1850 del Rosa Ct, Boulder, CO 80304 Property Records

Boulder County property record for 1850 del Rosa Ct, Boulder, CO 80304

Property Summary

Property Type	Single Family Home
Details	3 bd · 1.75 ba · 1,254 sqft · built 1971
Lot Size	0.119 acres (5,184 sqft)
Owner	2 Individual Names on File
Last Sale	$33,000 (Dec 1971)
Tax Bill	$5,711 (2025)
Deeds & Mortgages	Nov 2021 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`1463-19-2-00-080`

Property Details

APN / Parcel Number

Primary APN	`1463-19-2-00-080`
Alternative APNs	`R0002869` `0002869`

Interior

Bedrooms	3 Beds
Full Baths	1.75 Baths
Half Baths	1 Half Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,254 sqft Living Area
Gross Area	2,908 sqft
1st Floor Area	1,254 sqft
Basement Area	1,254 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1971
Effective Year Built	Effective 1971
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Roof Material	Asphalt
Lot Area	5,184 sqft (0.119 acres)
Garage Type	Attached
Garage Area	400 sqft
Parking Spaces	2 Parking Spaces
Patio Area	128 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0002869
Street Address	1850 DEL ROSA CT
City	BOULDER
State	CO
Zip	80304-1801
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	TR 581A-6 BOULDER TR
Legal Range	70
Legal Township	1N
Legal Section	19
Legal Subdivision	TR, NBR 126 & 135
Legal Tract	581A-6
Legal Block	4
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	4
Census Block	4011
Census Tract	12105

Owner

1850 del Rosa Ct is owned and occupied by two individuals who bought it in December 1971.

Source: Boulder County records, as of September 18, 2026

Owner of Record	2 Individual Names on File
Mailing Address	1850 DEL ROSA CT, BOULDER, CO 80304-1801
Occupancy	Owner Occupied
Owner Type	Individual

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Dec 15, 1971 · Amount on File
Deed Sale	Dec 15, 1971 · Amount on File
Deed Document Number	1971746
Record Updated	Oct 29, 2026

November 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	1850 DEL ROSA CT, BOULDER, CO 80304-1801
Transaction Type	Mortgage
Record Updated	Mar 31, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003928164
Date	Nov 15, 2021
Instrument	3928164

Lender

Name	CANVAS CU
Type	Credit Union
Address	ENGLEWOOD, CO 80155

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	240 Months
Due	Nov 15, 2041

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

Tax Assessment & Valuation

The 2025 property tax bill for 1850 del Rosa Ct was $5,711.

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		$67,211 (+1.6%) Land $27,785 Building $39,426	$1,058,400 (-) Land $478,600 Building $579,800
2025	$5,711.00	$66,151 Land $29,913 Building $36,238	$1,058,400 Land $478,600 Building $579,800
2023	$5,570.00 (+21.3%)	$74,893 (+32.79%) Land $31,242 Building $43,651	$1,117,800 (+37.74%) Land $466,300 Building $651,500
2022	$4,592.00	$56,399 Land $24,985 Building $31,414	$811,500 Land $359,500 Building $452,000

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

FEMA maps place 1850 del Rosa Ct in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.

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
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	5 in force
Nearby Flood Claims	2 (1990–1991)
Claims Outside the SFHA	2 of 2
Most Recent Claim	May 1991 · rainfall accumulation

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 1850 del Rosa Ct is low, with a 0.01% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 80% of the US · lower than 91% of Colorado
Wildfire Likelihood	0.01% annual chance
Exposure	None beyond 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 483 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Ayva Networks Fixed Wireless	2,500 / 2,500
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
LiveWireNet Fixed Wireless	250 / 100
CenturyLink DSL · Fiber in parts of the area	140 / 20
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20