(a) Pre-approval revisions to the application. Applicants must submit to the HUD Area Office and to Central Office all revisions to the application. A revision is considered significant if it alters the scope, location, or scale of the project or changes the beneficiaries' population.

(b) Post preliminary approval amendments. Applicants receiving preliminary approval must submit to the HUD Central Office, a request for approval of any significant amendment. A copy of the request must also be submitted to the Area Office. A significant amendment involves new activities or alterations thereof which will change the scope, location, scale, or beneficiaries of such activities or which, as a result of a number of smaller changes, add up to an amount that exceeds ten percent of the grant. HUD approval of amendments may be granted to those requests which meet all of the following criteria:

(1) New or significantly altered activities must meet the criteria for selection applicable at the time of receipt of the program amendment.

(2) The recipient must have complied with all requirements of this subpart.

(3) The recipient may make amendments other than those requiring prior HUD approval as defined in paragraph (b) of this section but each recipient must notify both the Area and Central Offices of such changes.