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City of San Mateo Municipal Code.


(a) Every dwelling hereafter erected or structurally altered to create one or more additional dwelling units shall be on a parcel having the following minimum development standards:

Minimum Parcel Area (Square Feet) Minimum Parcel Width (Lineal Feet) Minimum Parcel Area/D.U. (Square Feet)
4,000* 40* 2,200*
5,000 50 2,500
8,000 65 2,000
10,000 80 1,000
15,000 100 870
* These standards are permitted only if a parcel is lying northeasterly of El Camino Real and was recorded prior to March 3, 1947.

(b) A larger minimum parcel for special uses shall be required by the Planning Commission upon a finding that the minimum parcel does not adequately accommodate the proposed special use.