1418 Mariposa Ave, Boulder, CO 80302 Property Records

Boulder County property record for 1418 Mariposa Ave, Boulder, CO 80302

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 3,728 sqft · built 1950
Lot Size	0.32 acres (13,928 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,145,000 (Feb 2008)
Tax Bill	$22,089 (2025)
Deeds & Mortgages	Apr 2021 Line of Credit Jun 2018 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`1577-06-2-29-003`

Property Details

APN / Parcel Number

Primary APN	`1577-06-2-29-003`
Alternative APNs	`R0007218` `0007218`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	1 Story
Building Area	3,728 sqft Living Area
Gross Area	4,540 sqft
1st Floor Area	2,114 sqft
Basement Area	1,784 sqft
Finished Basement	1,614 sqft
Unfinished Basement	170 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1950
Effective Year Built	Effective 2010
Architectural Style	Ranch
Exterior Material	Combination
Construction Type	Masonry / Concrete Block
Roof Material	Metal
Lot Area	13,928 sqft (0.32 acres)
Garage Type	Attached
Garage Area	642 sqft
Parking Spaces	2 Parking Spaces

Exterior Amenities

Porch	Porch
Porch Area	112 sqft
Deck Area	230 sqft
Patio Area	1,186 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0007218
Street Address	1418 MARIPOSA AVE
City	BOULDER
State	CO
Zip	80302-7844
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 3 BLK 2 BELLEVUE PARK REPLAT
Legal Range	70
Legal Township	1S
Legal Section	06
Legal Subdivision	BELLEVUE PARK REPLAT - BO
Legal Block	2
Legal Lot Number	3
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	2
Census Block	2011
Census Tract	12505

Owner

Source: Boulder County records, as of June 15, 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	1418 MARIPOSA AVE, BOULDER, CO 80302-7844
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Apr 12, 2021	Deed of Trust, Mortgage · Line of Credit INDEPENDENT BANK
Jun 22, 2018	Deed of Trust, Mortgage · Commercial Mortgage GUARANTY BANK & TRUST
Jun 5, 2020	Deed of Trust, Mortgage · Conventional Mortgage INDEPENDENT BANK
May 29, 2020	Loan Modification, Mortgage LAND TITLE GUARANTEE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Feb 26, 2008 · Amount on Record
Deed Sale	Feb 26, 2008 · Amount on Record
Prior Sale	Mar 9, 2005 · Amount on Record
Deed Document Number	20082912390
Prior Transfer Date	May 22, 2001
Prior Transfer Doc	0002152975
Record Updated	Sep 20, 2026

April 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	1418 MARIPOSA AVE, BOULDER, CO 80302-7844
Transaction Type	Mortgage
Record Updated	Apr 21, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003876205
Date	Apr 12, 2021
Instrument	3876205

Lender

Name	INDEPENDENT BANK
Type	Bank
Address	83030

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Apr 1, 2051

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

June 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	1418 MARIPOSA AVE, BOULDER, CO 80302-7844
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003662161
Date	Jun 22, 2018
Instrument	3662161

Lender

Name	GUARANTY BANK & TRUST
Type	Bank
Address	DENVER, CO 80217

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded
Term	120 Months
Due	Jun 15, 2028

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

June 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	1418 MARIPOSA AVE, BOULDER, CO 80302-7844
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	LAND TITLE GUARANTEE CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003789086
Date	Jun 5, 2020
Instrument	3789086

Lender

Name	INDEPENDENT BANK
Type	Bank
Address	MCKINNEY, TX 75069

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Jun 1, 2050

May 2020: Loan Modification, Mortgage

Document Type	Loan Modification
Jurisdiction	BOULDER CO
Property Address	1418 MARIPOSA AVE, BOULDER, CO 80302-7844
Document Number	0003789087
Instrument Date	May 29, 2020
Transaction Type	Mortgage
Record Updated	Jul 27, 2020
Title Company	LAND TITLE GUARANTEE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1418 MARIPOSA AVE BOULDER CO 803027844, BOULDER, CO 80302-7844

Tax Assessment & Valuation

Source: Boulder County assessment roll, as of June 15, 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		$252,056 (+8.8%) Land $142,807 Building $109,249	$3,706,700 (-) Land $2,100,100 Building $1,606,600
2025	$22,089.00 (+6.69%)	$231,669 (-4.83%) Land $131,256 Building $100,413	$3,706,700 (+2.02%) Land $2,100,100 Building $1,606,600
2023	$20,704.00 (+2.48%)	$243,438 (+11.9%) Land $135,414 Building $108,024	$3,633,400 (+16.08%) Land $2,021,100 Building $1,612,300
2022	$20,202.00	$217,549 Land $114,251 Building $103,298	$3,130,200 Land $1,643,900 Building $1,486,300

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
Nearest Special Flood Hazard Area	Zone AE, within 500 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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