Co-ordinator Ra-chael Roberts said securing the sponsorship in June from Bayswater and Noranda Community Bank was important after losing state and federal funding over the past two years.
"Our focus has always been on educating people about how to use energy and water more efficiently, reduce bills and improve environmental outcomes," Ms Roberts said.
"This is a key area where our skilled and professional auditors assist households across Perth.
Get in front of tomorrow's news for FREE
Journalism for the curious Australian across politics, business, culture and opinion.
READ NOW"This work is still going on with local council support in some areas, namely Stirling, Joondalup, Cambridge and Cockburn.
"It is hoped that Bassendean and Swan will soon have home audits available for residents."
Ms Roberts said the sponsorship enabled Environment House to assist local schools and community groups to reduce their energy bills in a shared-cost arrangement.
"Most recently we assisted Hillcrest Primary School to reduce its energy and water use, with a projected saving of $15,000 a year," she said.
"Our auditor Alan Benn is currently finalising an audit for Weld Square Primary School.
"We are also providing composting and worm farm eco-hardware and education for local schools.
"We anticipate this service to expand rapidly as schools learn about what we are doing and for our relationship with these schools to be ongoing into the future " a future that is now secure."
Environment House is holding an open day on September 13, from 11am-3pm, with Mr Benn, who can give cost-saving advice.
Gardening volunteers will also be on hand to talk about three methods of turning organic waste into soil fertiliser - traditional composting, worm farming and bokashi composting.
For details, visit www.sustainablehouseday.com