305 Percheron Ct

Danville 94506 · APN 206-780-004-1 · Unincorporated Contra Costa

Property brief (PDF)Timeline ↓Calculator ↓Official records ↓

We don't have building permits for Unincorporated Contra Costa, so permit history and nearby activity are incomplete here. Building permits cover Richmond only, and end in April 2025, when the city replaced its permit system. New housing in every city comes from the state's Housing Element reports. Parcel, assessor, and record links still apply.

For saleLast soldEst. price

What's changing nearby

Since — within ½ mile: 2 homes completed, 1 permitted.

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.

No permit activity recorded within ½ mile.

Explore projects on the map →Explore sales & prices →

Estimated price, listing status & sales records

Benchmark valuation & transaction history

Estimated PriceArea benchmark

$2,131,000

Benchmark range: $1,811,000 – $2,451,000

Listing StatusOff Market

Not currently listed for sale

Compare nearby sales & prices on map →

Last Sold & Tax Roll

No deed price in open GIS feed

Verify on Property tax bill

How this estimated price is calculated (Area ZHVI + ACS + Permit Benchmark)

Model monthly ownership cost ↓

1. Area home value baseline: ZIP 94506 Zillow Home Value Index ($1,982,682, September 2026); $1,982,682
2. Parcel & lot adjustment (1.07×): Single-family lot (15,313 sq ft, +7.5% lot-size adjustment vs 6,000 sq ft standard lot); +$148,613
3. Documented permitted improvements: No recent value-adding ADU, addition, or remodel permits recorded on this parcel; +$0

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.

What could be built here

A screen, not a determination

ADU or junior ADU

Can't tell

Zoned P-1 (planned development): ADUs are allowed if the zone allows a home, which depends on the approved plan.

What we couldn't check (4)

Setbacks, height and size limits in the local ADU ordinance
Utility and sewer capacity, fire access
Historic district or landmark status: we have no historic layer for this area yet.
Locally adopted fire hazard maps, which can be broader than the State's.

SB 9: two homes on the lot

Can't tell

Zoned P-1 (planned development): we can't tell whether it counts as a single-family zone for SB 9. Area Wide Planned Unit: depends on the approved plan.

What we couldn't check (6)

Whether a tenant lived there in the last 3 years, or the building was withdrawn from rent under the Ellis Act
Rent-controlled or deed-restricted affordable housing on the lot
Wetlands, habitat, farmland, hazardous waste sites and conservation easements
Local SB 9 standards (size, setbacks, parking)
Historic district or landmark status: we have no historic layer for this area yet.
Locally adopted fire hazard maps, which can be broader than the State's.

SB 9: split into two lots

Can't tell

Zoned P-1 (planned development): we can't tell whether it counts as a single-family zone for SB 9. Area Wide Planned Unit: depends on the approved plan.

What we couldn't check (6)

Owner-occupancy: the applicant must sign an affidavit to live in one of the homes for 3 years
Whether the lot was created by an earlier SB 9 split, or the owner split an adjacent lot
Whether a tenant lived there in the last 3 years, or the building was withdrawn from rent under the Ellis Act
Wetlands, habitat, farmland, hazardous waste sites and conservation easements
Historic district or landmark status: we have no historic layer for this area yet.
Locally adopted fire hazard maps, which can be broader than the State's.

Mapped hazards on this lot

Fire hazard severity zone: Moderate Fire Hazard Severity Zone (Local Responsibility Area), all of the lot · State map of Mar 24, 2025; takes effect when the city or county adopts it
FEMA flood zone: Zone X: minimal flood hazardFIRM panel 06013C0467F, effective June 16, 2009. Official flood map
Earthquake fault zone: Not in an Alquist-Priolo Earthquake Fault Zone

Built nearby: within ¼ mile since October 2023

We don't have building permits for Unincorporated Contra Costa, so we can't show what has been permitted nearby.

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 Contra Costa's planning department before relying on it.

Sources: Contra Costa County Department of Conservation and Development, Zoning (unincorporated Contra Costa) (retrieved Oct 26, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the State Responsibility Area (effective 2024-04-01) (retrieved Oct 26, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the Local Responsibility Area (map dated 2025-03-24) (retrieved Oct 26, 2026) · FEMA, National Flood Hazard Layer — flood hazard zones (retrieved Oct 26, 2026) · FEMA, National Flood Hazard Layer — FIRM panels (retrieved Oct 26, 2026) · California Geological Survey, Alquist-Priolo Earthquake Fault Zones (retrieved Oct 26, 2026) · Zoning classes: our classification of P-1 as planned development, checked against the zone description on Oct 24, 2026

Property & area intelligence timeline

44 events · 12 slow/stalled projects

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.

Slow-moving or stalled projects (12)

Active projects spending 12+ months pre-issuance, 24+ months under construction, or 6+ months without new records

StalledPerriera RSFD (5,847 sf Replacement Single Family Detached - Replacing a 2,610 sf 1981/1981 SFD)Entitled
0.3 mi SW
In "Entitled" for 8.3 yr (since Jul 16, 2018), with no new permit record in 8.3 yr. · 1 unit
StalledNew homeEntitled
0.16 mi NE
In "Entitled" for 7.1 yr (since Oct 9, 2019), with no new permit record in 7.1 yr. · 1 unit
StalledNew homeIssued
160 ft S
Permit issued and active for 6.4 yr (first record Jun 1, 2020), with no completion or new permit record in 6.4 yr. · 1 unit
StalledNew homeIssued
170 ft S
Permit issued and active for 6.4 yr (first record Jun 1, 2020), with no completion or new permit record in 6.4 yr. · 1 unit
StalledNew homeIssued
160 ft S
Permit issued and active for 6.4 yr (first record Jun 1, 2020), with no completion or new permit record in 6.4 yr. · 1 unit
StalledNew homeIssued
350 ft SW
Permit issued and active for 6.4 yr (first record Jun 1, 2020), with no completion or new permit record in 6.4 yr. · 1 unit

20261 event

September 2026Market trend
ZIP 94506
ZIP 94506 typical home value: $1,982,682 (−1.2% year-over-year)
Latest published Zillow Home Value Index (ZHVI) update
Changed from $2,006,332 in September 2025 to $1,982,682 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94506 (not a parcel appraisal)

20252 events

September 2025Market trend
ZIP 94506
ZIP 94506 typical home value: $2,006,332 (−4.7% year-over-year)
Annual ZIP 94506 home-value index checkpoint
Changed from $2,106,125 in September 2024 to $2,006,332 in September 2025.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94506 (not a parcel appraisal)
Jan 16, 2025Nearby project · Issued
0.32 mi E
New home — Issued
1 unit
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)

20244 events

Dec 11, 2024Nearby project · Finaled / completed
0.35 mi W
New home — Finaled / completed
1 unit
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)
Dec 6, 2024Nearby project · Finaled / completed
0.35 mi W
New home — Finaled / completed
1 unit
Records span Mar 23, 2023 to Dec 6, 2024 (0 permits).
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)
September 2024Market trend
ZIP 94506
ZIP 94506 typical home value: $2,106,125 (+3.6% year-over-year)
Annual ZIP 94506 home-value index checkpoint
Changed from $2,033,216 in September 2023 to $2,106,125 in September 2024.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94506 (not a parcel appraisal)
Mar 28, 2024Nearby project · Issued
170 ft S
New home — Issued
1 unit
⏱ Slow turnaround:Permit issued and active for 2.6 yr (first record Mar 28, 2024), with no completion or new permit record in 2.6 yr.
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)

20233 events

September 2023Market trend
ZIP 94506
ZIP 94506 typical home value: $2,033,216 (−4.3% year-over-year)
Annual ZIP 94506 home-value index checkpoint
Changed from $2,123,508 in September 2022 to $2,033,216 in September 2023.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94506 (not a parcel appraisal)
Aug 16, 2023Nearby project · Issued
0.43 mi W
New home — Issued
1 unit
⏱ Slow turnaround:Permit issued and active for 3.2 yr (first record Aug 16, 2023), with no completion or new permit record in 3.2 yr.
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)
May 15, 2023Nearby project · Issued
0.39 mi W
New home — Issued
1 unit
⏱ Slow turnaround:Permit issued and active for 3.5 yr (first record May 15, 2023), with no completion or new permit record in 3.5 yr.
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)

20225 events

Nov 8, 2022Nearby project · Issued
0.16 mi NE
New home — Issued
1 unit
⏱ Slow turnaround:Permit issued and active for 4 yr (first record Nov 8, 2022), with no completion or new permit record in 4 yr.
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)
Nov 8, 2022Nearby project · Finaled / completed
0.16 mi NE
New home — Finaled / completed
1 unit
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)
Nov 8, 2022Nearby project · Entitled
0.16 mi NE
New home — Entitled
1 unit
⏱ Slow turnaround:In "Entitled" for 4 yr (since Nov 8, 2022), with no new permit record in 4 yr.
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)
September 2022Market trend
ZIP 94506
ZIP 94506 typical home value: $2,123,508 (+16.6% year-over-year)
Annual ZIP 94506 home-value index checkpoint
Changed from $1,820,425 in September 2021 to $2,123,508 in September 2022.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94506 (not a parcel appraisal)
May 12, 2022Housing completed
On this parcel
1 housing unit completed (BIR21-004693)
Reported in 2022 Housing Element Annual Progress Report
SFD · Owner
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: parcel

Showing 15 of 44 timeline events

Recorded sales & deed transfers: California county recorders do not publish open bulk deed-transfer feeds without owner-PII restrictions, so individual sale deeds are not redistributed here. For official assessment roll and recorded transfer history in Unincorporated Contra Costa, inspect Property tax bill ↗.

Development graph & closer investigation

6 investigation leads

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 Contra Costa development graph →

Developments deserving closer investigation (6)

On this parcel & within ½ mile

New homeIssuedNo new record in 6.4 yr
160 ft S
Active in "Issued" for 6.4 yr (first record Jun 1, 2020) with no new permit activity recorded in 6.4 yr.
New homeIssuedNo new record in 6.4 yr
160 ft S
Active in "Issued" for 6.4 yr (first record Jun 1, 2020) with no new permit activity recorded in 6.4 yr.
New homeIssuedNo new record in 2.6 yr
170 ft S
Active in "Issued" for 2.6 yr (first record Mar 28, 2024) with no new permit activity recorded in 2.6 yr.
New homeIssuedNo new record in 6.4 yr
170 ft S
Active in "Issued" for 6.4 yr (first record Jun 1, 2020) with no new permit activity recorded in 6.4 yr.
New homeIssuedNo new record in 6.4 yr
350 ft SW
Active in "Issued" for 6.4 yr (first record Jun 1, 2020) with no new permit activity recorded in 6.4 yr.
New homeIssuedNo new record in 6.4 yr
450 ft SW
Active in "Issued" for 6.4 yr (first record Jun 1, 2020) with no new permit activity recorded in 6.4 yr.

Ownership & rental scenario calculator

Prop 13 tax estimate & area benchmarks

Area rent & home-value benchmarks (kept separate from your assumptions)

Click any benchmark to pre-fill the calculator

HUD Small Area Fair Market Rent · ZIP 94506

HUD FY 2026 · 40th-percentile gross rent

Census ACS 5-year median gross rent (all bedroom counts combined):

ZIP 94506$3,500+

Area home-value benchmarks (not an appraisal)

ZIP & neighborhood medians

Zillow ZHVI · ZIP 94506(as of September 2026)Data provided by Zillow · typical mid-tier home value in ZIP

$1,982,682

ACS Median Home Value · ZIP 94506Census ACS 2020–2024 owner-occupied self-reported median

$1,934,000±$99,300

1. Purchase, financing & Prop 13 tax reassessment

Purchase price ($)Down payment (%)$426,000Interest rate (%)Loan termClosing costs (%)$42,600

Prop 13 post-purchase property tax estimate

$2,132/mo ($25,584/yr · 1.20%)

Under 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 ($21,300/yr) + local voter-approved bond debt ($3,834/yr) + fixed direct levies/Mello-Roos ($450/yr).

Voter bond rate (%)$3,834/yrDirect levies / Mello-Roos ($/yr)Check Property tax bill ↗

2. Your rent & operating assumptions

Monthly gross rent ($)Your assumptionVacancy allowance (%)−$188/moManagement (%)$285/moMaintenance (%)$188/moCapEx reserve (%)$188/moInsurance ($/mo)$3,300/yrHOA dues ($/mo)Owner utilities ($/mo)

Mapped hazard zone insurance context on this parcel:

Parcel intersects a mapped Moderate Fire Hazard Severity Zone (Local Responsibility Area) (local responsibility area). Properties in High or Very High fire hazard zones may require California FAIR Plan + difference-in-conditions (DIC) coverage; verify actual insurability and quotes early.

3. Scenario results (based on your assumptions)

Net monthly cash flow: −$10,275
Cash-on-cash return: -26.3%
Cap rate (Year 1 NOI): 0.28%
DSCR (NOI / debt): 0.05x
Break-even gross rent: $17,025/mo
Break-even vacancy: 0% (negative at full occ.)

Monthly cash-flow breakdown (Effective gross $3,563 − Operating $3,067 − Debt $10,770)

Gross scheduled rent$3,750

Vacancy allowance (5%)−$188

Effective gross income$3,563

Prop 13 property tax (1.20%)−$2,132

Property insurance−$275

Management (8%), maintenance (5%) & CapEx (5%)−$660

Net Operating Income (NOI)+$496

Mortgage principal & interest (1,704,000 loan)−$10,770

Net monthly cash flow−$10,275

4. Sensitivity & rent-stabilization ceiling (Unincorporated Contra Costa)

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	$3,450/mo	−$10,706/mo	-27.4%	$18,394/mo	−$10,755/mo
Base (your inputs)	Your entered assumptions, 3.0%/yr rent growth	$3,750/mo	−$10,275/mo	-26.3%	$17,025/mo	−$10,112/mo
Optimistic (cap-limited)	+6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr)	$3,975/mo	−$10,028/mo	-25.7%	$16,630/mo	−$9,622/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.

Common statutory exemption signals under AB 1482

Housing issued a certificate of occupancy within the last 15 years (rolling exemption under AB 1482).
Separately alienable single-family homes or condominiums not owned by a corporation, REIT, or LLC with a corporate member (when required statutory notice is in the lease).
Owner-occupied duplexes where the owner occupied one unit from the start of the tenancy.

Development projects on this parcel

New home
Finaled / completed1 unitsJun 24, 2021 – Jun 24, 2021

We group related permits and State housing reports into projects. That grouping is our inference, not an official record.

Permit history on this parcel

0 records

No building permits are recorded for this parcel since 2016.

Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) · Geography: parcel (APN) · Retrieved Oct 26, 2026 · Richmond's permits come from its eTRAKiT system, retired in 2025. Statuses are as of April 2025, and later permits are not published.

Housing activity reported to the State

Report year	Project / record	Type	Entitled	Permitted	Completed	Deed-restricted
2022	—(BIR21-004693)	SFD · Owner	—	1 (Jun 24, 2021)	1 (May 12, 2022)	—
2021	—(BIR21-004693)	SFD · Owner	—	1 (Jun 24, 2021)	—	—

Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: project (parcel) · Retrieved Oct 26, 2026 · From Unincorporated Contra Costa's Housing Element Annual Progress Reports. A project can appear in several report years as it moves from entitlement to permit to completion.

Zoning & planning

Zoning: P-1: Planned Unit (Unincorporated Contra Costa)

Source: Contra Costa County Department of Conservation and Development, Zoning (unincorporated Contra Costa) · Geography: zoning district polygon at parcel point · Retrieved Oct 26, 2026

Parcel facts

Lot size: 15,313 sq ft
Tax rate area: 66412
Assessor land use: Single Family detached with major common area such as pool, tennis, clubhouse, or other amenities, Cluster Homes
Addresses on parcel: 1

Source: Contra Costa County Assessor / Department of Information Technology, Assessment Parcels · Geography: parcel · Retrieved Oct 26, 2026

Official records

CCMAP
County map with assessor parcel maps and zoning. Search parcel 206-780-004.
Property tax bill
Search by parcel number 206-780-004 (Contra Costa County Treasurer-Tax Collector). Assessed value is not market value.
FEMA Flood Map Service Center
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.

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

$3,450/mo

−$10,706/mo

-27.4%

$18,394/mo

−$10,755/mo

Base (your inputs)

Your entered assumptions, 3.0%/yr rent growth

$3,750/mo

−$10,275/mo

-26.3%

$17,025/mo

−$10,112/mo

Optimistic (cap-limited)

+6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr)

$3,975/mo

−$10,028/mo

-25.7%

$16,630/mo

−$9,622/mo

Report year

Project / record

Type

Entitled

Permitted

Completed

Deed-restricted

2022

—(BIR21-004693)

SFD · Owner

—

1 (Jun 24, 2021)

1 (May 12, 2022)

—

2021

—(BIR21-004693)

SFD · Owner

—

1 (Jun 24, 2021)

—