Contra Costa County, California · Wholesaling

Wholesaling Real Estate in Contra Costa County, California

If you want to break into real estate in Contra Costa County without a large bankroll, wholesaling is one of the most practical ways to start. Your job is to find a discounted property, put it under contract, and connect it with a cash buyer who wants the deal.

Assign contractsCash buyersProbate leadsPre-foreclosureAbsentee owners

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Contra Costa County, California areas and ZIP codes map for real estate investors
$751,750
Median listing price (down 5%)
3,469
Active listings in Contra Costa County
39 days
Average time on market
$2,995
Median rent (down 4.1%)

Market data: Realtor.com Contra Costa County housing market, October 2026. Zillow Home Value Index for Contra Costa County: $771,709 (down 1.1% from a year earlier), August 2026. View homes on Zillow.

Carolynn Castillo, ForeclosuresDaily.com customer

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Listed and sold 25 properties and personally bought and sold four fix-and-flip properties, all generated from probate leads.

Carolynn Castillo
Realtor & Broker · eXp Realty

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Local market snapshot

Why wholesale real estate in Contra Costa County?

Wholesaling needs little capital because you control a property with a contract and an earnest money deposit, not a mortgage. In addition, your buyer handles the repairs, so you never manage contractors, and many assignments close in weeks rather than months.

Contra Costa County is home to about 1.2 million residents as of the 2020 census, and its county seat is Martinez. Its ZIP codes span communities such as Black Hawk, Bethel Island, Clayton, and Concord, and motivated-seller situations such as inherited homes, tired rentals, and pre-foreclosures show up across all of them.

With a population of this size, Contra Costa County produces a steady flow of probate filings, divorces, and foreclosure notices every year. Investors who track these records and reach owners early tend to find the best off-market deals.

Contra Costa County wholesale real estate investors finding off-market deals
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Step-by-step

How does wholesaling real estate work in Contra Costa County?

Every wholesale deal follows the same path, from the first lead to the assignment fee:

Find a distressed property

Initially, use targeted lead generation to find owners with a reason to sell, such as heirs, tired landlords, or owners facing foreclosure.

Run the numbers

Next, estimate the after-repair value (ARV) from nearby sales, because your offer depends on it.

Sign a purchase contract

Then agree on a price that leaves room for your buyer’s profit as well as your assignment fee.

Find a cash buyer

After that, match the deal with a flipper, landlord, or other cash buyer from your list.

Assign the contract

In addition, transfer your rights under the contract to the buyer in exchange for your fee.

Collect your fee

Finally, the title company or closing attorney usually pays your assignment fee at closing.

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Targeted real estate lead generation

Motivated sellers who want to liquidate fast

For this reason, ForeclosuresDaily.com’s off-market real estate platform covers every major distress signal in Contra Costa County, cross-referenced with tax rolls and property appraiser records.

Probate LeadsExecutors who must sell before the estate can close.Get probate leads →Pre-Probate LeadsFamilies who may sell before a probate case is filed.See pre-probate leads →Inheritance LeadsHeirs who want to sell because they will not keep the home.View inheritance leads →Foreclosure LeadsOwners behind on payments who want to sell before auction.Explore foreclosure leads →Divorce LeadsCouples who must sell when they divide shared assets.Find divorce leads →Eviction LeadsTired landlords who want out because of problem tenants.Browse eviction leads →Code Violation LeadsOwners facing fines because of open violations and costly repairs.Check code violation leads →Tax DelinquencyOwners behind on property taxes who need cash soon.Target tax-delinquent owners →Absentee Owner LeadsOut-of-area owners, especially those far from the property.Reach absentee owners →Life Leads & FSBOOwners selling on their own rather than with an agent.Shop all lead products →
Anthony Coletti, ForeclosuresDaily.com customer

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Anthony Coletti
Real estate investor

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Find a deal

How do you calculate a wholesale offer in Contra Costa County?

Every offer starts with the ARV, which is what the home will be worth once it is fixed. For example, the 70% Rule says your buyer should pay no more than 70% of ARV minus repairs. Because your assignment fee comes out of that number, your contract price must be even lower.

For instance, here is the math using the Contra Costa County median listing price as the ARV, an 8% repair budget, and a typical assignment fee.

Wholesale offer example

ARV$751,750
70% of ARV − repairs ($60,000)$466,225
Your assignment fee− $23,000
Your contract price$443,225
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Zip codes

Contra Costa County ZIP codes to watch

Start your search in these Contra Costa County ZIP codes, and then expand as you learn which areas your buyers want. Next, choose a ZIP code from the menu to open its investing data.

Black HawkZIP 94506$2,100,000Negotiate

Black Hawk (94506) market snapshot

$2,100,000 ▼ 13.7%Median listing price
$715Price per sq ft
32 days ▼ 29.4%Days on market
$6,450 ▲ 13.7%Median rent
87 ▲ 32.9%Active listings
3.7%Gross rent yield

In addition, the Zillow Home Value Index is $1,994,728 (down 2% from a year earlier) as of August 2026.

ZIP 94506 is part of Danville, CA.

Investor note: Pull probate, pre-foreclosure, and absentee-owner leads for 94506 to find motivated sellers here.

Max offer when the ARV equals the median price$2,100,000 × 70% − $168,000 repairs = $1,302,000 max offer

Also see the full 94506 market report on Realtor.com →Then view 94506 homes on Zillow →

Bethel IslandZIP 94511$1,099,000Flip

Bethel Island (94511) market snapshot

$1,099,000 ▲ 10.1%Median listing price
$459Price per sq ft
78 days ▼ 36.3%Days on market
n/aMedian rent
57 ▼ 8.6%Active listings
n/aGross rent yield

In addition, the Zillow Home Value Index is $630,850 (down 1.1% from a year earlier) as of August 2026.

Bethel Island is an island in the Sacramento–San Joaquin River Delta of Contra Costa County, California, approximately 10 kilometres east of Antioch. The community of Bethel Island is governed as a Special Act District created by the California State legislature and named the Bethel Island Municipal Improvement District. It is a popular destination for recreation seekers, especially hunters, fishermen, boaters, and bird watchers.

Investor note: Water nearby: view and water-access homes often sell at a premium, so compare ARV carefully and check flood zones.

Max offer when the ARV equals the median price$1,099,000 × 70% − $88,000 repairs = $681,300 max offer

Also see the full 94511 market report on Realtor.com →Then view 94511 homes on Zillow →

ClaytonZIP 94517$1,149,000Negotiate

Clayton (94517) market snapshot

$1,149,000 ▲ 12.3%Median listing price
$497Price per sq ft
38 days ▲ 18.8%Days on market
n/aMedian rent
60 ▲ 39.6%Active listings
n/aGross rent yield

In addition, the Zillow Home Value Index is $1,033,575 (up 1% from a year earlier) as of August 2026.

Clayton is a city in Contra Costa County, California. Population: 11,585 (2020 census).

Investor note: Has its own local government, so check its code-violation, vacant-property, and rental-registration lists. Industrial history: older housing stock often needs updates, which suits fix-and-flip buyers.

Max offer when the ARV equals the median price$1,149,000 × 70% − $92,000 repairs = $712,300 max offer

Also see the full 94517 market report on Realtor.com →Then view 94517 homes on Zillow →

ConcordZIP 94521$754,450Negotiate

Concord (94521) market snapshot

$754,450 ▼ 3.7%Median listing price
$455Price per sq ft
37 days ▼ 7.9%Days on market
$3,447 ▲ 25.4%Median rent
106 ▲ 13.8%Active listings
5.5%Gross rent yield

In addition, the Zillow Home Value Index is $777,029 (up 0.2% from a year earlier) as of August 2026.

Concord is the most populous city in Contra Costa County, California. Founded in 1869 as Todos Santos by Don Salvio Pacheco II, a noted Californio ranchero, the name was later changed to Concord. The city is a major regional suburban East Bay center within the San Francisco Bay Area, and is 29 miles east of San Francisco. Population: 123,261.

Investor note: Commuter suburb: owner-occupant demand helps retail resales and quick assignments.

Max offer when the ARV equals the median price$754,450 × 70% − $60,000 repairs = $468,115 max offer

Also see the full 94521 market report on Realtor.com →Then view 94521 homes on Zillow →

DanvilleZIP 94526$1,846,800Flip

Danville (94526) market snapshot

$1,846,800 ▲ 2%Median listing price
$818Price per sq ft
31 days ▼ 17.9%Days on market
$4,447 ▼ 0.1%Median rent
98 ▼ 3.5%Active listings
2.9%Gross rent yield

In addition, the Zillow Home Value Index is $1,711,810 (up 0.7% from a year earlier) as of August 2026.

Danville is located in the San Ramon Valley in Contra Costa County, California. It is one of the incorporated municipalities in California that use "town" in their names instead of "city". The Iron Horse Regional Trail runs through Danville. It was first a railroad that has been converted to a 10-foot-wide path that consists of biking and hiking trails as well as controlled intersections. Population: 43,582 (2020 census).

Max offer when the ARV equals the median price$1,846,800 × 70% − $148,000 repairs = $1,144,760 max offer

Also see the full 94526 market report on Realtor.com →Then view 94526 homes on Zillow →

PachecoZIP 94553$764,000Wholesale

Pacheco (94553) market snapshot

$764,000 ▼ 2.2%Median listing price
$484Price per sq ft
36 days ▼ 15.6%Days on market
$3,000 ▼ 14.2%Median rent
124 ▼ 13%Active listings
4.7%Gross rent yield

In addition, the Zillow Home Value Index is $753,472 (down 1.7% from a year earlier) as of August 2026.

Pacheco is a census-designated place in Contra Costa County, California. It is bounded by Martinez to the north and west, Concord to the east, and Pleasant Hill to the south. Population: 4,183 (2020 census).

Investor note: Unincorporated area: permits, liens, and code enforcement are handled by the township or county, so pull records there.

Max offer when the ARV equals the median price$764,000 × 70% − $61,000 repairs = $473,800 max offer

Also see the full 94553 market report on Realtor.com →Then view 94553 homes on Zillow →

OrindaZIP 94563$1,899,000Negotiate

Orinda (94563) market snapshot

$1,899,000 ▼ 7.3%Median listing price
$742Price per sq ft
30 days ▼ 42.3%Days on market
$6,495 ▲ 10.6%Median rent
69 ▼ 20.9%Active listings
4.1%Gross rent yield

In addition, the Zillow Home Value Index is $1,930,356 (up 2% from a year earlier) as of August 2026.

Orinda is a city in Contra Costa County, California.

Max offer when the ARV equals the median price$1,899,000 × 70% − $152,000 repairs = $1,177,300 max offer

Also see the full 94563 market report on Realtor.com →Then view 94563 homes on Zillow →

Port CostaZIP 94569Wholesale

Port Costa (94569) market snapshot

In addition, the Zillow Home Value Index is $661,743 (up 1.3% from a year earlier) as of August 2026.

Port Costa is a small town and census-designated place in Contra Costa County, California, located in the East Bay region of the San Francisco Bay Area. Population: 190.

Investor note: Historic properties: check historic-district rules before planning exterior renovations.

Walnut CreekZIP 94596$680,000Negotiate

Walnut Creek (94596) market snapshot

$680,000 ▼ 19.1%Median listing price
$622Price per sq ft
39 days ▼ 7.1%Days on market
$2,700 ▲ 2.9%Median rent
54 ▼ 31.1%Active listings
4.8%Gross rent yield

In addition, the Zillow Home Value Index is $1,068,728 (up 1.9% from a year earlier) as of August 2026.

Walnut Creek is a city in Contra Costa County, California, located in the East Bay region of the San Francisco Bay Area, approximately 16 miles east of the city of Oakland and 25 miles east of San Francisco. The city shares its borders with Clayton, Lafayette, Alamo, Pleasant Hill and Concord. Population: 70,127.

Max offer when the ARV equals the median price$680,000 × 70% − $54,000 repairs = $422,000 max offer

Also see the full 94596 market report on Realtor.com →Then view 94596 homes on Zillow →

El SobranteZIP 94803$735,000Wholesale

El Sobrante (94803) market snapshot

$735,000 ▼ 1.5%Median listing price
$430Price per sq ft
31 days ▼ 14.6%Days on market
$3,025 ▼ 0.2%Median rent
64 ▲ 8.8%Active listings
4.9%Gross rent yield

In addition, the Zillow Home Value Index is $725,741 (down 1.4% from a year earlier) as of August 2026.

El Sobrante is a census-designated place in Contra Costa County, California. Population: 15,524 (2020 census).

Max offer when the ARV equals the median price$735,000 × 70% − $59,000 repairs = $455,500 max offer

Also see the full 94803 market report on Realtor.com →Then view 94803 homes on Zillow →

Choose a ZIP code from the menu to see its investing data, then compare markets. Market data: Realtor.com, October 2026, and Zillow Home Value Index, August 2026. Also, gross rent yield is 12 months of median rent divided by the median listing price; the max offer assumes repairs of 8% of the median price.

Antonio Stringfield, ForeclosuresDaily.com customer

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Antonio Stringfield
Probate investor · Los Angeles

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Cash buyers

How do you build your buyers list in Contra Costa County?

Build your buyers list before you sign your first contract. Your best buyers are cash buyers who can close quickly, such as flippers, landlords, and small builders.

  • First of all, attend local real estate investor meetups.
  • Also, review recent cash sales in county records to find active buyers.
  • Then connect with title companies, hard money lenders, and property managers.
  • Finally, ask every buyer for their buy box: areas, price range, and rehab level.
Contracts

What does assigning contracts mean in California?

Assigning contracts means transferring your rights as the buyer under a purchase agreement to another investor. Your contract should allow assignment, and your buyer typically pays your assignment fee at closing.

Wholesaling is legal in most states, but the rules differ. Some states require disclosures or a real estate license for certain activities, so review your contracts with a California real estate attorney before you start.

Nancy Wallace-Laab, ForeclosuresDaily.com customer

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Nancy Wallace-Laab
Investor · nearly 20 years

Nancy focuses on the best outcome for both the seller and the investor, drawing on nearly 20 years of real estate investing experience.

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In fact, since 2004, ForeclosuresDaily.com has helped investors, wholesalers, flippers, and agents reach motivated sellers first.

Not on the MLSHomes for sale privately, before any listing.
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Fresh leadsNew records added every day.
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More guides

More wholesaling guides in California

Compare nearby markets before you choose where to farm. For example, these local guides cover other California cities and counties:

El Dorado County · Los Angeles County · Orange County · Riverside County · Sacramento County · San Diego County · Solano County · Wholesale House Prices Fresno · Wholesale House Prices Long Beach · Wholesale House Prices Los Angeles

Also, see Wholesaling Real Estate for Profit for the profit math and guides in every state.

FAQ

Wholesaling questions for Contra Costa County

How do you wholesale real estate in Contra Costa County?

First of all, find a motivated seller through probate, pre-foreclosure, or absentee-owner leads. Then sign a contract at a discount, and finally assign it to a cash buyer for a fee.

Is wholesaling legal in California?

Wholesaling is legal in most states, but the rules vary. For example, some states require disclosures or a license for certain activities, so have a California real estate attorney review your contracts.

How much can you make wholesaling in Contra Costa County?

Assignment fees vary by deal. For instance, a fee of about 3% on a home priced near the Contra Costa County median of $751,750 would be roughly $23,000.

Which Contra Costa County ZIP codes have the lowest entry prices?

Among the ZIP codes in this guide, the lowest median listing prices are in 94596 (Walnut Creek) at $680,000, 94803 (El Sobrante) at $735,000, and 94521 (Concord) at $754,450, based on Realtor.com data from October 2026.

Where do Contra Costa County foreclosures come from?

Most start with missed mortgage payments, so pre-foreclosure filings appear months before an auction. As a result, investors who reach owners early can buy before the home is listed.

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