345 Dewey Ave, Boulder, CO 80304 Property Records

Boulder County property record for 345 Dewey Ave, Boulder, CO 80304

Property Summary

Property Type	Single Family Home
Details	4 bd · 3.75 ba · 4,212 sqft · built 2016
Lot Size	0.136 acres (5,931 sqft)
Owner	Company Name on Record
Last Sale	$3,425,000 (Oct 2020)
Tax Bill	$24,805 (2025)
Deeds & Mortgages	Dec 2020 Transfer Oct 2020 Sale & Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`1461-25-2-12-014`

Property Details

APN / Parcel Number

Primary APN	`1461-25-2-12-014`
Alternative APN	`R0602666`

Interior

Bedrooms	4 Beds
Full Baths	3.75 Baths
Half Baths	4 Half Baths
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	4,212 sqft Living Area
Gross Area	4,368 sqft
1st Floor Area	1,511 sqft
Upper Floors Area	1,331 sqft
Basement Area	1,511 sqft
Finished Basement	1,355 sqft
Unfinished Basement	156 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 2016
Effective Year Built	Effective 2016
Exterior Material	Brick Veneer
Construction Type	Frame
Roof Material	Asphalt
Lot Area	5,931 sqft (0.136 acres)
Garage Type	Detached
Garage Area	495 sqft
Parking Spaces	2 Parking Spaces
Porch	Porch
Porch Area	226 sqft
Patio Area	312 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0602666
Street Address	345 DEWEY AVE
City	BOULDER
State	CO
Zip	80304-3973
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 14 TRAILHEAD SUBDIVISION
Legal Range	71
Legal Township	1N
Legal Section	25
Legal Subdivision	TRAILHEAD SUBDIVISION
Legal Block	1
Legal Lot Number	14
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	1
Census Block	1007
Census Tract	12101

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	Company Name on Record
Mailing Address	345 DEWEY AVE, BOULDER, CO 80304-3973
Owner Type	Company
Vesting	Trust, Irrevocable Trust

Deeds, Mortgages & Sale History

Date	Document
Dec 3, 2020	Quit Claim Deed, Transfer NOT AVAILABLE
Oct 30, 2020	Special Warranty Deed, Transfer · VA Mortgage DSW MORTGAGE INC
Sep 15, 2020	Grant Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Oct 30, 2020 · Amount on Record
Deed Sale	Oct 30, 2020 · Amount on Record
Prior Sale	Mar 26, 2014 · Amount on Record
Deed Document Number	20203828849
Prior Transfer Date	Oct 29, 2020
Prior Transfer Doc	0003838641
Record Updated	Oct 29, 2026

December 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	BOULDER CO
Recording Date	Dec 3, 2020
Property Address	345 DEWEY AVE, BOULDER, CO 80304-3973
Document Number	0003838641
Instrument Date	Oct 29, 2020
Instrument	3838641
Transaction Type	Transfer
Record Updated	Jan 8, 2021
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Irrevocable Trust
Address	345 DEWEY AVE BOULDER CO 803043973, BOULDER, CO 80304-3973
Investor	Possibly a Property Investor

October 2020: Special Warranty Deed, Transfer

Document Type	Special Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Oct 30, 2020
Property Address	345 DEWEY AVE, BOULDER, CO 80304-3973
Document Number	0003828849
Map Reference	DOC 3325258
Instrument Date	Oct 28, 2020
Instrument	3828849
Transaction Type	Transfer
Record Updated	Jul 26, 2022
Title Company	HERITAGE TITLE CO

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$342.50
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	345 DEWEY AVE, BOULDER, CO 80304-3973

Mortgage

Document Number	0003828850
Date	Oct 30, 2020
Instrument	3828850

Lender

Name	DSW MORTGAGE INC
Type	Mortgage Company

Agreement

Type	VA Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Nov 1, 2050

September 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	BOULDER CO
Recording Date	Sep 15, 2020
Property Address	345 DEWEY AVE, BOULDER, CO 80304-3973
Document Number	0003815294
Instrument Date	Sep 3, 2020
Instrument	3815294
Transaction Type	Transfer
Record Updated	Oct 20, 2020
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Tenants in Common
Address	345 DEWEY AVE BOULDER CO 803043959, BOULDER, CO 80304-3959

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		$278,290 (+6.97%) Land $86,108 Building $192,182	$4,162,500 (-) Land $1,336,300 Building $2,826,200
2025	$24,805.00 (+2.61%)	$260,157 (-8.27%) Land $83,519 Building $176,638	$4,162,500 (-1.66%) Land $1,336,300 Building $2,826,200
2023	$24,173.00 (+16.41%)	$283,604 (+26.83%) Land $92,567 Building $191,037	$4,232,900 (+31.56%) Land $1,381,600 Building $2,851,300
2022	$20,765.00	$223,610 Land $66,477 Building $157,133	$3,217,400 Land $956,500 Building $2,260,900

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 12 individual policies
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	16 units insured incl. 4 condo units
Nearby Flood Claims	3 (2013)
Claims Outside the SFHA	3 of 3
Most Recent Claim	Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides
Claims by Event	Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 3 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	High above 77% of the US · above 78% of Colorado
Wildfire Likelihood	0.4% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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 684 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Ayva Networks Fixed Wireless	2,500 / 2,500
CenturyLink Fiber · DSL in parts of the area	2,000 / 1,000
Xfinity Cable	2,000 / 250
LiveWireNet Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: Verizon.

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