What should I do first after closing on my house?

Change the locks or rekey them immediately, even on a new build. Set up your utilities including electricity with APS or SRP, water, gas, and trash service. Update your address with the post office, your employer, banks, insurance, and voter registration. Locate the main water shutoff, electrical panel, and gas shutoff in case of emergency. Test all smoke and carbon monoxide detectors and replace batteries if needed. Check that the HVAC filters are clean and note the size for future replacements. Take photos and video of the home's condition for your records. Review your title policy and file it safely with your other closing documents. Set up your homeowner's insurance payment and property tax escrow if applicable. If you have an HOA, confirm your contact information is on file.