620 12th St Boulder, CO 80302 / 7517

Map

Residence for Single Family

(UPDATED: 07/29/2025)
  • 5 Beds
  • 4 Baths
  • 6.773 square feet
Property Report

Information about property on 620 12th St, Boulder CO, 80302-7517. Find out owner contacts, building history, price, neighborhood at Homemetry Address Directory.

Property Details

A single-family residence at 620 12th Street, Boulder, Colorado.

Facts

  • Built in 1917
  • Lot size 0,51 acres
  • Floor size 6,773 sqft
  • Construction Masonry
  • Rooms 10
  • Bedrooms 5
  • Last remodel year 1990
  • Basement Improved Basement (Finished)
  • Heating & Cooling
  • Heat type Hot Water
  • Exterior Home Features
  • Exterior material Cement concrete
  • Exterior walls Brick
  • Roof type Tile
  • Parking & Garage
  • Parking Mixed
  • Parking spaces 4

Misc

  • Units 1

Listing info

  • Last sold Jan 1985 for $515,000

Householders and Tenants for 620 12th St, Boulder CO

Possible residents contact details

Person Name Phone Number Additional Info
Jennifer C Siegel Age: 61
970-926-****
Residential status:
Homeowner
Job:
Clerical/White Collar
Kate Siege
Katherine O Siege Age: 37
303-447-****
Residential status:
Homeowner
Katherine O Siegel Age: 37
303-447-****
Lucas H Siegel Age: 34
970-926-****
Residential status:
Homeowner
Marcela Medinasanchez Age: 55
Martha Medina
Mo J Siegel Age: 75
970-926-****
Morris Siegel Age: 75
Residential status:
Homeowner
Job:
Clerical/White Collar

Cost estimate history

YearTaxAssessmentMarket
2014 N/A $168,680 N/A
2013 $14,183 N/A $2,119,100

Where is 620 12th St, Boulder CO located on map?

12th St Fire Incident History

To date, we have no information about fire incidents in 2025
28 Dec 2019 Building fires
1021 12 St, Boulder CO
Property Use —
Multifamily dwellings
Area of Origin —
Bathroom, checkroom, lavatory, locker room
First Ignition —
Electrical wire, cable insulation
Heat Source —
Spark, ember or flame from operating equipment
28 Jun 2018 Special outside fire, other
891 12th St, Boulder CO
Property Use —
Multifamily dwellings
Area of Origin —
Outside area, other
First Ignition —
Organic materials, other
Heat Source —
Hot or smoldering object, other
25 Oct 2015 Natural vegetation fire, other
1139 12 St, Boulder CO
Property Use —
Outside or special property, other
Area of Origin —
Outside area, other
First Ignition —
Decoration
Heat Source —
Flame/torch used for lighting
03 Oct 2008 Building fires
1146 12 St, Boulder CO
Property Use —
Sorority house, fraternity house
Area of Origin —
Egress/exit, other
First Ignition —
Flammable liquid/gas - in/from final container
Heat Source —
Heat source: other

View more

12 St Incidents registered in FEMA
(Federal Emergency Management Agency)

To date, we have no information about incidents registered in FEMA in 2025
29 Mar 2015 Unauthorized burning
1030 12 St, Boulder CO
Property Use —
Multifamily dwellings
11 Oct 2014 Outside rubbish, trash or waste fire
1139 12 St, Boulder CO
Property Use —
Sorority house, fraternity house
05 Mar 2014 Gas leak (natural gas or LPG)
1162 12th St, Boulder CO
Property Use —
Sorority house, fraternity house
15 Jan 2014 Gas leak (natural gas or LPG)
865 12 St, Boulder CO
Property Use —
Street or road in commercial area

View more

Properties Nearby

Street AddressResidens/Landlords
767 12 St, Boulder, CO 80302-7518
Single Family
  • 4 beds
  • 1.5 baths
  • 2,486 sqft
  • Built in 1927
 L Hagen, L L Wilson
800 12 St, Boulder, CO 80302-7521
Single Family
  • 4 beds
  • 2.5 baths
  • 2,730 sqft
  • Built in 1950
 Emily M Kelton, Margaret Schatz
844 12 St, Boulder, CO 80302-7521
Single Family Residential
  • 2 beds
  • 1 bath
  • 2,165 sqft
  • Built in 1920
 Alpine Hydroecology, Christopher Campbell Armstrong
845 12 St, Boulder, CO 80302-7520
Single Family Residential
  • 5 beds
  • 2 baths
  • 4,130 sqft
  • Built in 1908
 Arnie Jacobson, Arnold A Jacobson
855 12 St, Boulder, CO 80302-7520
Single Family Residential
  • 3 beds
  • 2 baths
  • 2,216 sqft
  • Built in 1950
 Lauren Fowler, Anna D Goodnow
927 12 St, Boulder, CO 80302-7208
Unspecified
  • 6 beds
  • 2 baths
  • 2,600 sqft
  • Built in 1922
 Jeffery Allen Arinder, Robert Anthony Brovege
955 12 St, Boulder, CO 80302-7480
Single Family Residential
  • 4 beds
  • 2 baths
  • 3,487 sqft
  • Built in 1939
 Little Gem Designs
969 12 St, Boulder, CO 80302-7208
Single Family Residential
  • 4 beds
  • 2 baths
  • Lot: 7,623 sqft
  • Built in 1937
 Carrie L Crawford, Heidi J Freiburger
1037 12 St, Boulder, CO 80302-7265
Multi-Family Home
  • 13 beds
  • 6 baths
  • Lot: 6,229 sqft
  • Built in 1895
 Anna Cristina Arguello, Benjamin Assini
1045 12 St, Boulder, CO 80302-7285
Multi Family
  • 11 beds
  • 6 baths
  • 5,058 sqft
  • Built in 1906
 Rachel Altman, Adrian Amodeo

12th Street

Houses for Sale on 12th Street (1)

Recently Sold Homes on 12th Street (6)

Recent rentals on 12th Street (8)

Boulder, CO

Houses for Sale on Boulder, CO (1104)

Recently Sold Homes on Boulder, CO (5000)

Houses for Rent on Boulder, CO (9)

Recent rentals on Boulder, CO (2073)

 

FAQ about the house at 620 12 St, Boulder, CO


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