3860 Darley Ave, Boulder, CO 80305 Property Records

Boulder County property record for 3860 Darley Ave, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	5 bd · 2.25 ba · 2,000 sqft · built 1962
Lot Size	0.164 acres (7,128 sqft)
Owner	2 Individual Names on File
Last Sale	$795,000 (Apr 2019)
Tax Bill	$7,467 (2025)
Deeds & Mortgages	Oct 2017 Mortgage Apr 2019 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`1577-08-1-16-010`

Property Details

APN / Parcel Number

Primary APN	`1577-08-1-16-010`
Alternative APNs	`R0012303` `0012303`

Interior

Bedrooms	5 Beds
Full Baths	2.25 Baths
Half Baths	2 Half Baths
Total Rooms	8 Rooms
Stories	1 Story
Building Area	2,000 sqft Living Area
Gross Area	2,584 sqft
1st Floor Area	1,232 sqft
Basement Area	1,040 sqft
Finished Basement	768 sqft
Unfinished Basement	272 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1962
Effective Year Built	Effective 1997
Architectural Style	Ranch
Exterior Material	Wood Shingle
Construction Type	Frame
Roof Material	Asphalt
Lot Area	7,128 sqft (0.164 acres)
Garage Type	Attached
Garage Area	312 sqft
Parking Spaces	1 Parking Space
Patio Area	308 sqft

Utilities, Heating & Cooling

Cooling System	Evaporative
Heating System	Hot Water

Location & Zoning

Account Number	R0012303
Street Address	3860 DARLEY AVE
City	BOULDER
State	CO
Zip	80305-6517
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 10 BLK 6 MOUNTAIN TERRACE
Legal Range	70
Legal Township	1S
Legal Section	08
Legal Subdivision	MOUNTAIN TERRACE - BO
Legal Block	6
Legal Lot Number	10
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	1
Census Block	1010
Census Tract	12509

Owner

3860 Darley Ave is owned and occupied by two individuals who bought it in April 2019.

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

Owner of Record	2 Individual Names on File
Mailing Address	3860 DARLEY AVE, BOULDER, CO 80305-6517
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

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

Date	Document
Oct 3, 2017	Deed of Trust, Mortgage · Conventional Mortgage PROVIDENT FUNDING ASSOCIATES LP
Apr 24, 2019	Special Warranty Deed, Transfer · ARM HSBC BANK USA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Apr 24, 2019 · Amount on File
Deed Sale	Apr 24, 2019 · Amount on File
Prior Sale	Jul 28, 2010 · Amount on File
Deed Document Number	20193708707
Record Updated	Oct 29, 2026

October 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	3860 DARLEY AVE, BOULDER, CO 80305-6517
Transaction Type	Mortgage
Record Updated	Oct 21, 2022
Title Company	FIDELITY NATL TITLE INS CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003618162
Date	Oct 3, 2017
Instrument	3618162

Lender

Name	PROVIDENT FUNDING ASSOCIATES LP
Type	Mortgage Company
Address	SANDY, UT 84070

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	180 Months
Due	Oct 1, 2032

April 2019: Special Warranty Deed, Transfer

Document Type	Special Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Apr 24, 2019
Property Address	3860 DARLEY AVE, BOULDER, CO 80305-6517
Document Number	0003708707
Instrument Date	Apr 19, 2019
Instrument	3708707
Transaction Type	Transfer
Record Updated	Mar 31, 2022
Title Company	LEGEND TITLE COMPANY INC

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$79.50
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	00000

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	3860 DARLEY AVE, BOULDER, CO 80305-6517

Mortgage

Document Number	0003708708
Date	Apr 24, 2019
Instrument	3708708

Lender

Name	HSBC BANK USA
Type	Bank

Agreement

Type	ARM
Amount	Amount on Record
Term	361 Months
Due	May 1, 2049

Interest

Rate Type	Adjustable Rate
Rate	3.55%
Adjustable	Adjustable Rate Rider
Type Change Date	May 1, 2024
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	5.55%
Index	1-Year LIBOR
Max Rate	8.55%

Tax Assessment & Valuation

The 2025 property tax bill for 3860 Darley Ave was $7,467.

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		$80,444 (+2.72%) Land $54,019 Building $26,425	$1,253,000 (-) Land $864,400 Building $388,600
2025	$7,467.00	$78,313 Land $54,025 Building $24,288	$1,253,000 Land $864,400 Building $388,600
2023	$6,050.00 (-3.34%)	$73,747 (+10.74%) Land $43,965 Building $29,782	$1,100,700 (+14.87%) Land $656,200 Building $444,500
2022	$6,259.00	$66,595 Land $45,606 Building $20,989	$958,200 Land $656,200 Building $302,000

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 3860 Darley Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1998.

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
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	7 in force
Nearby Flood Claims	1 (1998)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Feb 1998 · tidal / storm surge

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 3860 Darley Ave is low, with a 0.03% 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	0.03% 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 604 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	2,000 / 1,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
LiveWireNet Fixed Wireless	250 / 100

May also be available: AT&T, T-Mobile.

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