Some things that come to mind are adaptations to some things buyers might do in a competitive bidding environment: Submit a letter of explanation to the buyer's agent explaining how you love the house and will find the perfect tenants/next owners/etc.Be the first and best offerPresent a no-strings-attached gift with the offerI'm curious to hear other suggestions.  

so from a little research I found that each year you can gift up to 15k without being taxed.

And as a parting gift the house was trashed.  

Gift Cards at Holliday season if they have behaved all year.

Did he sell it, gift it, loan it, lease it, or let them live with him?

You can offer her a letter of recommendation (tenants don't normally get this so she'll love it) for her next landlord & maybe even give her a $50 gift card to a moving company.

😃One of my gifts is the ability to connect things together and make it happen, and In in this business works perfectly.

We're giving away a few gift cards for the winners of SurvivorOpoly, a Black Diamond original, so come and play and network with us.It's on the week normally reserved for our Worcester Ma meetings, but Worcester meetings resume in January.Hope to see you tomorrow, drive carefully!

Remember, if the networth is more than 22M, the estate tax has to be paid, and it is 40% max of everything above 22M. 2) couple can chose to gift the properties to children without incurring a gift tax up to 22M, however the children will not get step up basis, thus when they sell it, they will realize a huge gain if the RE has appreciated.

Depending on what your purchase costs and total profit I would maybe kick them a nice gift, rather that be $500 or a nice bottle of wine.