(1) Expansion of a residential dwelling unit, so long as no new dwelling unit is created thereby.

(2) Remodeling, repair, rebuilding or restoration of any structure, so long as no substantial additional impact to the services addressed in this division, as determined by the city manager and subject to the appeal to the city council by an aggrieved applicant, is caused thereby.

(3) Construction of any nonresidential structure by any agency of federal, state or local government.