643 Buchanan Ln, Longmont, CO 80504 Property Records

Boulder County property record for 643 Buchanan Ln, Longmont, CO 80504

Property Summary

Property Type	Single Family Home
Details	3 bd · 1.75 ba · 2,100 sqft · built 1978
Lot Size	0.153 acres (6,654 sqft)
Owner	2 Individual Names on Record
Last Sale	$127,000 (Feb 1997)
Tax Bill	$2,861 (2025)
Deeds & Mortgages	Oct 2021 Mortgage Nov 2020 Transfer
Flood Zone	Zone X (minimal risk)
APN	`1315-02-1-13-020`

Property Details

APN / Parcel Number

Primary APN	`1315-02-1-13-020`
Alternative APNs	`R0069648` `0069648`

Interior

Bedrooms	3 Beds
Full Baths	1.75 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	1 Story
Building Area	2,100 sqft Living Area
Gross Area	2,400 sqft
1st Floor Area	1,050 sqft
Basement Area	1,050 sqft
Finished Basement	1,050 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1978
Effective Year Built	Effective 1978
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Lot Area	6,654 sqft (0.153 acres)
Garage Type	Attached
Garage Area	300 sqft
Parking Spaces	1 Parking Space
Patio Area	144 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0069648
Street Address	643 BUCHANAN LN
City	LONGMONT
State	CO
Zip	80504-1513
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 20 BLK 16 SUNNYVALE 5
Legal Range	69
Legal Township	2N
Legal Section	02
Legal Subdivision	SUNNYVALE 5
Legal Block	16
Legal Lot Number	20
Jurisdiction	BOULDER CO
Township / Civil Division	LONGMONT
Census Block Group	5
Census Block	5015
Census Tract	13402

Owner

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

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on Record
Mailing Address	643 BUCHANAN LN, LONGMONT, CO 80504-1513
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants with Right of Survivorship

Deeds, Mortgages & Sale History

Date	Document
Oct 4, 2021	Deed of Trust, Mortgage · Conventional Mortgage ADAMS BANK & TRUST
Nov 12, 2020	Intrafamily Transfer, Transfer

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Feb 25, 1997 · Amount on Record
Deed Sale	Feb 25, 1997 · Amount on Record
Prior Sale	Mar 11, 1993 · Amount on Record
Deed Document Number	19971679275
Last Transfer Date	Nov 9, 2020
Transfer Doc	0003832566
Record Updated	Oct 29, 2026

October 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	643 BUCHANAN LN, LONGMONT, CO 80504-1513
Transaction Type	Mortgage
Record Updated	Oct 27, 2021
Title Company	FIRST AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003918170
Date	Oct 4, 2021
Instrument	3918170

Lender

Name	ADAMS BANK & TRUST
Type	Bank
Address	NORTH PLATTE, NE 69101

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	355 Months
Due	May 1, 2051

November 2020: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	BOULDER CO
Recording Date	Nov 12, 2020
Property Address	643 BUCHANAN LN, LONGMONT, CO 80504-1513
Document Number	0003832566
Instrument Date	Nov 9, 2020
Instrument	3832566
Transaction Type	Transfer
Record Updated	Mar 31, 2022

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	643 BUCHANAN LN, LONGMONT, CO 80504-1513

Tax Assessment & Valuation

Source: Boulder County assessment roll, as of September 18, 2026

Property Jurisdictions

Type	Name
State	Colorado
County	Boulder County
Municipality	Longmont City
Unified School District	St. Vrain Valley School District RE 1J (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$26,689 (-2.08%) Land $8,037 Building $18,652	$436,100 (-) Land $161,800 Building $274,300
2025	$2,861.00 (+17.25%)	$27,257 (-7.75%) Land $10,113 Building $17,144	$436,100 (-1.11%) Land $161,800 Building $274,300
2023	$2,440.00 (+11.21%)	$29,547 (+33.23%) Land $11,095 Building $18,452	$441,000 (+38.2%) Land $165,600 Building $275,400
2022	$2,194.00	$22,178 Land $7,812 Building $14,366	$319,100 Land $112,400 Building $206,700

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

Source: FEMA National Flood Hazard Layer, effective October 14, 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

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

Wildfire Risk	Low lower than 96% of the US · lower than 98.4% of Colorado
Wildfire Likelihood	Under 0.01% annual chance
Exposure	Direct burnable vegetation

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 LONGMONT serves 104,178 people · EPA ID CO0107485
Water Source	Surface water
Last State Inspection	Sep 2025
Lead	2 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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 696 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
NextLight Fiber	10,000 / 10,000
Xfinity Cable	1,200 / 35
Verizon Fixed Wireless	300 / 20
CenturyLink DSL	140 / 20

May also be available: Rise Broadband, TDS Telecom.

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