An Improvement Survey Plat, commonly referred to as an ISP, is a detailed boundary and improvement survey prepared in accordance with Colorado requirements. It is based on a monumented land survey and documents the relationship between the property boundaries, existing structures, visible improvements, easements and other physical conditions affecting the property.
An ISP shows structures, visible utilities, fences, hedges and walls located on the property and within five feet of its boundaries. It also identifies conflicting boundary evidence, visible encroachments and recorded easements, underground utilities or tunnels when supporting documentation is available.
Improvement Survey Plats are commonly requested for property additions, garages, accessory structures, permit applications, real estate transactions and projects where the relationship between existing improvements and property boundaries must be clearly established.
An Improvement Survey Plat is a true boundary survey based on a monumented land survey. An Improvement Location Certificate, or ILC, is not a boundary survey and does not establish property corners. When accurate boundary locations or detailed improvement information are needed for construction, permitting or resolving property concerns, an ISP provides a substantially greater level of survey information.
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