Gratitude - in loo.
The centre, in Brinkburn, South Shields, provided home to a site office for staff from South Tyneside Homes and Keepmoat while they carried out work to refurbish houses on the Harton Moor estate.
Centre manager Jean Copp said: "We still had the original toilets from when the Centre was built.
"Now customers are saying the toilets are a pleasure to visit. It was an excellent agreement."
South Tyneside councillor Jim Foreman, said: "I'm very impressed with how this mutual arrangement has helped both parties and the results are excellent. It was clearly a win-win situation."