345 S 36th St, Boulder, CO 80305 Property Records

Boulder County property record for 345 S 36th St, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.25 ba · 1,323 sqft · built 1956
Lot Size	0.213 acres (9,273 sqft)
Owner	2 Individual Names on File
Last Sale	$950,000 (Aug 2023)
Tax Bill	$5,153 (2025)
Deeds & Mortgages	May 2026 Mortgage Aug 2023 Sale & Mortgage + 1 more
Flood Zone	Zone X (moderate risk)
APN	`1577-05-3-35-015`

Property Details

APN / Parcel Number

Primary APN	`1577-05-3-35-015`
Alternative APNs	`R0014434` `0014434`

Interior

Bedrooms	3 Beds
Full Baths	2.25 Baths
Half Baths	1 Half Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,323 sqft Living Area
Gross Area	1,477 sqft
1st Floor Area	1,323 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1956
Effective Year Built	Effective 1980
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Lot Area	9,273 sqft (0.213 acres)
Garage Type	Attached
Garage Area	154 sqft
Parking Spaces	1 Parking Space
Porch	Porch
Porch Area	119 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0014434
Street Address	345 S 36TH ST
City	BOULDER
State	CO
Zip	80305-5467
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 15 BLK 19 HIGHLAND PARK 4
Legal Range	70
Legal Township	1S
Legal Section	05
Legal Subdivision	HIGHLAND PARK 4 - BO
Legal Block	19
Legal Lot Number	15
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	3
Census Block	3003
Census Tract	12507

Owner

345 S 36th St is owned and occupied by two individuals who bought it in August 2023.

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

Owner of Record	2 Individual Names on File
Mailing Address	345 S 36TH ST, BOULDER, CO 80305-5467
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
May 14, 2026	Deed of Trust, Mortgage · Balloon Mortgage ENTRUST FEDERAL CREDIT UNION
Aug 1, 2023	Warranty Deed, Transfer · Conventional Mortgage PREMIER MEMBERS CU
Aug 1, 2017	Quit Claim Deed, Transfer Quitclaim

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 1, 2023 · Amount on File
Deed Sale	Aug 1, 2023 · Amount on File
Prior Sale	May 18, 1971 · Amount on File
Deed Document Number	20234016611
Prior Transfer Date	Jul 26, 2017
Prior Transfer Doc	0003606481
Record Updated	Oct 29, 2026

May 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Recording Date	May 14, 2026
Property Address	345 S 36TH ST, BOULDER, CO 80305-5467
Document Number	0004131947
Instrument Date	May 8, 2026
Instrument	20264131947
Transaction Type	Mortgage
Record Updated	Jul 12, 2026
Title Company	NONE LISTED ON DOCUMENT

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	345 S 36TH ST, BOULDER, CO 80305-5467

Mortgage

Document Number	0004131947,
Date	May 14, 2026
Instrument	20264131947

Lender

Name	ENTRUST FEDERAL CREDIT UNION

Agreement

Type	Balloon Mortgage
Amount	Amount on Record
Term	180 Months
Due	Jun 1, 2041

Interest

Rate Type	Balloon
Rate	5.74%
Initial Type	Balloon
Max Rate	-1%

August 2023: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Aug 1, 2023
Property Address	345 S 36TH ST, BOULDER, CO 80305-5467
Document Number	0004016611
Instrument Date	Jul 31, 2023
Instrument	4016611
Transaction Type	Transfer
Record Updated	Aug 24, 2023
Title Company	LAND TITLE GUARANTY COMPANY IN, LAND TITLE GUARANTEE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$95.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	345 S 36TH ST, BOULDER, CO 80305-5467

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	345 S 36TH ST, BOULDER, CO 80305-5467

Mortgage

Document Number	0004016612
Date	Aug 1, 2023
Instrument	4016612

Lender

Name	PREMIER MEMBERS CU
Type	Credit Union

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Aug 1, 2053

Interest

August 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	BOULDER CO
Recording Date	Aug 1, 2017
Property Address	345 S 36TH ST, BOULDER, CO 80305-5467
Document Number	0003606481
Instrument Date	Jul 26, 2017
Instrument	3606481
Transaction Type	Transfer
Record Updated	Aug 15, 2017

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	345 S 36TH ST BOULDER CO 803055467, BOULDER, CO 80305-5467

Tax Assessment & Valuation

The 2025 property tax bill for 345 S 36th St was $5,153.

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		$54,046 (-0.01%) Land $38,440 Building $15,606	$864,800 (-) Land $635,300 Building $229,500
2025	$5,153.00	$54,050 Land $39,706 Building $14,344	$864,800 Land $635,300 Building $229,500
2023	$4,418.00 (+15.65%)	$61,553 (+28%) Land $46,532 Building $15,021	$918,700 (+32.78%) Land $694,500 Building $224,200
2022	$3,820.00	$48,087 Land $34,514 Building $13,573	$691,900 Land $496,600 Building $195,300

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 345 S 36th St in Zone X, an area of moderate flood risk, within 500 ft of a high-risk flood zone.

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 500 ft
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 345 S 36th St is moderate, ranking above 44% of the US, with a 0.1% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Moderate above 44% of the US · lower than 73% of Colorado
Wildfire Likelihood	0.1% 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 515 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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