Legal Right of Way: Cadastral Polygons for Seattle with Feature Codes

Weekly updated cadastral data from the City of Seattle's geodatabase, displaying legal right-of-way and related land-use polygons. The layer contains 11 numeric feature codes, including lots, rights of way, alleys, easements, and water bodies, with a defined hierarchy for overlapping types. It is sourced from the CADASTRAL.LEGAL_ROW_PLGN_PV table and hosted on Data.gov.

Use Cases

• Map legal property boundaries and rights of way based on the defined polygon feature codes.
• Resolve spatial hierarchy conflicts for overlapping features based on the described assignment rules.
• Analyze land-use composition within a jurisdiction based on the categorized feature types (e.g., alleys, easements, lots).

Strengths

• Defined 11 specific feature codes (L_FEA_SYM) for clear polygon categorization.
• Weekly update frequency ensures relatively current data.
• Explicit hierarchy rule for resolving overlaps between alley and other right-of-way adjustment types.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The layer has a display scale limitation, not showing when zoomed out beyond 1:50,000.

Provenance

Source

City of Seattle

Collection Method

Extracted from the CADASTRAL.LEGAL_ROW_PLGN_PV geodatabase table.

Time Range

null

Freshness

Updated weekly.

Geography

Likely City of Seattle, Washington, USA.