A surveying standard jointly proposed by the American Land Title
Association and the American Congress on Surveying and Mapping that
incorporates elements of the boundary survey, mortgage survey, and
topographic survey. ALTA/ACSM surveys, frequently shortened to ALTA
surveys, are often required for real estate transactions.
The actual physical extent of property ownership, typically
witnessed by monuments or markers, such as (typically iron rods,
pipes or concrete monuments in the ground, but also tacks or blazes
in trees, piled stone corners or other types of monuments) are
measured, and a map, or plat, is drawn from the data.
A plot or map based on a survey of a parcel of land. Lines are drawn
inside it, indicating the location of roads and lots. Plats are
usually discussed back and forth between the developer and the
surveyor until they are agreed upon, at which point pins are driven
into the ground to mark the lot corners and curve ends, and the plat
is recorded. In some jurisdictions, the recording or filing of a
subdivision plat is highly regulated. The final map or plat becomes,
in effect, a contract between the developer and the city or county,
determining what can be built on the property and under what
(otherwise "lay-out" or "setting-out") The process of establishing
and marking the position and detailed layout of new structures such
as roads or buildings for subsequent construction. In this sense,
surveying may be regarded as a sub-discipline of civil engineering.
A survey that measures the elevation of points on a
particular piece of land, and presents them as contours on a plot.
Those surveys associated with the engineering design
(topographic, layout and as-built) often requiring geodetic
computations beyond normal civil engineering practice.
Boundary & Location Survey
A simple survey that generally determines land boundaries and
building locations. Boundary surveys are required by title companies
and lending institutions when they provide financing to show that
there are no structures encroaching on the property and that the
position of structures is generally within zoning and building code
One lot from a plat is drawn, with any easements and setbacks that
may be on it.
Foundation or Location Survey
The position of the house is measured before it is finished being
Physical or Final Survey
The finished house and driveway are measured, and all markers on the
boundary are indicated.
Proposals for a house or other building and driveway or parking lot
are added to a lot survey.