433 Sumner St, Longmont, CO 80501 Property Records

Boulder County property record for 433 Sumner St, Longmont, CO 80501

Property Summary

Property Type	Single Family Home
Details	3 bd · 1 ba · 1,804 sqft · built 1950
Lot Size	0.148 acres (6,461 sqft)
Owner	2 Individual Names on File
Last Sale	$92,500 (Sep 1993)
Tax Bill	$3,723 (2025)
Deeds & Mortgages	Jun 2018 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`1315-04-1-25-019`

Property Details

APN / Parcel Number

Primary APN	`1315-04-1-25-019`
Alternative APNs	`R0040659` `0040659`

Interior

Bedrooms	3 Beds
Full Baths	1 Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,804 sqft Living Area
Gross Area	2,522 sqft
1st Floor Area	1,529 sqft
Basement Area	993 sqft
Finished Basement	275 sqft
Unfinished Basement	718 sqft
Interior Walls	Plaster

Exterior

Year Built	Built 1950
Effective Year Built	Effective 1950
Architectural Style	Ranch
Exterior Material	Wood Shingle
Construction Type	Frame
Lot Area	6,461 sqft (0.148 acres)
Garage Type	Detached
Garage Area	648 sqft
Parking Spaces	2 Parking Spaces
Porch	Porch
Porch Area	56 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0040659
Street Address	433 SUMNER ST
City	LONGMONT
State	CO
Zip	80501-4865
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOTS 39-40 BLK 1 CAPITOL HILL
Legal Range	69
Legal Township	2N
Legal Section	04
Legal Subdivision	CAPITOL HILL - LG
Legal Block	1
Legal Lot Number	39
Jurisdiction	BOULDER CO
Township / Civil Division	LONGMONT
Census Block Group	4
Census Block	4006
Census Tract	13302

Owner

433 Sumner St is owned and occupied by two individuals who acquired it in January 2025.

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

Owner of Record	2 Individual Names on File
Mailing Address	433 SUMNER ST, LONGMONT, CO 80501-4865
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Unmarried

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	Sep 1, 1993 · Amount on File
Deed Sale	Sep 1, 1993 · Amount on File
Prior Sale	Apr 8, 1993
Deed Document Number	19931332389
Last Transfer Date	Jan 25, 2025
Transfer Doc	0004074554
Record Updated	Oct 29, 2026

June 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	433 SUMNER ST, LONGMONT, CO 80501-4865
Document Number	0003661140
Instrument Date	Jun 12, 2018
Transaction Type	Mortgage
Record Updated	Jun 27, 2018

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	6481 REDWING PL LONGMONT CO 805038720, LONGMONT, CO 80503-8720

Mortgage

Document Number	0003661140
Date	Jun 18, 2018
Instrument	3661140

Lender

Name	ELEVATIONS CU
Address	BOULDER, CO 80301

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	240 Months
Due	Jun 17, 2038

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

The 2025 property tax bill for 433 Sumner St was $3,723, up 12.2% from the year before.

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		$34,731 (-2.08%) Land $6,429 Building $28,302	$567,500 (-) Land $151,300 Building $416,200
2025	$3,723.00 (+12.17%)	$35,469 Land $9,456 Building $26,013	$567,500 Land $151,300 Building $416,200
2024	$3,319.00 (+1.41%)
2023	$3,273.00 (+11.48%)	$38,384 (+29.34%) Land $10,579 Building $27,805	$572,900 (+34.17%) Land $157,900 Building $415,000
2022	$2,936.00	$29,677 Land $7,784 Building $21,893	$427,000 Land $112,000 Building $315,000

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 433 Sumner St in Zone X, an area of minimal flood risk.

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	1 in force

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 433 Sumner St is low, with less than 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 98% of the US · lower than 99.2% of Colorado
Wildfire Likelihood	Under 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 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 506 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
Rise Broadband Fixed Wireless	100 / 20
T-Mobile Fixed Wireless	100 / 20