Crosstown Surveyors, Inc.


American Land Title Association (ALTA)

ALTA/ACSM survey: a surveying standard jointly proposed by the American  Land Title Association and the American Congress on Surveying &  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 

As-Built Surveys

As-Built Survey: a survey conducted at the completion of a construction  project to verify, that the work authorized was completed to the    specifications and details set on the Construction/Engineering Plans or Plot Plans .  This usually involves a complete survey of the site at the end of the  construction phase of the project to confirm that the structures,  utilities, and   roadways (proposed) were built in the proper locations  authorized in the Construction/Engineering Plans or Plot Plans.  

Boundary Surveys

Boundary Surveys:  "any line or thing making a limit, whereas Corpus Juris Secundum states that a boundary is a line or object indicating the limit or  furthest extent of a tract of land or territory; a separating or  dividing line between counties, states, districts of territory, or  tracts of land." A boundary survey, also known as a land survey or  property survey, is the process of determining land ownership typically  witnessed by monuments or markers, such as, but not limited to, iron  rods, pipes or concrete monuments in the ground as well as recorded  information such as plats and deeds. NOTE: The   willful  destruction and or removal of above said monuments is illegal in the United States. These acts will always result in fining and rarely, but  not never, in jail time. 

Construction Layout


Construction Layout: construction surveying consists of three basic objectives:

  1. providing layout stakes, both horizontal  and vertical locations, that construction personnel can utilize to  position structures and perform earthwork accurately and efficiently. 
  2. ongoing layout, replacement of previous  stakes, and periodic checks of the overall project as a project  progresses toward completion  to ensure that everything complies with  the original design. 
  3. providing a As-Built/Record drawing  upon completion of the project to show the final location, dimensions,  elevations and overall configuration of all structures, roadways,  earthwork, etc. and any changes or modifications to the proposed Construction/Engineering Plans or Plot Plans. (see As-Built Survey) 

Elevation Certificates

Elevation Certificates: A form used to certify building and land  elevations to ensure compliance with community and Federal floodplain  regulations, determine proper insurance rates. Elevation Certificates  are also used in conjunction with Letters   of Map Amendment (LOMA) or  Letters of Map Revision (LOMR) 

Horizontal & Vertical Control

Horizontal & Vertical Control: a known permanent or temporary  marker(s) containing state plane coordinate data or gis information  and/or vertical data,(NAVD 88/NGVD 29 Datum) in relation to the current project. 

Legal Descriptions

Legal Descriptions: the description of real estate used to identify a  specific parcel of land used in real estate transactions. Legal  descriptions can be found in any purchase document such as a mortgage or  deed. 


Sketches: A graphic representation, specifically a detailed plan for the  proposal or intention of constructing a structure, vacating a  right-of-way, or the dedication of an easement for example. 

Topographic Surveys

Topographic Surveys: the three-dimensional location of pre-existing  conditions of the earths surface identifying the location of artificial  and natural features on the earth including permanent features such as,  but not limited to, buildings, highways, lakes, ponds, trees and sewers.   

Builders Packages

A Builders Package includes, but not limited to:

  1. Plot Plan
  2. House Layout
  3. Wood Form/Stemwall Survey
  4. Final Boundary/Mortgage Survey
  5. Elevation Certificates(if needed)