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Countywide Building Outlines – 2014 Update – Public Domain Release

November 1, 2016 – this data is now public

The Countywide building outline dataset contains building outlines (over 3,000,000) for all buildings in Los Angeles County, including building height, building area, and the parcel number (also known as building footprints).  This data was captured from stereo imagery as part of the LAR-IAC2 Project (2008 acquisition) and was updated as part of the LARIAC4 (2014) imagery acquisition.

There are a number of sources.  All buildings were updated to include changes between 2008 and 2014.

  • City of Palmdale – building outlines from the LAR-IAC (2006) imagery – derived from orthogonal imagery.
  • City of Pasadena – building outlines from earlier imagery, updated with LAR-IAC2 (2008) imagery in 2008
  • City of Glendale – building outlines from earlier imagery, updated with LAR-IAC2 (2008) imagery in 2008
  • City of Los Angeles – building outlines from LAR-IAC2 (2008), stereo generated, for all buildings > 64 square feet
  • The rest of the County – building outlines from LAR-IAC2 (2008), stereo generated, for all buildings > 400 square feet

Most of the buildings in this dataset were generated using stereo imagery.  This means that the person capturing the buildings actually saw them in 3-D, and therefore was able to more accurately capture the location of the roof line, since this method eliminated the impacts of building lean (where the height of the building impacts its apparent location).  Basically – this is the most accurate method for capturing building outlines.  In many cases the location is more accurate than our aerial photography and parcel boundaries.

Download

Click here to download – note this is a 1 Gb download

Link to LARIAC2 Buildings (2008) – Click here to access

Zip file Structure

buildings_folderstructre

Zip file structure

This file contains a file geodatabase which has two feature classes:

  • LARIAC4_BUILDINGS_2014 – this is the current set of buildings as of 2014
  • LARIAC2_BUILDINGS_DELETED_2014 – these are the buildings from LARIAC2 that have been modified or deleted.  These can be for change analysis and detection.

buildings_geodatabase

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Data Field Descriptions

Current Building Data Fields

–CODE (Building or courtyard)
–BLD_ID –Unique ID
–HEIGHT (Height in feet)
–Elevation (Ground elevation)
–Area (Building roofline in Square Feet)
–Source (which provenance)
–Date (data acquired)
–AIN (Parcel ID)
–Status (Unchanged, New, Replacement, Modified)
–OLD_BLD_ID (connects to the Deleted Buildings BLD_ID field)
As an addition, LARIAC requested that the parcel ID number (AIN) as of July 2014 be assigned to each building based upon the building centroid.  We have attached the information from the Assessor's Local Roll based upon this join, which will provide address information as well as many other attributes such as use type, etc.  This is a one-time effort - it can be updated by participants at their leisure later.

Deleted Building Data Structure
–CODE (Building or courtyard)
–BLD_ID –Unique ID
–HEIGHT (Height in feet)
–Elevation (Ground elevation)
–Area (Building roofline in Square Feet)
–Source (which provenance)
–Date (data acquired)
–AIN (Parcel ID)
–Status (Destroyed, Modified)
–NEW_BLD_ID (connects to the Current Buildings BLD_ID field)


GIS Source Information
Database Name: eGIS_Infrastructure
Feature Class Name: #NONE#
Feature Dataset Name (if applicable):
Reference Date: 2014
Accuracy: Other
Update Frequency: Other
Access Constraints:None

Contact Information
Mark Greninger
Chief Data Officer
County of Los Angeles
Chief Information Office
350 S Figueroa Street
Suite 188
Los Angeles, CA 90071
mgreninger@cio.lacounty.gov
(213) 253-5624

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