Name: Building Footprints

Display Field: COMMENTS

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: WHAT: This dataset contains polygon building footprints covering Mesa County, Colorado, as they existed in spring 2015. Each polygon represents a structure identified from aerial imagery. The dataset is countywide in extent and is a single point-in-time snapshot — it has not been updated since the original delivery and does not reflect development, demolition, or other changes that have occurred since 2015.SOURCE & METHODOLOGY: Source footprints were produced by an aerial photography contractor hired by Mesa County, who applied a digital classification model to spring 2015 aerial imagery to identify and extract building footprints. The completed dataset was delivered to Mesa County, who in turn provided it to the City of Grand Junction as a one-time hand-off. No further processing, QA, or review was performed by the City before publication.KEY ATTRIBUTES: TYPE (describes the type of building the polygon represents) and SQ_FT (square footage of the footprint) are the only two fields actively populated and intended for use. Other fields in the schema exist but are largely empty or unreliable and should not be queried or relied upon.UPDATE CYCLE: Not on a recurring update cycle. The dataset was a one-time delivery from Mesa County in 2015. Any future updates would originate from Mesa County, not the City of Grand Junction.KNOWN LIMITATIONS: This dataset reflects 2015 conditions and does not include buildings constructed, modified, or demolished since spring 2015 — a material limitation given the age of the data. The footprints were extracted via automated digital classification from aerial imagery, and positional accuracy was not independently verified. The classification model produced false positives in some cases — for example, parked semi-trucks and trailers were sometimes captured as building footprints. Most attribute fields beyond TYPE and SQ_FT are unpopulated or unreliable. Because of the age and known errors, users should contact the GIS Division before relying on this data for any decision-making purpose.CONTACT: City of Grand Junction GIS Division. For data questions or to report errors, email gis@gjcity.org. Because this dataset originated with Mesa County, questions about underlying methodology or any potential refresh may need to be directed there.

Service Item Id: b9f9204d35224c2abf209dfcfdb06f17

Copyright Text: Source data: Mesa County, Colorado, produced by an aerial photography contractor under contract to Mesa County. Provided to the City of Grand Junction as a one-time delivery and re-published by the City of Grand Junction GIS Division for local reference.

Default Visibility: false

Max Result Window: N/A

Max Record Count: 2000

Standard Max Record Count No Geometry: 32000

Max Record Count Factor: 1

Standard MaxRecord Count: 4000

Tile Max Record Count: 4000

MaxSelectionCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 10000.0

Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: 668467.3689000001
YMin: 4263338.820599999
XMax: 805513.5220999997
YMax: 4362788.0967999995
Spatial Reference: 32612  (32612)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: Type
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: Barn
  Label: Barn
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [0, 0, 0, 0]
  Outline:
  Style: esriSLSSolid
  Color: [137, 90, 68, 255]
  Width: 1
• Value: Commercial
  Label: Commercial
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [0, 0, 0, 0]
  Outline:
  Style: esriSLSSolid
  Color: [235, 89, 235, 255]
  Width: 1
• Value: Mobile Home or Trailer
  Label: Mobile Home or Trailer
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [0, 0, 0, 0]
  Outline:
  Style: esriSLSSolid
  Color: [205, 170, 102, 255]
  Width: 1
• Value: Out Building
  Label: Out Building
  Description: N/A
  Symbol:
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  Color: [0, 0, 0, 0]
  Outline:
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• Value: Public
  Label: Public
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• Value: Residential
  Label: Residential
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [0, 0, 0, 0]
  Outline:
  Style: esriSLSSolid
  Color: [130, 130, 130, 255]
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• Value: Unknown
  Label: Unknown
  Description: N/A
  Symbol:
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  Color: [0, 0, 0, 0]
  Outline:
  Style: esriSLSSolid
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  Width: 1
Transparency: 0
Labeling Info:

Feature Draw Order:

N/A

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports Result Pagination Token: false
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: true
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: true
Supports Sql Format: false
Supports Query Analytic: true
Supports Query With Cache Hint: false
Supports Query With Current User: true
Supports Query With Result Type: true

HasZ: false

HasM: false

Has Attachments: false

Has Last Edit Time: false

HTML Popup Type: esriServerHTMLPopupTypeNone

Type ID Field: N/A

Fields:

• OBJECTID ( nullable: false, alias: OBJECTID, type: esriFieldTypeOID )
• Type ( nullable: true, length: 30, alias: Building Type, type: esriFieldTypeString )
• GlobalID ( nullable: false, length: 38, alias: GlobalID, type: esriFieldTypeGlobalID )
• Shape ( nullable: true, alias: Shape, type: esriFieldTypeGeometry )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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