845 12th St Boulder, CO 80302 / 7520

Residence for Single Family

(UPDATED: 11/29/2025)
  • 5 Beds
  • 2 Baths
  • 4.130 square feet
Property Report

Information about property on 845 12th St, Boulder CO, 80302-7520. Find out owner contacts, building history, price, neighborhood at Homemetry Address Directory.

Property Details

At 845 12th Street, Boulder, Colorado there is a large single-family A-Frame home.

Facts

  • Built in 1908
  • Lot size 6,098 sqft
  • Floor size 4,130 sqft
  • Construction Masonry
  • Rooms 12
  • Bedrooms 5
  • Last remodel year 1989
  • Style A-Frame
  • Basement Basement (not specified)
  • Heating & Cooling
  • Heat type Hot Water
  • Exterior Home Features
  • Exterior walls Wood
  • Roof type Asphalt
  • Parking & Garage
  • Parking Detached Garage
  • Parking spaces 2
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Misc

  • Units 1

Listing info

  • Last sold Apr 1993 for $379,000

Householders and Tenants for 845 12th St, Boulder CO

Cost estimate history

YearTaxAssessmentMarket
2014 N/A $96,722 N/A
2013 $8,132 N/A $1,215,100
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Where is 845 12th St, Boulder CO located on map?

Building Permits

To date, we have no information about building permits in 2026
Feb 23, 2016
Description: Kitchen remodel of 100 sq.ft. scope of work includes associated meps, to include electrical wiring & new can lights, gas piping, and replacing of plumbing fixtures (only).
  • Valuation: $1,100,000
  • Client: Arnold Jacobson
  • Parcel #: #0007934
  • Permit #: PMT2016-00762
Nov 14, 2013
Description: Total tear off and reroof of existing residence with 22 squares of certainteed presidential tl shingles on roof pitch represented as 6/12.
  • Client: Arnold Jacobson
  • Parcel #: 0007934
  • Permit #: PMT2013-06434
Sep 6, 2011
Description: Electrical permit for 200 amp service change on single-family residence.
  • Client: Arnold Jacobson
  • Parcel #: 0007934
  • Permit #: PMT2011-03802
Jul 12, 2007
Description: Add new deck off second floor. 96 sf
  • Valuation: $183,300
  • Client: Victoria Johns
  • Parcel #: 0007934
  • Permit #: PMT2007-02888
Jun 11, 2004
Description: Construct new retaining with stairs as shown on attached plans.
  • Client: Arnold Jacobson
  • Parcel #: 0007934
  • Permit #: PMT2004-02236

12th St Fire Incident History

To date, we have no information about fire incidents in 2026
28 Dec 2019 Building fires
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
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
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
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

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

To date, we have no information about incidents registered in FEMA in 2026
29 Mar 2015 Unauthorized burning
Property Use —
Multifamily dwellings
11 Oct 2014 Outside rubbish, trash or waste fire
Property Use —
Sorority house, fraternity house
05 Mar 2014 Gas leak (natural gas or LPG)
Property Use —
Sorority house, fraternity house
15 Jan 2014 Gas leak (natural gas or LPG)
Property Use —
Street or road in commercial area

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FAQ about the house at 845 12 St, Boulder, CO

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