Hawaii County Mayor Billy Kenoi will formally open the first phase of a low-income rental and transitional housing complex for West Hawaii Tuesday.

The opening of the first 40 units of Na Kaulana O Ulu Wini starts at 10 a.m. on Hina-Lani Street, mauka of Costco.

The project will provide case management, mail and computer access along with an array of on-site social services, such as employment and life skills training, mental health services, counseling and child care, according to Kenoi’s office.

The complex was built by the county Office of Housing and Community Development, and oversight of the various on-site resources will be provided by the procured program operator, HOPE Services Hawaii, formerly the Care-A-Van program of the Diocese of Honolulu.

The project eventually will have 96 two-bedroom units each with 750-square-feet of living space.

Funding for the first 40 units was provided through a county $7.5 million appropriation and a $4.87 million U. S. Department of Housing and Urban Development Neighborhood Stabilization Program grant of $4.87 million grant awarded through the state Housing Finance and Development Corp.