As-built documentation matters whenever changes are made during construction, especially before Act 15 and commissioning. The buyer must review it if the apartment, common areas or installations do not match the annex to the contract.
It is prepared and certified by the legally required participants for the relevant project sections. The developer submits it with the acceptance documentation; a verbal explanation from the builder is not a substitute.
The difference between design and execution can affect area, distribution, openings, vertical risers, common parts and usability. The buyer must know whether the change is admissibly reflected and how it relates to what was promised in the contract.
What the document proves
What can you establish from it?
Each document answers a different question. A single document is rarely enough to prove title, completed construction work and the basis for payment at the same time.
What does it establish?
Records the completed deviations shown in the relevant certified project sections. Where there are no deviations, the applicable procedure may require a different confirmation; the conclusion depends on the full file.
What does it not establish?
It does not legitimize material deviations, does not prove defect-free quality and does not automatically amend the private contract with the buyer. It does not replace the cadastral scheme, Act 15 or the final approval.
What to look for in the document
Which details should you compare?
Compare the approved project, as-built documentation, change orders, Act 15 and cadastral data. For your unit, check boundaries, dimensions, areas, purpose, accessories, openings and installation elements.
What comes before and after?
It follows the approved design and documents changes made during construction. The changes should be reflected in Act 15 and the acceptance procedure, while the relevant data are submitted for archiving and cadastral recording.
Where the document comes from
Finding and checking it
Mesto does not automatically retrieve the as-built project documentation. Public access to Act 15 or a use permit does not mean that Mesto has compared the completed work with the plan in your contract.
Request the relevant sections from the builder, seller or supervisor. If there is a significant difference, check the construction file and ask a specialist to compare the approved, amended and executed version.
When do you need a professional review?
An architect and the relevant engineer must evaluate the technical change. A lawyer considers whether it is permissible under the contract, whether it affects the subject matter or the price, and what remedies are available.
Before you continue
Check these details
Use this list to prepare for a conversation with the seller or a specialist you trust.
- 01
Request a list of all changes to the layout agreed in the contract.
- 02
Distinguish insignificant from significant deviation with the help of a specialist.
- 03
Compare the completed areas, boundaries and installations with the project.
- 04
Do not take Act 15 as proof that the contract has been executed without changes.