San Diego County has a shortage of about 128,000 affordable housing units for low-income wage earners and those living in poverty, according to a new report from the San Diego Housing Federation.

The report, part of a statewide study done with the California Housing Partnership Corp., said that this region and the state face a critical shortage of housing that lower-income people can afford.

The report hopes to push local, state and federal officials to adopt policies that will ensure all residents have access to stable and affordable housing.

Among the report’s findings:

Median local rents increased 23 percent from 2000 to 2012, while median incomes declined by 7 percent.

Seven in 10 low-income households pay more than 50 percent of their incomes on rent.

Ninety-one percent of all very low-income households in the county don’t have access to an affordable home.

In the past five years, there’s been a 77 percent decrease in state and federal investment in affordable housing in San Diego.

Included in the proposed solutions to the problem are maintaining and updating housing impact fees for affordable housing projects, and the streamlining of permits and approvals for affordable housing.