If you plan ahead, you can find good prices online at Lowe's and have them delivered for free. 

Others (mostly the retired ones) call us very now and then and ask to come see the house while the work is going on and sometimes they spend the entire day driving to Home Depot with us and delivering materials and such.

That way, it is a seller default if they can't deliver those things before you close as opposed to your obligation to terminate if they don't.It’s all about playing your cards right at the right time-when you have leverage, and knowing when you don’t.

Lots of people make promises but then don't deliver.

Let them know it needs to be delivered by a certain date or they will receive a late fee added on to their next month's rent.

If for non-payment of rent, those must be posted or hand delivered.

@Joshua Dorkin, Its still fresh in my mind! 

Brian Zabowski ,I'd add a quote from a contractor, or if you plan on flipping yourself, a conservative flip estimate.If presenting in person (all of this seems obvious but these are the things I would do exactly): I would clean myself up as quickly as possible (fresh haircut and shave), in texas I'd wear starched jeans, a button down, boots, and a navy blue sport's coat.

This covers me for my time delivering new keys and if a locksmith is used....

I am a freshly retired school teacher ready to bring better homes to our communities and produce more than a teacher's salary.