Practical spatial questions

Land & Titles

• How to plot a land title technical description

  A plot turns a list of boundary calls into a shape you can inspect. Start with the source document, follow the lines in order, and treat any mismatch as a question to investigate.

• How to read bearings and distances on a land title

  Each boundary call gives a direction and a length from one point to the next. Read one line at a time before trying to understand the full parcel.

• Why a technical description may not close

  A parcel plot closes when its last boundary line returns to its starting point. An open plot is a signal to review the input and source, not a verdict on the document.

Tax Mapping & Property Administration

• How to digitize cadastral and tax maps

  Digitizing a paper map takes more than tracing lines. The result needs a known source, coordinate reference, identifiers, and a review path for uncertain boundaries.

• RPVARA and digital tax mapping

  The Real Property Valuation and Assessment Reform Act concerns valuation standards and property information. For an LGU, reliable parcel links and records are useful groundwork for digital workflows.

• What is tax mapping in a Philippine LGU?

  Tax mapping gives an assessor's office a geographic index to the properties it administers. Its usefulness depends on keeping map features and assessment records linked as changes occur.

Households, Census & Local Data

• Barangay household information systems

  A barangay household information system helps authorized workers find and maintain local records. Its value comes from accuracy, clear responsibilities, and respect for residents' data.

• Household profiling systems for LGUs

  A household profile is useful when an LGU can maintain it responsibly and use it for a defined service or planning purpose. A large form alone is not a working system.

• Why LGUs maintain local household data

  Local programs need a picture of who lives where and which needs are changing. Reliable household information can help, provided collection and use stay tied to a legitimate purpose.

Coordinates & map data

Why coordinate systems and zones matter

Confirm the datum and zone before converting coordinates.

How to read GeoJSON coordinates

Standard GeoJSON uses WGS 84 longitude, then latitude.