Don't think you're out of luck if the property you want to buy already has an accepted offer. Did you know that it's not uncommon for buyers to fall out of escrow? By writing a backup offer, you place yourself in line to be considered should the initial purchase not come to fruition. Check out this incredible scenario where 3rd in line ultimately got the house! https://youtu.be/o0Ca-lPc3xQ
Whether the house you just bought was owner or tenant occupied, it's always a good idea to rekey your new home. You never know who might have a copy to access your property. The Keenan Carter Group discusses easy options to rekey and protect your home.
Some Home Warranties even cover rekeying your new home. Check with your provider to see if rekeying is covered. https://youtu.be/pBL6zZbWrTA