The 2025 property tax bill for 903 18th St, Apt 301 was $4,112.
Source: Boulder County assessment roll, as of September 18, 2026
Property Jurisdictions
Type
Name
State
Colorado
County
Boulder County
Municipality
Boulder City
Unified School District
Boulder Valley School District RE-2 (PK - 12)
Tax Bill & Assessment History
Year
Tax Bill
Assessed Value
Assessed Market Value
2026
$41,402 (-2.08%)Building $41,402
$676,500 (-)Building $676,500
2025
$4,112.00
$42,281Building $42,281
$676,500Building $676,500
2023
$3,202.00 (-11.28%)
$39,901 (+4.82%)Building $39,901
$595,536 (+8.73%)Building $595,536
2022
$3,609.00
$38,065Building $38,065
$547,700Building $547,700
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
Flood
FEMA maps place 903 18th St, Apt 301 in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2013.
Source: FEMA National Flood Hazard Layer, effective October 14, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
FEMA Flood Zone
Zone X minimal risk
Flood Insurance Requirement
Not required lenders may require it
Nearby Flood Claims
1 (2013)
Claims Outside the SFHA
1 of 1
Most Recent Claim
Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire
Wildfire risk around 903 18th St, Apt 301 is moderate, ranking above 40% of the US, with a 0.06% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
Wildfire Risk
Moderate above 40% of the US · lower than 76% of Colorado
Wildfire Likelihood
0.06% annual chance
Exposure
Indirect within ember reach
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Drinking Water
Source: EPA Safe Drinking Water Information System, as of September 2026
Water System
CITY OF BOULDER serves 166,080 people · EPA ID CO0107152
Water Source
Surface water
Last State Inspection
Sep 2024
Lead
2 ppb (2023–2025) action level 15 ppb
Violations Reported to EPA
Water Quality
Haloacetic acids resolved · Jul 2017
Treatment and Procedure
None last 10 years
Monitoring and Reporting
1 last 3 years
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Internet Providers
Source: FCC Broadband Data Collection, based on 481 locations within half a mile, as of December 31, 2025
Provider
Max Down / Up (Mbps)
Ayva Networks Fixed Wireless
2,500 / 2,500
CenturyLink Fiber · DSL in parts of the area
2,000 / 1,000
Xfinity Cable
2,000 / 250
Verizon Fixed Wireless
300 / 20
LiveWireNet Fixed Wireless
250 / 100
T-Mobile Fixed Wireless
100 / 20
May also be available: Magnolia Road Internet Cooperative.