As-built survey is usually required after the construction is completed for purpose of comparing it with the design drawings. As-built survey plan is submitted to relevant authorities.



As-built survey documents the location of recently constructed elements of a construction project. As-built surveys are done for record, completion evaluation and payment purposes. An as-built survey is also known as a 'works as executed survey'. As built surveys are often presented in red or redline and laid over existing plans for comparison with design information.

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