TENTATIVE MAP PREPARATION
A tentative map usually shows the design of the proposed subdivision and the existing topographic conditions.
Design includes street alignment, proposed grades and widths, alignment and widths of easements and rights-
of-way for drainage and sanitary sewers, and minimum lot area and width. To the extent possible, the design of
the subdivision must also provide for future passive (i.e., natural) heating and cooling. This requirement does
not apply to condominiums converted from existing structures. Many jurisdictions require that a tentative map
be based upon an accurate or final survey by a registered civil engineer, licensed land surveyor, or professional
planner. (The survey for a final map must be the product of either a registered civil engineer or licensed
surveyor.)
The local subdivision ordinance usually stipulates that the tentative map contain:
1. A legal description sufficient to define the boundaries of the proposed tract;
2. The locations, names, and existing widths of all adjoining highways, streets, and ways;
3. The proposed use of the property;
4. The width and proposed grades of all highways, streets and ways within the proposed subdivision;
5. The width and approximate location of all existing and proposed easements for roads, drainage, sewers and
other public utility purposes;
6. The tentative lot layout and dimensions of each lot;
7. The approximate locations of all areas subject to inundations or storm water overflow and the locations,
widths, and direction of flow of all watercourses;
8. The source of water supply;
9. The proposed method of sewage disposal;
10. The proposed public areas, if any; and
11. The approximate contours when topography controls street layout.