Black Diamond, WA 98010 - Home Prices, Rental Trends, Listings & Demographics | Prop:Metrics

Black Diamond, WA—98010

Real Estate Data & Market Trends

Key Metrics at a Glance

Median Home Value

$783,000

0.2% YoY Growth

Household Income

$149,000

39.7% YoY Growth

Days on Market

5.0% Longer YoY

Home Price Forecast

0.0%

Median Rent

$3,400

2.5% YoY Growth

1-Bed Rent

$2,130

N/A

2-Bed Rent

$1,900

17.0% YoY Growth

3-Bed Rent

$3,350

18.0% YoY Growth

Home Price Trends — Black Diamond, WA

As of Dec '25, the median home price in Black Diamond, WA is $783,000, with a year-over-year change of -0.2%. This indicates that home prices in Black Diamond, WA are flat. According to Zillow, the 1-year price projection is 0.0%, suggesting a relatively flat housing market in the next year.

Cost per Home Type

Home Type	Median Home Value	YoY % Change
All Homes	$783,000	-0.2%
Single Family	$785,000	-0.8%
Condos	N/A	N/A

Cost per Home Size

Home Size	Median Home Value	YoY % Change
1 Bed

Rental Trends — Black Diamond, WA

As of July '25, Rentcast reports the average rent in Black Diamond, WA is $3,280, with a year-over-year rent change of 2.5%. Per bedroom, the median rent as of July '25 in Black Diamond, WA is 1-bedrooms: $2,130, 2-bedrooms: $1,950, 3-bedrooms: $3,350, 4-bedrooms: $3,490. The most common rental property sizes in Black Diamond, WA are 3-bedroom and 2-bedroom, accounting for 36.2% and 28.9% of the rental stock.

Type	Median Rent	Average Rent
Average Rent	$3,400	$3,280
Studio Rent	N/A	N/A
1 Bed Rent	$2,130	$2,130
2 Bed Rent	$1,900	$1,950
3 Bed Rent	$3,350	$3,350
4 Bed Rent	$3,520	$3,490

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% of Rental Stock

1 Bedroom

20.3%

2 Bedrooms

28.9%

3 Bedrooms

36.2%

4 Bedrooms

14.6%

Property Listings — Black Diamond, WA

As of Dec '25, Realtor.com reports that the median days on market for a home in Black Diamond, WA is 87. This is a decrease of -11.0% from last year, suggesting that homes are sitting on the market shorter than last year. The percentage of listed homes with a reduced price is 11.0%, representing a small inventory and little supply pressure on home prices.

Metric	Zip Code Average	Year over Year % Change
Median Listing Price	$686,000	-5.0%
Listing Count	64	4.0%
Listings as % of Homes	0.8%	4.0%
Days on Market	84	5.0%

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Demographics — Black Diamond, WA

As of the latest ACS Survey released in 2023, Black Diamond, WA has a population of 6,350, which has increased by 15.8% over the past 5 years. Black Diamond, WA is a moderately popular place for families, as children make up 23.9% of the population. The area has a highly educated workforce, with 55.5% of adult residents holding a bachelor’s degree or higher. There are some residents working remotely, with 22.2% reporting working from home.

Metric	Latest Census	YoY % Change
Population	6,350	15.8%
% Under 18	23.9%	7.7%
% Seniors	11.8%	-6.3%
% WFH	22.2%	164.3%
% w/ College Degree	55.5%	41.2%

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As of the latest ACS Survey released in 2023, Black Diamond, WA is a predominantly white area, with 74.4% of the population identifying as white. The white population has shrunk by 13.0% in the last 5 years. The second most common race or ethnicity in Black Diamond, WA is asian, making up 10.2% of the population. Foreign-born residents account for 14.2% of the population in Black Diamond, WA, and this percentage has increased by 57.8% as of the ACS Survey 5 years prior, suggesting more immigrants are calling the area home.

Race and Ethnicity

Metric	Latest Census	5-Year % Change
% White	74.4%	-13.0%
% Black	0.3%	-66.7%
% Hispanic	9.0%	1.1%
% Asian	10.2%	325.0%
% Foreign Born	14.2%	57.8%

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Mortgage and Risk — Black Diamond, WA

According to HUD data as of 2023, there were 345 mortgage originations in Black Diamond, WA, of which 90.0% of loans were conventional mortgages. The average loan-to-value was 51.0%, with 15.0% above 90% LTV (elevated). This implies medium mortgage risk in Black Diamond, WA. Investor activity is low, as 1.0% of loans were by investors. 3.0% of loans were cash-out refinances, suggesting few homeowners are tapping equity.

Mortgages

Metric	Zip Code Average
Total Loan Originations	345
% Conventional Loans	90.0%
% Government Loans	10.0%
% Investor Loans	1.0%
% Second Loans	0.0%
% Cash Out Refinance	3.0%

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Rentals and Section 8 — Black Diamond, WA

As of 2024, the percent of homes in Black Diamond, WA under the Section 8 program is 0.7%. This is considered low, suggesting that the neighborhood is sparsely composed of Section 8 homes. Section 8 opportunity is good when HUD pays more than market rent. In Black Diamond, WA, all tracked home sizes have HUD payment amounts above market rent, suggesting strong Section 8 opportunity across the board.

Section 8 Market Size

Total Units under HUD	1
Total Units Section 8	1
% Rentals under Section 8	0.7%
% Occupied Section 8	N/A

Section 8 Opportunity

Home Size	HUD Premium	Market Rent	Max HUD Rent
1 Bedroom	$220	$2,130	$2,350
2 Bedroom	$840	$1,900	$2,740
3 Bedroom	$260	$3,350	$3,610
4 Bedroom	$690	$3,520	$4,210

Black Diamond, WA—98010

Key Metrics at a Glance

Home Price Trends — Black Diamond, WA

Cost per Home Type

Cost per Home Size

% of Housing Stock

Rental Trends — Black Diamond, WA

% of Rental Stock

Property Listings — Black Diamond, WA

Demographics — Black Diamond, WA

Race and Ethnicity

Mortgage and Risk — Black Diamond, WA

Mortgages

Rentals and Section 8 — Black Diamond, WA

Section 8 Market Size

Section 8 Opportunity

Affordability — Black Diamond, WA

Home Price to Income Ratio

Black Diamond, WA — ZIP Code Boundary Map

Nearby ZIP Codes

Ravensdale, WA

Maple Valley, WA

Covington, WA

Wynaco, WA

Buckley, WA

Frequently Asked Questions

Metric	Zip Code Average
Home Price to Income Ratio	4.8
Median Home Price	$783,000
Median Household Income	$149,000

Black Diamond, WA—98010

Key Metrics at a Glance

Home Price Trends — Black Diamond, WA

Cost per Home Type

Cost per Home Size

% of Housing Stock

Rental Trends — Black Diamond, WA

% of Rental Stock

Property Listings — Black Diamond, WA

Demographics — Black Diamond, WA

Race and Ethnicity

Mortgage and Risk — Black Diamond, WA

Mortgages

Rentals and Section 8 — Black Diamond, WA

Section 8 Market Size

Section 8 Opportunity

Affordability — Black Diamond, WA

Home Price to Income Ratio

Black Diamond, WA — ZIP Code Boundary Map

Nearby ZIP Codes

Ravensdale, WA

Maple Valley, WA

Covington, WA

Wynaco, WA

Buckley, WA

Frequently Asked Questions

What is the average home price in Black Diamond, WA 98010?

How have home prices in Black Diamond, WA 98010 changed over the past year?

What is the home price projection for Black Diamond, WA 98010?

What are the demographics of Black Diamond, WA 98010?

How long does it take homes to sell in Black Diamond, WA 98010?

What is the average rent price in Black Diamond, WA 98010?