1345 Mariposa Ave, Boulder, CO 80302 Property Records

Boulder County property record for 1345 Mariposa Ave, Boulder, CO 80302

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.5 ba · 3,040 sqft · built 1951
Lot Size	0.354 acres (15,424 sqft)
Owner	Company Name on Record
Last Sale	$1,825,000 (May 2016)
Tax Bill	$15,965 (2025)
Deeds & Mortgages	May 2018 Mortgage Jun 2019 Mortgage + 2 more
Flood Zone	Zone X (moderate risk)
APN	`1577-06-2-28-007`

Property Details

APN / Parcel Number

Primary APN	`1577-06-2-28-007`
Alternative APNs	`R0503546` `0503546`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	2 Half Baths
Total Rooms	9 Rooms
Stories	1 Story
Building Area	3,040 sqft Living Area
Gross Area	3,521 sqft
1st Floor Area	3,040 sqft
Basement Area	481 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1951
Effective Year Built	Effective 1995
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Roof Material	Asphalt
Lot Area	15,424 sqft (0.354 acres)
Garage Type	Carport
Garage Area	525 sqft
Carport	Carport
Carport Area	525 sqft
Parking Spaces	2 Parking Spaces
Porch	Porch
Porch Area	336 sqft
Patio Area	380 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0503546
Street Address	1345 MARIPOSA AVE
City	BOULDER
State	CO
Zip	80302-7841
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 4 & E 25 X 90.5 FT OF OUTLOT 3 BLK 1 BELLEVUE PARK REPLAT
Legal Range	70
Legal Township	1S
Legal Section	06
Legal Subdivision	BELLEVUE PARK REPLAT - BO
Legal Block	1
Legal Lot Number	4
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	2
Census Block	2008
Census Tract	12505

Owner

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

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record	Company Name on Record
Mailing Address	1345 MARIPOSA AVE, BOULDER, CO 80302-7841
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
May 10, 2018	Deed of Trust, Mortgage · Commercial Mortgage FIRST NATIONAL BANK OF OMAHA
Jun 5, 2019	Deed of Trust, Mortgage · Commercial Mortgage FIRST NATIONAL BANK OF OMAHA
Dec 29, 2020	Deed of Trust, Mortgage · Conventional Mortgage BBVA USA
Jul 19, 2021	Intrafamily Transfer, Transfer · Conventional Mortgage ELEVATIONS CU

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	May 10, 2016 · Amount on Record
Deed Sale	May 10, 2016 · Amount on Record
Prior Sale	Nov 25, 2008 · Amount on Record
Deed Document Number	20163517006
Last Transfer Date	Jul 13, 2021
Transfer Doc	0003900675
Record Updated	Oct 29, 2026

May 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	1345 MARIPOSA AVE, BOULDER, CO 80302-7841
Transaction Type	Mortgage
Record Updated	Jul 26, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003654915
Date	May 10, 2018
Instrument	3654915

Lender

Name	FIRST NATIONAL BANK OF OMAHA
Type	Bank
Address	OMAHA, NE 68197

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded
Term	360 Months
Due	May 5, 2048

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

June 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	1345 MARIPOSA AVE, BOULDER, CO 80302-7841
Transaction Type	Mortgage
Record Updated	Jul 26, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003716342
Date	Jun 5, 2019
Instrument	3716342

Lender

Name	FIRST NATIONAL BANK OF OMAHA
Type	Bank
Address	OMAHA, NE 68197

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded
Term	59 Months
Due	May 26, 2024

December 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	1345 MARIPOSA AVE, BOULDER, CO 80302-7841
Transaction Type	Mortgage
Record Updated	Jul 26, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003845884
Date	Dec 29, 2020
Instrument	3845884

Lender

Name	BBVA USA
Type	Bank
Address	BIRMINGHAM, AL 35233

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	313 Months
Due	Jan 1, 2047

July 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	BOULDER CO
Recording Date	Jul 19, 2021
Property Address	1345 MARIPOSA AVE, BOULDER, CO 80302-7841
Document Number	0003900675
Instrument Date	Jul 13, 2021
Instrument	3900675
Transaction Type	Transfer
Record Updated	Jun 7, 2023

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	1345 MARIPOSA AVE, BOULDER, CO 80302-7841

Mortgage

Document Number	0003900766
Date	Jul 19, 2021
Instrument	3900766

Lender

Name	ELEVATIONS CU
Type	Credit Union

Agreement

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

Interest

Min Rate At Change	2.75%
Max Rate At Change	7.62%
Max Rate	7.62%

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		$177,412 (+5.96%) Land $140,950 Building $36,462	$2,679,000 (-) Land $2,142,800 Building $536,200
2025	$15,965.00 (+6.91%)	$167,438 (-5.19%) Land $133,925 Building $33,513	$2,679,000 (+1.64%) Land $2,142,800 Building $536,200
2023	$14,933.00 (+14.48%)	$176,606 (+25.73%) Land $137,310 Building $39,296	$2,635,900 (+30.42%) Land $2,049,400 Building $586,500
2022	$13,044.00	$140,467 Land $115,822 Building $24,645	$2,021,100 Land $1,666,500 Building $354,600

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 moderate risk
500-Year Floodplain	Yes 0.2% annual chance
Nearest Special Flood Hazard Area	Zone AE, within 100 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 34 policies
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	34 in force
Nearby Flood Claims	17 (1980–2015)
Claims Outside the SFHA	7 of 17
Most Recent Claim	May 2015 · Severe Storms, Tornadoes, Flooding, Landslides, And Mudslides
Claims by Event	Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 11 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 74% of the US · above 72% 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	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 480 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	2,000 / 1,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
LiveWireNet Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20

May also be available: Magnolia Road Internet Cooperative.

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