515 S 45th St, Boulder, CO 80305 Property Records

Boulder County property record for 515 S 45th St, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	3 bd · 1.5 ba · 1,014 sqft · built 1958
Lot Size	0.162 acres (7,055 sqft)
Owner	Company Name on Record
Last Sale	$576,000 (Dec 2019)
Tax Bill	$5,397 (2025)
Deeds & Mortgages	Oct 2021 Transfer Oct 2020 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`1577-08-1-03-035`

Property Details

APN / Parcel Number

Primary APN	`1577-08-1-03-035`
Alternative APNs	`R0010725` `0010725`

Interior

Bedrooms	3 Beds
Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	5 Rooms
Stories	1 Story
Building Area	1,014 sqft Living Area
Gross Area	1,300 sqft
1st Floor Area	1,014 sqft
Interior Walls	Plaster

Exterior

Year Built	Built 1958
Effective Year Built	Effective 2001
Architectural Style	Ranch
Exterior Material	Combination
Construction Type	Masonry / Concrete Block
Lot Area	7,055 sqft (0.162 acres)
Garage Type	Attached
Garage Area	286 sqft
Parking Spaces	1 Parking Space
Patio Area	216 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0010725
Street Address	515 S 45TH ST
City	BOULDER
State	CO
Zip	80305-6049
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 35 BLK 3 MARTIN ACRES 3
Legal Range	70
Legal Township	1S
Legal Section	05
Legal Subdivision	MARTIN ACRES 3 - BO
Legal Block	3
Legal Lot Number	35
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	3
Census Block	3001
Census Tract	12508

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	Company Name on Record
Mailing Address	1942 BROADWAY, 314C, BOULDER, CO 80302-5233
Owner Type	Company

Deeds, Mortgages & Sale History

Date	Document
Oct 27, 2021	Quit Claim Deed, Transfer Quitclaim
Oct 1, 2020	Quit Claim Deed, Transfer · Conventional Mortgage GUARANTEED RATE INC
Dec 16, 2019	Warranty Deed, Transfer FIRST AMERICAN TITLE
Jun 25, 2019	Warranty Deed, Transfer · Line of Credit ZEPHYR INVESTMENTS LLC

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Dec 16, 2019 · Amount on Record
Deed Sale	Dec 16, 2019 · Amount on Record
Prior Sale	Jun 25, 2019 · Amount on Record
Deed Document Number	20193754936
Last Transfer Date	Oct 13, 2021
Transfer Doc	0003924096
Record Updated	Sep 20, 2026

October 2021: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	BOULDER CO
Recording Date	Oct 27, 2021
Property Address	515 S 45TH ST, BOULDER, CO 80305-6049
Document Number	0003924096
Instrument Date	Oct 13, 2021
Instrument	3924096
Transaction Type	Transfer
Record Updated	Nov 16, 2021

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name
Address	1450 NONVOOD AVE, 1450, BOULDER, CO 80304

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1942 BROADWAY STE 314C, 314C, BOULDER, CO 80302-5233

October 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	BOULDER CO
Recording Date	Oct 1, 2020
Property Address	515 S 45TH ST, BOULDER, CO 80305-6049
Document Number	0003820508
Instrument Date	Sep 29, 2020
Instrument	3820508
Transaction Type	Transfer
Record Updated	Mar 31, 2022

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	515 S 45TH ST, BOULDER, CO 80305-6049

Mortgage

Document Number	0003820509
Date	Oct 1, 2020
Instrument	3820509

Lender

Name	GUARANTEED RATE INC
Type	Mortgage Company

Agreement

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

December 2019: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Dec 16, 2019
Property Address	515 S 45TH ST, BOULDER, CO 80305-6049
Document Number	0003754936
Instrument Date	Dec 13, 2019
Instrument	3754936
Transaction Type	Transfer
Record Updated	Dec 30, 2019
Title Company	FIRST AMERICAN TITLE

Transaction

Amount	Amount Recorded
Tax	$57.60
Amount Accuracy	Confirmed
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	1942 BROADWAY #314C BOULDER CO 803025233, 314C, BOULDER, CO 80302-5233

June 2019: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Jun 25, 2019
Property Address	515 S 45TH ST, BOULDER, CO 80305-6049
Document Number	0003720350
Instrument Date	Jun 21, 2019
Instrument	3720350
Transaction Type	Transfer
Record Updated	Jul 2, 2019
Title Company	FIRST AMERICAN TITLE

Transaction

Amount	Amount Recorded
Loan-to-Value (LTV)	LTV on Record
Tax	$49.00
Amount Accuracy	Confirmed
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	8849 FOXFIRE ST FIRESTONE CO 805047822, FIRESTONE, CO 80504-7822
Investor	Possibly a Property Investor

Mortgage

Document Number	3720352
Date	Jun 25, 2019
Instrument	3720352

Lender

Name	ZEPHYR INVESTMENTS LLC
Type	Bank
Address	LAKEWOOD, CO 80228

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	12 Months
Due	Jun 24, 2020

Interest

Rate Type	Adjustable Rate
Rate	14%

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		$60,669 (+8.8%) Land $32,123 Building $28,546	$892,200 (-) Land $472,400 Building $419,800
2025	$5,397.00 (+3.13%)	$55,763 (-12.07%) Land $29,525 Building $26,238	$892,200 (-5.74%) Land $472,400 Building $419,800
2023	$5,233.00 (+35.99%)	$63,416 (+56.08%) Land $34,894 Building $28,522	$946,500 (+61.91%) Land $520,800 Building $425,700
2022	$3,848.00	$40,630 Land $25,979 Building $14,651	$584,600 Land $373,800 Building $210,800

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
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	5 in force

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 67% of the US · lower than 84% of Colorado
Wildfire Likelihood	0.04% annual chance
Exposure	Indirect within 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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