3585 Brook St

Lafayette 94549 · APN 241-190-002-6 · Lafayette

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

We don't have building permits for Lafayette, 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.

What's changing nearby

Since — within ½ mile: 3 homes completed, 7 permitted, 92 proposed or in review (11 of them deed-restricted affordable).

12 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

$2,331,000

Benchmark range: $1,981,000 – $2,681,000

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 94549 Zillow Home Value Index ($1,910,595, September 2026); $1,910,595
2. Parcel & lot adjustment (1.22×): Duplex / 2-unit residential property (1.22× single-family baseline); +$420,331
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

We don't have a zoning map for Lafayette.

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

We don't have a zoning map for Lafayette.

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

We don't have a zoning map for Lafayette.

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: High 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 hazard, about 95% of the lotZone X: minimal flood hazard, about 5% of the lotFIRM panel 06013C0288F, effective June 16, 2009. Official flood map
Earthquake fault zone: Not in an Alquist-Priolo Earthquake Fault Zone

Built nearby: within ¼ mile since November 2023

We don't have building permits for Lafayette, 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 Lafayette'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)

Property & area intelligence timeline

68 events · 39 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 (39)

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

StalledQuix ADUEntitled
On this parcel
In "Entitled" for 3.2 yr (since Aug 8, 2023), with no new permit record in 3.2 yr. · 1 unit
StalledNew homeIssued
0.31 mi NW
Permit issued and active for 8.4 yr (first record Jun 20, 2018), with no completion or new permit record in 8.4 yr. · 1 unit
StalledNew homeIssued
0.31 mi NW
Permit issued and active for 8.4 yr (first record Jun 20, 2018), with no completion or new permit record in 8.4 yr. · 1 unit
StalledNew homeIssued
0.31 mi NW
Permit issued and active for 8.4 yr (first record Jun 20, 2018), with no completion or new permit record in 8.4 yr. · 1 unit
StalledNew homeIssued
0.31 mi NW
Permit issued and active for 8.4 yr (first record Jun 20, 2018), with no completion or new permit record in 8.4 yr. · 1 unit
StalledNew homeIssued
0.31 mi NW
Permit issued and active for 8.4 yr (first record Jun 20, 2018), with no completion or new permit record in 8.4 yr. · 1 unit

20262 events

September 2026Market trend
ZIP 94549
ZIP 94549 typical home value: $1,910,595 (+3.4% year-over-year)
Latest published Zillow Home Value Index (ZHVI) update
Changed from $1,847,007 in September 2025 to $1,910,595 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94549 (not a parcel appraisal)
Feb 2, 2026Nearby project · Finaled / completed
0.32 mi SE
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)

202511 events

Dec 3, 2025Nearby project · Issued
0.46 mi E
Nazari ADU06-24 — Issued
2 units
Records span Jun 17, 2024 to Dec 3, 2025 (0 permits).
⏱ Slow turnaround:Permit issued and active for 2.4 yr (first record Jun 17, 2024), with no completion or new permit record in 11 mo.
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)
September 2025Market trend
ZIP 94549
ZIP 94549 typical home value: $1,847,007 (−2.5% year-over-year)
Annual ZIP 94549 home-value index checkpoint
Changed from $1,895,331 in September 2024 to $1,847,007 in September 2025.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94549 (not a parcel appraisal)
Aug 18, 2025Nearby project · Entitled
0.46 mi E
Nazari ADU24-25 — Entitled
1 unit
⏱ Slow turnaround:In "Entitled" for 15 mo (since Aug 18, 2025), with no new permit record in 15 mo.
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)
Aug 1, 2025Nearby project · Issued
0.46 mi W
Shi ADU29-25 — Issued
1 unit
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)
Jun 9, 2025Nearby project · Entitled
0.39 mi N
SAJ Oak Hill DR18-24 — Entitled
90 units · 11 affordable
⏱ Slow turnaround:In "Entitled" for 17 mo (since Jun 9, 2025), with no new permit record in 17 mo.
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)
May 2, 2025Nearby project · Issued
210 ft NE
Koduru ADU18-25 — Issued
1 unit
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)
Apr 28, 2025Nearby project · Issued
0.23 mi SE
Storhmeyer ADU14-25 — Issued
1 unit
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)
Apr 25, 2025HCD permit milestone
On this parcel
Building permit reported to State HCD for 1 housing unit (Quix ADU20-23)
Reported in 2025 Housing Element Annual Progress Report
ADU · Renter
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: parcel
Jan 28, 2025Nearby project · Issued
0.38 mi E
King SFR — Issued
1 unit
Records span Oct 3, 2024 to Jan 28, 2025 (0 permits).
⏱ Slow turnaround:Permit issued and active for 2.1 yr (first record Oct 3, 2024), with no completion or new permit record in 21 mo.
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)
Jan 13, 2025Nearby project · Issued
0.23 mi E
Chen ADU02-25 — Issued
1 unit
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)
Jan 8, 2025Housing completed
On this parcel
1 housing unit completed (Quix ADU20-23)
Reported in 2025 Housing Element Annual Progress Report
ADU · Renter
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: parcel

20242 events

Dec 16, 2024Nearby project · Finaled / completed
0.21 mi SE
Varner JADU39-21 — 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 13, 2024Nearby project · Entitled
0.47 mi NE
Meredith ADU47-24 — Entitled
1 unit
⏱ Slow turnaround:In "Entitled" for 23 mo (since Dec 13, 2024), with no new permit record in 23 mo.
Source: City of Richmond Planning & Building, PermitTrak (eTRAKiT permits, 1992 to April 2025) & HCD APR (grouped project within ½ mile)

Showing 15 of 68 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 Lafayette, 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 Lafayette development graph →

Developments deserving closer investigation (6)

On this parcel & within ½ mile

Quix ADUEntitledNo new record in 3.2 yr
On this parcel
Active in "Entitled" for 3.2 yr (first record Aug 8, 2023) with no new permit activity recorded in 3.2 yr.
950 Hough DR07-20IssuedNo new record in 2.7 yr20 units
0.16 mi NE
Active in "Issued" for 2.7 yr (first record Mar 1, 2024) with no new permit activity recorded in 2.7 yr. High-impact scale (20 housing units, 3 deed-restricted affordable across 0 permits).
Lenox Lafayette CircleEntitledNo new record in 8.2 yr12 units
0.19 mi N
Active in "Entitled" for 8.2 yr (first record Sep 4, 2018) with no new permit activity recorded in 8.2 yr. High-impact scale (12 housing units, 2 deed-restricted affordable across 0 permits).
SAJ Oak Hill DR18-24EntitledNo new record in 17 mo90 units
0.39 mi N
Active in "Entitled" for 17 mo (first record Jun 9, 2025) with no new permit activity recorded in 17 mo. High-impact scale (90 housing units, 11 deed-restricted affordable across 0 permits).
SAJ Oak Hill DR06-22EntitledNo new record in 2.5 yr53 units
0.39 mi N
Active in "Entitled" for 2.5 yr (first record May 13, 2024) with no new permit activity recorded in 2.5 yr. High-impact scale (53 housing units, 6 deed-restricted affordable across 0 permits).
Lennar HomesIssuedNo new record in 7 yr66 units
0.41 mi NW
Active in "Issued" for 7 yr (first record Nov 6, 2019) with no new permit activity recorded in 7 yr. High-impact scale (66 housing units, 10 deed-restricted affordable across 0 permits).

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 94549

HUD FY 2026 · 40th-percentile gross rent

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

ZIP 94549$2,981±$354

Area home-value benchmarks (not an appraisal)

ZIP & neighborhood medians

Zillow ZHVI · ZIP 94549(as of September 2026)Data provided by Zillow · typical mid-tier home value in ZIP

$1,910,595

ACS Median Home Value · ZIP 94549Census ACS 2020–2024 owner-occupied self-reported median

$1,956,000±$72,600

1. Purchase, financing & Prop 13 tax reassessment

Purchase price ($)Down payment (%)$466,000Interest rate (%)Loan termClosing costs (%)$46,600

Prop 13 post-purchase property tax estimate

$2,329/mo ($27,944/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 ($23,300/yr) + local voter-approved bond debt ($4,194/yr) + fixed direct levies/Mello-Roos ($450/yr).

Voter bond rate (%)$4,194/yrDirect levies / Mello-Roos ($/yr)Check Property tax bill ↗

2. Your rent & operating assumptions

Monthly gross rent ($)Your assumptionVacancy allowance (%)−$196/moManagement (%)$298/moMaintenance (%)$196/moCapEx reserve (%)$196/moInsurance ($/mo)$3,300/yrHOA dues ($/mo)Owner utilities ($/mo)

Mapped hazard zone insurance context on this parcel:

Parcel intersects a mapped High 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: −$11,347
Cash-on-cash return: -26.6%
Cap rate (Year 1 NOI): 0.22%
DSCR (NOI / debt): 0.04x
Break-even gross rent: $18,586/mo
Break-even vacancy: 0% (negative at full occ.)

Monthly cash-flow breakdown (Effective gross $3,729 − Operating $3,294 − Debt $11,782)

Gross scheduled rent$3,925

Vacancy allowance (5%)−$196

Effective gross income$3,729

Prop 13 property tax (1.20%)−$2,329

Property insurance−$275

Management (8%), maintenance (5%) & CapEx (5%)−$691

Net Operating Income (NOI)+$434

Mortgage principal & interest (1,864,000 loan)−$11,782

Net monthly cash flow−$11,347

4. Sensitivity & rent-stabilization ceiling (Lafayette)

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	$3,611/mo	−$11,798/mo	-27.6%	$20,080/mo	−$11,857/mo
Base (your inputs)	Your entered assumptions, 3.0%/yr rent growth	$3,925/mo	−$11,347/mo	-26.6%	$18,586/mo	−$11,184/mo
Optimistic (cap-limited)	+6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr)	$4,161/mo	−$11,088/mo	-26.0%	$18,154/mo	−$10,671/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

Quix ADU20-23
Finaled / completed1 unitsApr 25, 2024 – Jan 8, 2025
Quix ADU
Entitled1 unitsAug 8, 2023 – Aug 8, 2023

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
2025	Quix ADU20-23(BIAD23-011722)	ADU · Renter	—	1 (Apr 25, 2025)	1 (Jan 8, 2025)	—
2024	Quix ADU20-23(BIAD23-011722)	ADU · Renter	—	1 (Apr 25, 2024)	—	—
2023	Quix ADU(ADU20-23)	ADU · Renter	1 (Aug 8, 2023)	—	—	—

Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: project (parcel) · Retrieved Oct 26, 2026 · From Lafayette'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: No zoning map published for Lafayette

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: 10,362 sq ft
Tax rate area: 14047
Assessor land use: Apartments, 5-12 units
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 241-190-002.
Property tax bill
Search by parcel number 241-190-002 (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

$3,611/mo

−$11,798/mo

-27.6%

$20,080/mo

−$11,857/mo

Base (your inputs)

Your entered assumptions, 3.0%/yr rent growth

$3,925/mo

−$11,347/mo

-26.6%

$18,586/mo

−$11,184/mo

Optimistic (cap-limited)

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

$4,161/mo

−$11,088/mo

-26.0%

$18,154/mo

−$10,671/mo

Report year

Project / record

Type

Entitled

Permitted

Completed

Deed-restricted

2025

Quix ADU20-23(BIAD23-011722)

ADU · Renter

—

1 (Apr 25, 2025)

1 (Jan 8, 2025)

—

2024

Quix ADU20-23(BIAD23-011722)

ADU · Renter

—

1 (Apr 25, 2024)

—

2023

Quix ADU(ADU20-23)

ADU · Renter

1 (Aug 8, 2023)

—