445 S 42nd St, Boulder, CO 80305 Property Records

Boulder County property record for 445 S 42nd St, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	3 bd · 1.75 ba · 1,690 sqft · built 1956
Lot Size	0.159 acres (6,933 sqft)
Owner	Individual Name on File
Last Sale	$705,000 (Dec 2018)
Tax Bill	$5,295 (2025)
Deeds & Mortgages	Apr 2022 Mortgage Mar 2021 Mortgage + 3 more
Flood Zone	Zone X (minimal risk)
APN	`1577-05-4-24-021`

Property Details

APN / Parcel Number

Primary APN	`1577-05-4-24-021`
Alternative APNs	`R0012666` `0012666`

Interior

Bedrooms	3 Beds
Full Baths	1.75 Baths
Half Baths	1 Half Bath
Total Rooms	5 Rooms
Stories	1 Story
Building Area	1,690 sqft Living Area
Gross Area	2,700 sqft
1st Floor Area	1,150 sqft
Basement Area	1,350 sqft
Finished Basement	540 sqft
Unfinished Basement	810 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1956
Effective Year Built	Effective 1985
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Lot Area	6,933 sqft (0.159 acres)
Garage Type	Attached
Garage Area	200 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0012666
Street Address	445 S 42ND ST
City	BOULDER
State	CO
Zip	80305-5455
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 21 BLK 7 MARTIN ACRES 2
Legal Range	70
Legal Township	1S
Legal Section	05
Legal Subdivision	MARTIN ACRES 2 - BO
Legal Block	7
Legal Lot Number	21
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	3
Census Block	3008
Census Tract	12507

Owner

445 S 42nd St is owned and occupied by an individual who bought it in December 2018.

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

Owner of Record	Individual Name on File
Mailing Address	445 S 42ND ST, BOULDER, CO 80305-5455
Occupancy	Owner Occupied
Owner Type	Individual

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

Deeds, Mortgages & Sale History

Date	Document
Apr 5, 2022	Deed of Trust, Mortgage JPMORGAN CHASE BANK NA
Mar 2, 2021	Deed of Trust, Mortgage · Conventional Mortgage CHICAGO MORTGAGE SOLUTIONS CORP
Oct 18, 2019	Deed of Trust, Mortgage · Conventional Mortgage CMG MORTGAGE INC
Mar 21, 2019	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LNS
Dec 18, 2018	Warranty Deed, Transfer · Conventional Mortgage ELEVATIONS CU

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Dec 18, 2018 · Amount on File
Deed Sale	Dec 18, 2018 · Amount on File
Prior Sale	Jan 23, 1986 · Amount on File
Deed Document Number	20183690491
Record Updated	Oct 29, 2026

April 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	445 S 42ND ST, BOULDER, CO 80305-5455
Transaction Type	Mortgage
Record Updated	Apr 19, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	445 S 42ND ST, BOULDER, CO 80305-5455

Mortgage

Document Number	0003954742
Date	Apr 5, 2022
Instrument	3954742

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank
Address	BOULDER, CO 80302

Agreement

Amount	Amount on Record

March 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	445 S 42ND ST, BOULDER, CO 80305-5455
Transaction Type	Mortgage
Record Updated	Mar 10, 2021
Title Company	WFT NATIONAL TITLE, WFG NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003863651
Date	Mar 2, 2021
Instrument	3863651

Lender

Name	CHICAGO MORTGAGE SOLUTIONS CORP
Type	Mortgage Company
Address	DES PLAINES, IL 60018

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Mar 1, 2051

October 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	445 S 42ND ST, BOULDER, CO 80305-5455
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003743527
Date	Oct 18, 2019
Instrument	3743527

Lender

Name	CMG MORTGAGE INC
Type	Mortgage Company
Address	SAN RAMON, CA 94583

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Nov 1, 2049

March 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	445 S 42ND ST, BOULDER, CO 80305-5455
Document Number	0003704159
Instrument Date	Mar 21, 2019
Transaction Type	Mortgage
Record Updated	Apr 2, 2019
Title Company	PREMIUM TITLE AGENCY, PREMIUM TITLE AGCY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	445 S 42ND ST BOULDER CO 803055455, BOULDER, CO 80305-5455

Mortgage

Document Number	0003704159
Date	Mar 27, 2019
Instrument	3704159

Lender

Name	QUICKEN LNS
Type	Funding / Finance Company
Address	DETROIT, MI 48226-1906

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Mar 26, 2049

December 2018: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Dec 18, 2018
Property Address	445 S 42ND ST, BOULDER, CO 80305-5455
Document Number	0003690491
Instrument Date	Dec 17, 2018
Instrument	3690491
Transaction Type	Transfer
Record Updated	Dec 31, 2018
Title Company	LAND TITLE GUARANTEE

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$70.50
Amount Accuracy	Confirmed
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Sole Owner
Address	445 S 42ND ST BOULDER CO 803055455, BOULDER, CO 80305-5455

Mortgage

Document Number	3690492
Date	Dec 18, 2018
Instrument	3690492

Lender

Name	ELEVATIONS CU
Address	BROOMFIELD, CO 80021

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Dec 17, 2048

Tax Assessment & Valuation

The 2025 property tax bill for 445 S 42nd St was $5,295.

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		$55,665 (+0.23%) Land $32,599 Building $23,066	$888,600 (-) Land $549,400 Building $339,200
2025	$5,295.00	$55,538 Land $34,338 Building $21,200	$888,600 Land $549,400 Building $339,200
2023	$5,172.00 (+7.97%)	$63,577 (+25.19%) Land $40,234 Building $23,343	$948,900 (+29.86%) Land $600,500 Building $348,400
2022	$4,790.00	$50,783 Land $29,843 Building $20,940	$730,700 Land $429,400 Building $301,300

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

FEMA maps place 445 S 42nd St in Zone X, an area of minimal flood risk, though there have been 7 flood claims nearby since 1979.

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
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	6 in force
Nearby Flood Claims	7 (1979–2022)
Claims Outside the SFHA	5 of 7
Most Recent Claim	Jul 2022 · rainfall accumulation
Claims by Event	Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 5 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

Wildfire risk around 445 S 42nd St is low, with a 0.01% annual chance of 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 678 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
Verizon Fixed Wireless	300 / 20
LiveWireNet Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20

May also be available: AT&T.

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