830 20th St, Apt 306, Boulder, CO 80302 Property Records

Boulder County property record for 830 20th St, Apt 306, Boulder, CO 80302

Property Summary

Property Type	Condominium
Details	2 bd · 1 ba · 868 sqft · built 1963
Lot Size	0.001 acres (24 sqft)
Owner	2 Individual Names on File
Last Sale	$480,000 (Nov 2024)
Tax Bill	$2,974 (2025)
Deeds & Mortgages	May 2023 Sale
Flood Zone	Zone X (minimal risk)
APN	`1463-31-4-14-030`

Property Details

APN / Parcel Number

Primary APN	`1463-31-4-14-030`
Alternative APNs	`R0083196` `0083196`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	4 Rooms
Stories	1 Story
Building Area	868 sqft Living Area
1st Floor Area	868 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1963
Effective Year Built	Effective 1963
Architectural Style	Condo/Apartment
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Lot Area	24 sqft (0.001 acres)

Utilities, Heating & Cooling

Heating System	Hot Water

Location & Zoning

Account Number	R0083196
Street Address	830 20TH ST, 306
City	BOULDER
State	CO
Zip	80302-7744
Property Category	Residential
Property Type	Residential > Condominium / Townhouse > Condominium
Legal Description	UNIT 306 SAN MARCO SOUTH CONDOS & 3.28 % UND INT COMMON ELEMENTS
Legal Range	70
Legal Township	1N
Legal Section	31
Legal Subdivision	SAN MARCO SOUTH CONDOS - BO
Legal Block	2
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	2
Census Block	2013
Census Tract	12401

Owner

Source: Boulder County records · APN 1463-31-4-14-030

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 Individual Names on File
Mailing Address	4540 W 31ST AVE, DENVER, CO 80212-3020
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Nov 27, 2024 · Amount on Record
Deed Sale	Nov 27, 2024 · Amount on Record
Prior Sale	Aug 13, 1987 · Amount on Record
Deed Document Number	20244068705
Prior Transfer Date	Aug 12, 2010
Prior Transfer Doc	0003124570
Record Updated	Sep 20, 2026

May 2023: Deed, Transfer

Document Type	Deed
Jurisdiction	BOULDER CO
Recording Date	May 31, 2023
Property Address	830 20TH ST APT 306, 306, BOULDER, CO 80302-7744
Document Number	0004009070
Map Reference	MF 1071 DOC 346522
Instrument Date	May 30, 2023
Instrument	4009070
Transaction Type	Transfer
Record Updated	Jun 16, 2023

Transaction

Amount	Amount Recorded
Tax	$36.50
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	2560 GRAPE AVE, BOULDER, CO 80304-2834

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		$33,021 (+8.8%) Building $33,021	$485,600 (-) Building $485,600
2025	$2,974.00 (+21.44%)	$30,350 (-2.65%) Building $30,350	$485,600 (+4.36%) Building $485,600
2023	$2,449.00 (-12.85%)	$31,175 (+5.82%) Building $31,175	$465,303 (+9.77%) Building $465,303
2022	$2,810.00	$29,461 Building $29,461	$423,900 Building $423,900

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of October 14, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Claims	1 (2013)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides

Wildfire

Wildfire Risk	Low lower than 80% of the US · lower than 91% of Colorado
Wildfire Likelihood	0.02% annual chance
Exposure	None beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
Ayva Fixed Wireless	2,500 / 2,500
Lumen Technologies Fiber · DSL in parts of the area	2,000 / 1,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
Live Wire Networks Fixed Wireless	250 / 100
T-Mobile USA Fixed Wireless	100 / 20

May also be available: Magnolia Road Internet Cooperative.

Based on FCC filings for 481 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	CITY OF BOULDER serves 166,080 people
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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.