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City of San Mateo Municipal Code.

27.28.016 MINIMUM DEVELOPMENT STANDARDS.

Every dwelling hereafter erected or structurally altered to create one or more additional dwelling units shall meet the following minimum development standards:

Minimum Parcel Area1 (Square Feet) Minimum Parcel Width(Lineal Feet) Minimum Parcel Area/DU (Square Feet)
4,4002 40 2,2002
5,000 50 2,500
8,000 65 2,000
10,000 80 1,000
12,000 100 900
15,000 100 870

Table Notes

1 A larger minimum lot for special uses may be required by the Planning Commission on a finding that the minimum lot does not adequately accommodate the proposed special uses.

2 Only applies to parcels that lie northeasterly of El Camino Real and have been recorded prior to March 3, 1947.