3657 Silverton St, Boulder, CO 80301 Property Records

Boulder County property record for 3657 Silverton St, Boulder, CO 80301

Property Summary

Property Type	Single Family Home
Details	4 bd · 3.25 ba · 3,747 sqft · built 2016
Lot Size	0.099 acres (4,295 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,762,500 (Jun 2024)
Tax Bill	$9,176 (2025)
Deeds & Mortgages	May 2021 Sale & Mortgage Sep 2017 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`1463-20-1-56-008`

Property Details

APN / Parcel Number

Primary APN	`1463-20-1-56-008`
Alternative APN	`R0601917`

Interior

Bedrooms	4 Beds
Full Baths	3.25 Baths
Half Baths	2 Half Baths
Total Rooms	9 Rooms
Stories	2 Stories
Building Area	3,747 sqft Living Area
Gross Area	4,313 sqft
1st Floor Area	1,178 sqft
Upper Floors Area	1,391 sqft
Basement Area	1,178 sqft
Finished Basement	1,178 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 2016
Effective Year Built	Effective 2016
Architectural Style	A-Frame
Exterior Material	Wood Shingle
Construction Type	Frame
Roof Material	Asphalt
Lot Area	4,295 sqft (0.099 acres)
Garage Type	Attached
Garage Area	566 sqft
Parking Spaces	2 Parking Spaces
Porch	Porch
Porch Area	144 sqft
Deck Area	144 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0601917
Street Address	3657 SILVERTON ST
City	BOULDER
State	CO
Zip	80301-3614
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 87 NORTHFIELD COMMONS REPLAT A
Legal Range	70
Legal Township	1N
Legal Section	20
Legal Subdivision	NORTHFIELD COMMONS REPLAT A
Legal Block	4
Legal Lot Number	87
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	4
Census Block	4022
Census Tract	12701

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	3657 SILVERTON ST, BOULDER, CO 80301-3614
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
May 5, 2021	Special Warranty Deed, Transfer · Conventional Mortgage FIRST WESTERN TRUST BANK
Sep 8, 2017	Special Warranty Deed, Transfer · ARM GUILD MORTGAGE CO

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 17, 2024 · Amount on Record
Deed Sale	Jun 17, 2024 · Amount on Record
Prior Sale	May 5, 2021 · Amount on Record
Deed Document Number	20244050789
Record Updated	Oct 29, 2026

May 2021: Special Warranty Deed, Transfer

Document Type	Special Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	May 5, 2021
Property Address	3657 SILVERTON ST, BOULDER, CO 80301-3614
Document Number	0003883166
Instrument Date	Apr 30, 2021
Instrument	3883166
Transaction Type	Transfer
Record Updated	May 19, 2021
Title Company	LAND TITLE GUARANTEE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$130.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3657 SILVERTON ST, BOULDER, CO 80301-3614

Mortgage

Document Number	0003883167
Date	May 5, 2021
Instrument	3883167

Lender

Name	FIRST WESTERN TRUST BANK
Type	Bank
Address	ENGLEWOOD, CO 80111

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	May 1, 2051

September 2017: Special Warranty Deed, Transfer

Document Type	Special Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Sep 8, 2017
Property Address	3657 SILVERTON ST, BOULDER, CO 80301-3614
Document Number	0003613794
Map Reference	DOC3272534
Instrument Date	Sep 7, 2017
Instrument	3613794
Transaction Type	Transfer
Record Updated	Mar 31, 2022
Title Company	HERITAGE TITLE CO

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$112.50
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	3657 SILVERTON ST, BOULDER, CO 80301-3614

Mortgage

Document Number	0003613795
Date	Sep 8, 2017
Instrument	3613795

Lender

Name	GUILD MORTGAGE CO
Type	Mortgage Company

Agreement

Type	ARM
Amount	Amount Recorded
Term	361 Months
Due	Oct 1, 2047

Interest

Rate Type	Adjustable Rate
Rate	3.75%
Type Change Date	Oct 1, 2024
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	8.75%
Index	1-Year LIBOR
Max Rate	8.75%

Tax Assessment & Valuation

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		$99,953 (+3.85%) Land $20,760 Building $79,193	$1,539,900 (-) Land $375,300 Building $1,164,600
2025	$9,176.00 (+4.5%)	$96,244 (-8.66%) Land $23,456 Building $72,788	$1,539,900 (-2.09%) Land $375,300 Building $1,164,600
2023	$8,781.00 (+9.79%)	$105,371 (+22.34%) Land $24,127 Building $81,244	$1,572,700 (+26.9%) Land $360,100 Building $1,212,600
2022	$7,998.00	$86,131 Land $21,774 Building $64,357	$1,239,300 Land $313,300 Building $926,000

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

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
Flood Insurance Cost	Premium on Record median of 20 policies
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	20 in force
Nearby Flood Claims	14 (2013–2015)
Claims Outside the SFHA	4 of 14
Most Recent Claim	May 2015 · Severe Storms, Tornadoes, Flooding, Landslides, And Mudslides
Claims by Event	Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 13 claims

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	Low lower than 80% of the US · lower than 91% of Colorado
Wildfire Likelihood	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 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 615 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Ayva Networks Fixed Wireless	2,500 / 2,500
Xfinity Cable	2,000 / 250
LiveWireNet Fixed Wireless	250 / 100
CenturyLink DSL · Fiber in parts of the area	140 / 20

May also be available: AT&T, Verizon.

Cell Coverage

5G (outdoors only) and 4G LTE

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