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Residential (General/Single)Residential
$939,164
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 91How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $12,500 on Sep 17, 1976

9518 BAY LN

CASTLE ROCK, CO 80108
0
Baths
2.23 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$939K
$859K low$1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$12,500 · Sep 17, 1976

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,433 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$29,200 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$29,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$29,150
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$429,341

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.50
24
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
52
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
72
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
30
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
75
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.3 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential (General/Single)
CountyDOUGLAS
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Rocky Heights Middle SchoolA+
Middle · Grades 6–8 · 2.4 mi
E
Buffalo Ridge Elementary SchoolA+
Elementary · Grades PK–5 · 2.5 mi
H
Rock Canyon High SchoolB
High · Grades 9–12 · 2.5 mi

District: Douglas County School District Re-1

Neighborhood · ZIP 80108These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.69
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.96
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.41

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.46%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.37,207
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.915 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$178,720
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$215,843
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.19 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.69%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

9518 Bay Ln measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth more than 78% of homes in Douglas County
  • Has a bigger lot than 96% of homes in Castle Rock 80108

What homes are worth in Castle Rock 80108

Each bar is how many homes fall in that price range. The marker is this home.

This home
$361K$3.1M

This home is worth more than 56% of homes in Castle Rock 80108.

How it measures up in Castle Rock 80108

The dot is this home. The mark in the middle is the typical home in Castle Rock 80108.

Estimated value$939,164
CheaperTypical $884,209Pricier

Pricier than 56% of homes nearby

Lot size2.23 ac
SmallerTypical 0.2 acBigger

Bigger than 96% of homes nearby

How 9518 Bay Ln ranks against every home in each area.
MeasureThis homeSurrey RidgeCastle Rock 80108Douglas County
Estimated valuepricier than$939,16432% of homes56% of homes78% of homes
Lot sizebigger than2.23 ac64% of homes96% of homes93% of homes

About 9518 Bay Ln

How much is 9518 Bay Ln, Castle Rock, CO worth?

The TopHap Estimate for 9518 Bay Ln, Castle Rock, CO is $939,164 as of Sep 24, 2026. The likely range is $858,924 to $1,019,404. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 9518 Bay Ln, Castle Rock, CO last sell?

9518 Bay Ln, Castle Rock, CO last sold on Sep 17, 1976 for $12,500, according to the county's recorded deed.

What schools serve 9518 Bay Ln, Castle Rock, CO?

9518 Bay Ln, Castle Rock, CO is assigned to Rocky Heights Middle School (middle), rated A+; Buffalo Ridge Elementary School (elementary), rated A+; Rock Canyon High School (high), rated B. All sit in Douglas County School District Re-1. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 9518 Bay Ln, Castle Rock, CO compare to other homes in Castle Rock 80108?

Among the 13,451 homes in Castle Rock 80108, it is worth more than 56% of them ($939,164 against a typical $884,209) and its lot is bigger than 96% of them (2.23 ac against a typical 0.2 ac). Measured against all of Douglas County, it is worth more than 78% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 9518 Bay Ln, Castle Rock, CO?

The 2024 property tax bill for 9518 Bay Ln, Castle Rock, CO was $2,433. The county assessed it at $29,200.

More homes on Bay Ln

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Assigned schools

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