101 W William St, Superior (Louisville), CO 80027 Property Records

Boulder County property record for 101 W William St, Superior, CO 80027

Property Summary

Property Type	Single Family Home
Details	4 bd · 3.5 ba · 2,738 sqft · built 2023
Lot Size	0.144 acres (6,281 sqft)
Owner	2 Individual Names on Record
Last Sale	$418,000 (Jan 2020)
Tax Bill	$6,628 (2025)
Deeds & Mortgages	Dec 2022 Mortgage Mar 2021 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`1577-24-0-10-007`

Property Details

APN / Parcel Number

Primary APN	`1577-24-0-10-007`
Alternative APNs	`R0029318` `0029318`

Interior

Bedrooms	4 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Total Rooms	10 Rooms
Stories	1 Story
Building Area	2,738 sqft Living Area
Gross Area	3,168 sqft
1st Floor Area	899 sqft
Basement Area	648 sqft
Finished Basement	648 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 2023
Effective Year Built	Effective 2023
Architectural Style	Ranch
Exterior Material	Wood Shingle
Construction Type	Masonry / Concrete Block
Roof Material	Asphalt
Lot Area	6,281 sqft (0.144 acres)
Garage Type	Attached
Garage Area	430 sqft
Patio Area	140 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0029318
Street Address	101 W WILLIAM ST
City	SUPERIOR
State	CO
Zip	80027-9643
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 12 BLK B SUPERIOR
Legal Range	70
Legal Township	1S
Legal Section	24
Legal Subdivision	SUPERIOR & SOUTH - SP
Legal Block	B
Legal Lot Number	12
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	1
Census Block	1039
Census Tract	60602

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	101 W WILLIAM ST, SUPERIOR, CO 80027-9643
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Dec 1, 2022	Deed of Trust, Mortgage · SBA Mortgage UNITED STATES SMALL BUSINESS ADMIN
Mar 31, 2021	Deed of Trust, Mortgage · Conventional Mortgage ELEVATIONS CU
Jan 13, 2020	Warranty Deed, Transfer · Conventional with PMI ELEVATIONS CU

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jan 13, 2020 · Amount on Record
Deed Sale	Jan 13, 2020 · Amount on Record
Prior Sale	Aug 9, 2007 · Amount on Record
Deed Document Number	20203760044
Prior Transfer Date	Jun 9, 2010
Prior Transfer Doc	0003081083
Record Updated	Oct 29, 2026

December 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	101 W WILLIAM ST, SUPERIOR, CO 80027-9643
Transaction Type	Mortgage
Record Updated	Feb 27, 2024

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	12140 W 65TH AVE, ARVADA, CO 80004-2406
Investor	Possibly a Property Investor

Mortgage

Document Number	0003990660
Date	Dec 1, 2022
Instrument	3990660

Lender

Name	UNITED STATES SMALL BUSINESS ADMIN
Type	Government Agency
Address	EL PASO, TX 79925

Agreement

Type	SBA Mortgage
Amount	Amount Recorded
Term	353 Months
Due	May 3, 2052

March 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	101 W WILLIAM ST, SUPERIOR, CO 80027-9643
Transaction Type	Mortgage
Record Updated	Feb 27, 2024
Title Company	HERITAGE TITLE COMPANY, HERITAGE TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003873031
Date	Mar 31, 2021
Instrument	3873031

Lender

Name	ELEVATIONS CU
Type	Credit Union
Address	BOULDER, CO 80301

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Apr 1, 2051

January 2020: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Jan 13, 2020
Property Address	101 W WILLIAM ST, SUPERIOR, CO 80027-9643
Document Number	0003760044
Instrument Date	Jan 3, 2020
Instrument	3760044
Transaction Type	Transfer
Record Updated	Jan 29, 2020
Title Company	FIRST AMERICAN TITLE, FIRST AMERICAN TITLE INSURANCE

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$42.00
Amount Accuracy	Confirmed
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	101 W WILLIAM ST SUPERIOR CO 800279643, SUPERIOR, CO 80027-9643

Mortgage

Document Number	3760045
Date	Jan 13, 2020
Instrument	3760045

Lender

Name	ELEVATIONS CU
Address	BOULDER, CO 80301

Agreement

Type	Conventional with PMI
Amount	Amount Recorded
Term	360 Months
Due	Jan 12, 2050

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	Colorado
County	Boulder County
Municipality	Superior Town
Unified School District	Boulder Valley School District RE-2 (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$60,146 (+0.82%) Land $20,257 Building $39,889	$954,500 (-) Land $367,900 Building $586,600
2025	$6,628.00 (+490.73%)	$59,657 (+306.77%) Land $22,994 Building $36,663	$954,500 (+336.04%) Land $367,900 Building $586,600
2023	$1,122.00 (+107.01%)	$14,666 (+182.85%) Land $14,666	$218,900 (+193.43%) Land $218,900
2022	$542.00	$5,185 Land $5,185	$74,600 Land $74,600

Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.

Flood

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	3 in force
Nearby Flood Claims	1 (2013)
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

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

Wildfire Risk	High above 73% of the US · above 70% of Colorado
Wildfire Likelihood	0.4% 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	SUPERIOR MD NO 1 serves 17,900 people · EPA ID CO0107725
Water Source	Surface water
Last State Inspection	Feb 2025
Lead	Under 1 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	Treatment failure resolved · Dec 2021
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 126 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable · Fiber in parts of the area	2,000 / 2,000
T-Mobile Fixed Wireless	100 / 20

May also be available: CenturyLink, LiveWireNet.

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