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The
primary purpose of a
subdivision plat is to take a
large parcel of land and divide it
into smaller parcels of land. The
creation of a subdivision usually
takes place under the jurisdiction
of a local agency, which will have
a review process and a set of
guidelines to be met. The
surveyor's involvement in this
process begins with a boundary
survey of the overall parcel to
ensure that design elements and
lot creation occurs entirely
within the boundaries of the
parcel. Depending on the nature
and size of the subdivision, the
surveyor may also be called on to
provide a topographic survey,
improvement survey plat, ALTA
survey, or other survey. On a
large subdivision, some of this
information may be given to a
civil engineer, who will create
grading plans, storm drainage
plans, waterline plans, sanitary
sewer plans, and street plans. In
the preparation of a residential
subdivision, the surveyor will be
working in cooperation with a
civil engineer to balance design
considerations with the boundary
issues (including dedication of
public rights-of-way for streets
and creation of easements for
utilities or other purposes).
After the design and approval of a
subdivision plat, the surveyor may
also be involved in the many
aspects of construction surveying
for the development of the land.
For
smaller scale subdivision plats
(for example, taking an existing
lot and dividing it into two lots,
or a replat), the surveyor's
function is more direct. The
surveyor is then working more
closely with the landowner, as the
development phases probably
occurred during the initial
subdivision process. Most of the
items to be addressed by a minor
subdivision or replat are issues
of ownership.
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