Zoning Glossary

Lot Split

A lot split is the division of a single legally described parcel of land into two or more separate, independently recorded parcels. In the context of contemporary housing policy, lot splitting typically refers to dividing single-family residential parcels in established neighborhoods — a form of urban infill that adds developable land without expanding infrastructure to new areas. Unlike building an accessory dwelling unit, a lot split creates fully independent parcels that can each be sold, financed, or developed separately.

Land Use

In Practice

The availability of residential lot splitting depends on state law and local subdivision ordinances. California and Oregon have enacted statewide lot split laws with ministerial approval requirements. In most other states, lot splitting is governed by local subdivision rules that vary widely. Completing a lot split requires filing an application, having the property surveyed, and recording the new parcel map with the county recorder — after which each resulting parcel receives its own assessor's parcel number.

Source: Lot Splitting Laws: Which States Allow It? · Verified April 5, 2026

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Source: PropertyZoned Zoning Guide — Lot Splitting Laws: Which States Allow It?. Last verified April 5, 2026.

Last updated: April 5, 2026
Lot Split — Zoning Term Definition | PropertyZoned