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Title 21 — PLATS AND SUBDIVISIONS

Chapter 21.30 — LOT LINE ADJUSTMENTS

Mill Valley Municipal Code · 2026-09 edition · updated 2026-10-02 · Mill Valley

§ 21.30.010. Lot line adjustment defined.

"Lot line adjustment" means an adjustment or realignment of a boundary line and a transfer of real property between two adjacent parcels when the adjustment or realignment does not result in the creation of any additional parcels or potential building sites than originally existed.

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§ 21.30.020. Requirements for lot line adjustments.

Requirements for lot line adjustments shall be as required for subdivisions requiring parcel maps, as specified in Chapters 21.20 and 21.28, except for the following:

A. The tentative map need only show data related to the proposed adjustment or realignment.
The Director of Planning and Building may waive any or all of the tentative map
requirements specified in Chapter 21.20.

B. The City Engineer may waive the requirement for a parcel map and may require a record
of survey; or may waive the filing of a parcel map and record of survey, if he or she
determines the adjusted boundary line is already adequately monumented of record or
easily located due to existing monumentation of record or other physical circumstances as
may be determined by the City Engineer. If a parcel map and record of survey is waived, a
plat map and legal descriptions of the revised parcels suitable to the City Engineer shall be
prepared and recorded with the County Recorder. Such recordation shall occur only with
the actual transfer of real property proposed by the lot line adjustment.

C. Written application for waivers as authorized by this section shall state in detail the basis
of any waiver requested.

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§ 21.30.030. Action on lot line adjustments.

Applications for lot line adjustments shall be considered by the Zoning Administrator if:

A. The parcels resulting from the adjustment or realignment conform with all requirements of the Zoning Ordinance as codified in Title 20; or, if either of the parcels is already nonconforming in terms of minimum width and/or area, the nonconformity is not increased by the adjustment or realignment; and

B. The parcels resulting from the adjustment or realignment conform with all requirements of the Subdivision Ordinance as codified in Title 21.

If either conditions in subsection A or B of this section are not met, the lot line adjustment shall

be processed as specified in Chapter 21.36.

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§ 21.30.040. Filing fee.

At the time of filing an application for a lot line adjustment, the property owner(s) shall pay a filing fee in an amount established by resolution adopted by the City Council.

Exceptions & meaning →

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