Lot Line Adjustment

A minor boundary change between two or more adjacent parcels that adjusts the shared lot line without creating any new lots, typically processed as a ministerial or simplified approval.

What is a Lot Line Adjustment?

A lot line adjustment (LLA) is a modification to the boundary between two or more adjacent parcels that does not create any additional lots. It simply shifts the shared property line to change the size or shape of the existing parcels. Because no new lots are created, lot line adjustments are typically subject to a simplified approval process compared to full subdivisions.

When Lot Line Adjustments Are Used

LLAs are commonly used to: consolidate portions of adjacent parcels to create a more suitable development site, resolve encroachments where improvements cross property lines, adjust lot dimensions to meet zoning requirements (such as minimum lot size or frontage), and accommodate access or utility easement needs. They are a practical tool for resolving property boundary issues without the complexity of a full subdivision.

Approval Process

In California and many other states, lot line adjustments are processed ministerially (without discretionary review) as long as the resulting parcels comply with applicable zoning and building standards. The property owners submit a survey showing the proposed adjusted lot lines, and the planning department verifies compliance. Once approved, the adjusted boundary is recorded with the county.

Limitations

Lot line adjustments cannot create new parcels or change the total number of lots. They also cannot be used to circumvent the subdivision process. Some jurisdictions impose additional limitations, such as restricting the number of lot line adjustments a property can undergo within a specified period.