The house that love built / Beth Wiseman.

Enhanced descriptions from Syndetics:

Brooke has only loved one man, her late husband. Owen's rebuilding after a painful divorce. Can a mysterious house bring them together for a second chance at love

In the charming town of Smithville, Texas, Brooke Holloway is raising two young children on her own, supporting them by running the family hardware store. The last thing on her mind is falling in love. But she's intrigued when a stranger moves to town and buys the old Hadley mansion. She's always heard that house holds a secret--maybe even a treasure--and she can't wait to see inside. When she meets the new owner and they spend time together, she can't deny the attraction. Could God be giving her another chance at happiness Or is she betraying her late husband's memory by even thinking that way

Owen Saunders bought the Hadley place to spite his cheating ex-wife. She'd always wanted to restore an old house in Smithville. Now he's going to do it without her. But if anything needs restoration, it is Owen's heart. Then he meets Brooke and her kids and finds himself tempted by love. Can he bring himself to trust a woman again

Throw an eccentric uncle into the mix, along with the town's teenage troublemaker, and even a finicky cat--and one thing becomes clear: God is bringing them all together for a reason.