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Improvement Survey Plat (ISP)

An Improvement Survey Plat is the most common full survey provided. Other common names are "Boundary Survey" or "Land Survey Plat". 

During the field work to complete an ISP, the surveyor will locate and/or reset all property corners of the property. All visible improvements and utilities will be located. Any apparent easements (like a trail) will be located. The final product for an ISP is usually a 24" x 36" document.


If you would like to get into the details, here is a copy of the language in the current (as of March 2017) Colorado Statute:

38-51-106. Land survey plats

(1) All land survey plats shall include but shall not be limited to the following:
(a) A scale drawing of the boundaries of the land parcel;
(b) (I) All recorded and apparent rights-of-way and easements, and, if research for recorded rights-of-way and easements is done by someone other than the professional land surveyor who prepares the plat, the source from which such recorded rights-of-way and easements were obtained; or
(II) If the client wishes not to show rights-of-way and easements on the land survey plat, a statement that such client did not want rights-of-way and easements shown;
(c) All field-measured dimensions necessary to establish the boundaries on the ground and all dimensions for newly created parcels necessary to establish the boundaries on the ground;
(d) A statement by the professional land surveyor that the survey was performed by such surveyor or under such surveyor's responsible charge;
(e) A statement by the professional land surveyor explaining how bearings, if used, were determined;
(f) A description of all monuments, both found and set, that mark the boundaries of the property and of all control monuments used in conducting the survey. If any such boundary monument or control monument marks the location of a lost or obliterated public land survey monument that was restored as a part of the survey on which the plat is based, the professional land surveyor shall briefly describe the evidence and the procedure used for such restoration. If any such boundary monument or control monument marks the location of a quarter section corner or sixteenth section corner that was established as a part of the survey, the professional land surveyor shall briefly describe the evidence and procedure used for such establishment, unless the corner location was established by the mathematical procedure as outlined in section 38-51-103.
(g) A statement of the scale or representative fraction of the drawing, and a bar-type or graphical scale;
(h) A north arrow;
(i) A written property description, which shall include but shall not be limited to a reference to the county and state together with the section, township, range, and principal meridian or established subdivision, block and lot number, or any other method of describing the land as established by the general land office or bureau of land management;
(j) The signature and seal of the professional land surveyor;
(k) Any conflicting boundary evidence; and
(l) A statement defining the lineal units used including but not limited to meters, chains, feet, and U.S. survey feet. If it is necessary to define conversion factors, the factors shall be a function of the meter as defined by the United States department of commerce, national institute of standards and technology