0 prior |
| Green Bay Remodeling | Other | 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 94973
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 ($11,750/yr) + local voter-approved bond debt ($1,763/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.
−$60,464/yr
Cash needed: $258,500
NOI: $10,834/yr
P&I: $5,941/mo
For $0/mo net cash flow
At $3,025/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 | $2,783/mo | −$5,386/mo | -25.0% | $10,301/mo | −$5,385/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,025/mo | −$5,039/mo | -23.4% | $9,535/mo | −$4,866/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr) | $3,207/mo | −$4,839/mo | -22.5% | $9,313/mo | −$4,471/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.
Bathroom Remodel. Remove Dropped Cieling. Relocate Pocketdoor, Install New Vanity, Toilet, Bathtub/Shower, Lighting And Finishes. B46101 Req Structural Rev
ReRoofing
Replace Exterior Stairs & Railings In Front & Back Of House, (N) Drainage; 8' Arch Over Gates (Garage/Storage Addn Deleted)
Adding heat pump to existing central air system. Only replacing the outdoor unit and existing duct work. — Replace Ductwork, Replace Mechanical Appliance
replace approximately 40ft. Of 2” abs and galvanized drain piping due to age and condition with new abs drain pipe with proper slope and supports every 4ft. In addition approximately 30ft. Of 4” cast iron trunk line will be cut out and replaced with new abs pipe and fittings. All water lines in crawl space will be cut out and replaced with a new water distribution system. Divine electric and plumbing will be connecting to the existing drops. All hot piping will be insulated for efficiency. A dedicated return line will be ran from furthest fixture back to the location of the new water heater and a grundfos recirculating pump will be installed with all the proper valves and purge station. At the water service riser a 3/4” pressure reducing valve will be installed and pressure set to 65psi as recommended by the technician. Existing water heater will be removed and disposed of for installation of new customer supplied electric water heater. The new unit will be installed inside of crawl space within 5ft. of access door to avoid exposure of freeze and still be accessible for servicing. The work performed will meet all the necessary code requirements for a city or county inspection. — Replace Plumbing Fixtures(s)
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
0.40 acres
Assessor's classification for assessment purposes. This is not zoning.
170 REDWOOD DR
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Nov 13, 2026
Search by parcel number 172-151-40. Assessed value is not market value.
Search by parcel number 172-151-40 (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.
| $18,000 |
| 5 vs 5 prior |
| Bellows Plumbing Heating And Air | HVAC / heat pump | 1 on parcel1 in ½ mi | $11,686 | 0 vs 0 prior |
| Divine Electric | Plumbing / water heater / sewer | 1 on parcel1 in ½ mi | $4,563 | 2 vs 1 prior |
| Camello Recent nearby: 5000 Sir Francis Drake Blvd (Apr 8, 2014) | New single-family home | 13 in ½ mi | $5,103,957 | 0 vs 0 prior |
| Owner Recent nearby: 230 Redwood Dr (Mar 10, 2025) | New garage / accessory structure | 9 in ½ mi | $451,020 | 25 vs 15 prior+67% |
| C Overaa And Recent nearby: 5000 Sir Francis Drake Blvd (Aug 5, 2025) | New garage / accessory structure | 1 in ½ mi | $870,000 | 0 vs 0 prior |
| Ralph D Bruinsslot Recent nearby: 2 Osprey Trl (Feb 18, 2014) | New single-family home | 1 in ½ mi | $318,000 | 0 vs 0 prior |
| Crafted Earth Recent nearby: 63 Madrone Ave (Aug 17, 2021) | Remodel / interior alteration | 1 in ½ mi | $300,000 | 0 vs 3 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 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) |
| Roof replacementOn this parcel | 3,663 | 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.