As a separate project under the community's construction defect program, Villas at Arista needed several defective concrete sidewalks and an alley replaced. DHA determined the scope, managed the bid process, and oversaw construction on the HOA's behalf. Because DHA was on site, it caught several deficient subgrade conditions before the contractor placed concrete and had them corrected while it was still easy to fix, not after the new concrete was already poured.