Home Colorado Boulder County Superior W William St
206 W William St, Superior (Louisville), CO 80027 Property Records
Boulder County property record for 206 W William St, Superior, CO 80027
Property Summary
Property Type Single Family Home Details 3 bd · 3.25 ba · 2,484 sqft · built 2023 Lot Size 0.155 acres (6,764 sqft) Owner Trust Name on File Last Sale $600,000 (Dec 2020) Tax Bill $7,589 (2025) Deeds & Mortgages Dec 2025 Sale Mar 2023 Sale + 4 more Flood Zone Zone X (minimal risk)APN 1577-24-0-14-002
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Property Details APN / Parcel Number
Primary APN 1577-24-0-14-002 Alternative APNs
Interior
Bedrooms 3 Beds Full Baths 3.25 Baths Half Baths 2 Half Baths Total Rooms 8 Rooms Stories 1 Story Building Area 2,484 sqft Living Area 1st Floor Area 1,721 sqft Interior Walls Wallboard/Drywall
Exterior
Year Built Built 2023 Effective Year Built Effective 2023 Architectural Style Ranch Exterior Material Composition/Composite Construction Type Frame Roof Material Asphalt Lot Area 6,764 sqft (0.155 acres) Garage Type Detached Garage Area 718 sqft Parking Spaces 1 Parking Space
Utilities, Heating & Cooling Cooling System Central Heating System Forced Air with A/C
Location & Zoning Account Number R0029334 Street Address 206 W WILLIAM ST City SUPERIOR State CO Zip 80027-9646 Property Category Residential Property Type Residential > Single Family > Home Legal Description LOT 3 BLK F LESS MIN SUPERIOR Legal Range 70 Legal Township 1S Legal Section 24 Legal Subdivision SUPERIOR & SOUTH - SP Legal Block F Legal Lot Number 3 Jurisdiction BOULDER CO Township / Civil Division BOULDER Census Block Group 1 Census Block 1020 Census Tract 60602
Owner
206 W William St is owner-occupied and held in a trust since March 2023.
Source: Boulder County records, as of September 18, 2026
Owner of Record Trust Name on File Mailing Address 206 W WILLIAM ST, SUPERIOR, CO 80027-9646 Occupancy Owner Occupied Owner Type Company Vesting Trust, Revocable Trust
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial .
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Deeds, Mortgages & Sale History
Date Document Dec 17, 2025 Special Warranty Deed, Transfer Mar 15, 2023 Beneficiary Deed, Transfer Dec 23, 2020 Special Warranty Deed, Transfer · Conventional Mortgage ELEVATIONS CU Apr 6, 2020 Quit Claim Deed, Transfer NOT AVAILABLE Jul 22, 2019 Deed of Trust, Mortgage · Conventional with PMI JEAN K FOLSOM Apr 30, 2018 Warranty Deed, Transfer · Conventional Mortgage AUBREY C FOLSOM
Assessor's Deed Record
Deed Names Name on Deed Last Sale Dec 23, 2020 · Amount on File Deed Sale Dec 23, 2020 · Amount on File Prior Sale Aug 6, 2018 · Amount on File Deed Document Number 20203844735 Last Transfer Date Mar 15, 2023 Transfer Doc 0004000296 Record Updated Oct 29, 2026
December 2025: Special Warranty Deed, Transfer Document Type Special Warranty Deed Jurisdiction BOULDER CO Recording Date Dec 17, 2025 Property Address 206 W WILLIAM ST, SUPERIOR, CO 80027-9646 Document Number 0004113609 Instrument Date Dec 12, 2025 Instrument 4113609 Transaction Type Transfer Record Updated Jan 9, 2026
Transaction
Tax $0.00 Amount Accuracy No Consideration Stated Additional
Transferred From (Grantor/Seller)
Transferred To (Grantee/Buyer)
Name Verified Name Relationship Living Trust Address 206 W WILLIAM ST, SUPERIOR, CO 80027-9646
March 2023: Beneficiary Deed, Transfer Document Type Beneficiary Deed Jurisdiction BOULDER CO Recording Date Mar 15, 2023 Property Address 206 W WILLIAM ST, SUPERIOR, CO 80027-9646 Document Number 0004000296 Instrument Date Mar 15, 2023 Instrument 4000296 Transaction Type Transfer Record Updated Mar 21, 2023
Transaction
Tax $0.00 Amount Accuracy No Consideration Stated Additional
Transferred From (Grantor/Seller)
Transferred To (Grantee/Buyer)
Name Verified Name Relationship Living Trust Address 1603 EGRET WAY, SUPERIOR, CO 80027-4435
December 2020: Special Warranty Deed, Transfer Document Type Special Warranty Deed Jurisdiction BOULDER CO Recording Date Dec 23, 2020 Property Address 206 W WILLIAM ST, SUPERIOR, CO 80027-9646 Document Number 0003844735 Instrument Date Dec 22, 2020 Instrument 3844735 Transaction Type Transfer Record Updated Jul 26, 2022 Title Company COLORADO ESCROW & TITLE
Transaction
Amount Amount on Record Downpayment Downpayment on Record Loan-to-Value (LTV) LTV on Record Tax $60.00 Amount Accuracy Full Amount Stated Additional
Transferred From (Grantor/Seller)
Transferred To (Grantee/Buyer)
Name Verified Name Address 206 W WILLIAM ST, SUPERIOR, CO 80027-9646
Mortgage
Document Number 0003844736 Date Dec 23, 2020 Instrument 3844736
Lender
Name ELEVATIONS CU Type Credit Union
Agreement
Type Conventional Mortgage Amount Amount on Record Term 361 Months Due Jan 1, 2051
April 2020: Quit Claim Deed, Transfer Document Type Quit Claim Deed Jurisdiction BOULDER CO Recording Date Apr 6, 2020 Property Address 206 W WILLIAM ST, SUPERIOR, CO 80027-9646 Document Number 0003776094 Instrument Date Apr 3, 2020 Instrument 3776094 Transaction Type Transfer Record Updated Jun 8, 2020 Title Company NOT AVAILABLE
Transaction
Tax $0.00 Additional Quitclaim Intrafamily Transfer
Transferred From (Grantor/Seller)
Transferred To (Grantee/Buyer)
Name Verified Name Relationship Joint Tenants with Right of Survivorship Address 1605 S ELBERT CT SUPERIOR CO 800278007, SUPERIOR, CO 80027-8007
July 2019: Deed of Trust, Mortgage Document Type Deed of Trust Jurisdiction BOULDER CO Property Address 206 W WILLIAM ST, SUPERIOR, CO 80027-9646 Document Number 0003740803 Instrument Date Jul 22, 2019 Transaction Type Mortgage Record Updated Oct 15, 2019 Title Company NOT AVAILABLE
Transferred To (Grantee/Buyer)
Name Verified Name Address 357 MCCASLIN BLVD #200 LOUISVILLE CO 800272932, 200, LOUISVILLE, CO 80027-2932
Mortgage
Document Number 0003740803 Date Oct 4, 2019 Instrument 3740803
Lender
Name JEAN K FOLSOM Address 206 W WILLIAM ST, SUPERIOR, CO 80027-9646
Agreement
Type Conventional with PMI Amount Amount on Record Term 60 Months Due Oct 3, 2024
Interest
April 2018: Warranty Deed, Transfer Document Type Warranty Deed Jurisdiction BOULDER CO Recording Date Apr 30, 2018 Property Address 206 W WILLIAM ST, SUPERIOR, CO 80027-9646 Document Number 0003652937 Instrument Date Apr 27, 2018 Instrument 3652937 Transaction Type Transfer Record Updated Mar 28, 2019 Title Company NORTH AMERICAN TITLE
Transaction
Amount Amount on Record Loan-to-Value (LTV) LTV on Record Tax $32.00 Amount Accuracy Confirmed Additional
Transferred From (Grantor/Seller)
Transferred To (Grantee/Buyer)
Name Verified Name Relationship Company Address 2586 TRAILRIDGE DR E #200 LAFAYETTE CO 800263111, 200, LAFAYETTE, CO 80026-3111
Mortgage
Document Number 3652939 Date Apr 30, 2018 Instrument 3652939
Lender
Name AUBREY C FOLSOM Address 357 MCCASLIN BLVD # 200, LOUISVILLE, CO 80027-2932
Agreement
Type Conventional Mortgage Amount Amount on Record
Mortgage
Document Number 3652938, Date Apr 30, 2018 Instrument 3652938
Lender
Name EDWARD W BORG Address 31111 NE 13TH AVE, PORTLAND, OR 97212 Special Notes Seller Financed
Agreement
Amount Amount on Record Term 24 Months Due Apr 29, 2020
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Tax Assessment & Valuation
The 2025 property tax bill for 206 W William St was $7,589, up 411% from the year before.
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 $69,550 (+1.83%) Land $21,195 Building $48,355 $1,092,800 (-) Land $381,700 Building $711,100 2025 $7,589.00 (+411.04%) $68,300 (+376.52%) Land $23,856 Building $44,444 $1,092,800 (+306.35%) Land $381,700 Building $711,100 2024 $1,485.00 (+25.95%) $14,333 (-5.84%) Land $11,537 Building $2,796 $268,931 (+18.37%) Land $227,200 Building $41,731 2023 $1,179.00 (+109.79%) $15,222 (+182.99%) Land $15,222 $227,200 (+193.54%) Land $227,200 2022 $562.00 $5,379 Land $5,379 $77,400 Land $77,400
Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.
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Tax and assessment analysis, valuation & comps, ownership context, and lien insights — all in one PDF. See a sample report →
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Flood
FEMA maps place 206 W William St 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 Xminimal risk Nearest Special Flood Hazard Area Zone AE, within 500 ft Flood Insurance Requirement Not requiredlenders 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
Wildfire risk around 206 W William St is high, ranking above 73% of the US, with a 0.4% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
Wildfire Risk Highabove 73% of the US · above 70% of Colorado Wildfire Likelihood 0.4% annual chance Exposure Directburnable 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 1serves 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 failureresolved · Dec 2021 Treatment and Procedure Nonelast 10 years Monitoring and Reporting Nonelast 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) XfinityCable · Fiber in parts of the area 2,000 / 2,000 T-MobileFixed Wireless 100 / 20
May also be available: CenturyLink, LiveWireNet.
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