(a) Initial submission. The mortgagor must submit the materials applicable to the covered action, as specified in §§245.416 through 245.419, to the local HUD office when the notice required under §245.410 is served on the tenants.

(b) Subsequent submission. If additional notice under §245.420(c) is required, the mortgagor must submit to HUD any changes to the materials required under §§245.416 through 245.419 when the notice required under §245.420(c) is served on the tenants.