Build a Secure Estimate Archive

Protect the renovation estimate without hiding ownership

Encryption should protect a retained archive while the editable renovation estimate remains governed in its approved approved estimating system. Define where plaintext working copies exist, how a release is exported, when it enters the encrypted archive and how temporary files are removed after verification.

Run the control sequence

1. 01

   Keep the authoritative working renovation estimate in the approved approved approved estimating workspace.

2. 02

   Export one named estimate revision to a controlled staging folder.

3. 03

   Verify the export, then import it using the tested archive procedure.

4. 04

   Lock and reopen the archive; compare the manifest and file counts.

5. 05

   Remove or retain plaintext staging according to the recorded policy.

Preserve decision evidence

Record estimate revision, source system, export time, staging path, archive ID, import result, reopen test, manifest comparison, plaintext disposition and operator.

Stop when

• The encrypted archive is mistaken for the live approved estimating system.
• An import is assumed successful without reopening it.
• Untracked plaintext exports remain on local or synced storage.

The record should show the approved estimate revision, tested environment, responsible people and known limitations without storing passwords or unnecessary project data.

Separate the surrounding controls

Does not establish authorized bidder authority, commercial approval, commercial approval decisions or contract record compliance; it does not replace project permissions, guaranteed backup, password recovery or organization identity management. Encryption does not authorize a recipient, preserve every backup or remove plaintext working copies automatically.

Renovation estimate questions

Primary references

• NIST SP 800-111: Storage encryption
• NIST: Media protection

References support specific boundaries and do not imply endorsement.