305 18th St, Boulder, CO 80302 Property Records

Boulder County property record for 305 18th St, Boulder, CO 80302 · Last verified June 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	4 Beds
Bathrooms	2.25 Baths
Year Built	Built 1988
Square Footage	2,514 sqft Living Area
Lot Size	11,693 sqft (0.268 acres)
Occupancy	Owner Occupied
Last Sale	$951,800 (2014)
Tax Bill	$11,683.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`1577-06-2-15-009`
Alternative APNs	`R0003728` `0003728`

Interior

Bedrooms	4 Beds
Full Baths	2.25 Baths
Partial Baths	2 Partial Baths
Total Rooms	8 Rooms
Building Area	2,514 sqft Living Area
1st Floor	2,072 sqft 1st Floor
Upper Floors	442 sqft Upper Floors
Stories	2 Stories
Interior Structure	Wallboard/Drywall Interior Structure

Exterior

Year Built	Built 1956
Effective Year Built	Effective 1988
Exterior Material	Brick Veneer Exterior
Construction Type	Masonry/Concrete Masonry Units (CMUs) Construction
Roof Material	Asphalt Roof
Lot Area	11,693 sqft (0.268 acres)
Parking Spaces	1 Parking Spaces
Garage Type	Detached Garage
Garage Area	384 sqft Garage
Porch	Porch
Porch Area	176 sqft Porch

Utilities and HVAC

Cooling System	Central Cooling
Heating System	Forced Air with Air Conditioning Heating

Location & Zoning

Account Number	R0003728
Street Address	305 18TH ST
City	BOULDER
State	CO
Zip	80302-8005
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	E 92.75 FT LOTS 13 & 14 & E 92.75 FT OF S 32.5 FT LOT 12 BLK 13 INTERURBAN PARK
Legal Range	70
Legal Township	1S
Legal Section	06
Legal Subdivision	INTERURBAN PARK - BO
Legal Block	13
Legal Lot Number	12
Jurisdiction	BOULDER CO
Minor Civil Division	BOULDER
Census Blockgroup	1
Census Block	1022
Census Tract	12505

Owner

Source: Boulder County records · APN 1577-06-2-15-009

Assessment roll updated June 15, 2026 · Last verified June 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individuals Owners
Mailing Address	305 18TH ST, BOULDER, CO 80302-8005
Occupancy	Owner Occupied
Owner Type	Owner is an Individual, Couple or Unincorporated Entity
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Known Transactions	Last Sale Amount on Dec 08, 2014 Deed Sale Price on Dec 08, 2014 Prior Sale Amount on Aug 16, 1983
Deed Doc Number	20143416951
Record Refreshed	Sep 20, 2026

January 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	305 18TH ST, BOULDER, CO 80302-8005
Transaction Type	Mortgage
Record Updated	Feb 09, 2021
Title Company	PRESTIGE TITLE & ESCROW

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003850913
Date	Jan 14, 2021
Instrument	3850913

Lender

Name	CARDINAL FINANCIAL COMPANY LP
Type	Mortgage Company
Address	CHARLOTTE, NC 28273

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	181 Months
Due	Feb 01, 2036

Tax Assessment & Valuation

Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 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

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.

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$133,314 (+8.8%) Land $81,994 Building $51,320	$1,960,500 (-) Land $1,205,800 Building $754,700
2025	$11,683.00 (+12.35%)	$122,532 (-1.27%) Land $75,363 Building $47,169	$1,960,500 (+5.84%) Land $1,205,800 Building $754,700
2023	$10,399.00 (+5.98%)	$124,104 (+17.46%) Land $76,789 Building $47,315	$1,852,300 (+21.84%) Land $1,146,100 Building $706,200
2022	$9,812.00	$105,660 Land $62,911 Building $42,749	$1,520,300 Land $905,200 Building $615,100