1. Make sure you get a cost comparison with what's in the area. Don't overpay.
2. Check if the neighborhood has a strong organization, and check the CCR's. Some neighborhoods don't have strong organizations, and they suffer for it. Some have nazi organizations, and they suffer for it. Get the CCR's and check them. Some can get ridiculous. Find out if the neighborhood association is voluntary or mandatory. Check to see if they allow sheds in the back yard. These are invaluable places to store the grimy crap that you don't want in your garage, etc, but a lot of newer neighborhoods don't allow them. I moved from one where you couldn't have one to one where you could, and I'll try to never go back.
3. Absolutely do not fail to do a final walkthrough. I've seen houses that have passed inspection get damaged by the movers, and following up on the damage can be a PITA as the sellers will deny damage and the movers will deny it too. You can get it cleared up, but again, it's a PITA and best avoided.
4. Check veeeeeery carefully if there are any fence encroachments. You might not mind if the neighbor's fence is on your side, but the neighbor might have a huge problem with it, even if it's only a few inches. He might have run his course with the neighbors who are selling the house, but might be more than ready to revisit the issue with *you.* And if you're not willing to shell out $1,500 bucks to move the whole damn fence, well then, that makes you just as much of an A-hole as the last neighbor. Just ask me why I'm saying this.
5. Sloooowly integrate with the neighbors. In every move I've ever done, people are just absolutely giddy about dragging you into the neighborhood politics. It was never like this when I lived in apartments; neighborhoods bring it out more, maybe because of the increased permanence versus apartments, where people really generally don't go out of their way to know the neighbors. The gossips will be right there smiling, but ready to cart off every snippit of information that they can glean to anybody who will listen. The users will be assessing their ability to borrow tools off of you. The mashers will be assessing their ability to bed your wife. The hussies will be assessing their ability to bed you. The territorialists will be giving you that pink-rimmed-eye mad dog stare, wonding how you will fit into the 'hood pecking order, the materialists will be sizing up yer stuff, and will be more than willing to buy a new car if that's what it takes to upstage you... Yea, just move in, wave nicely, start painting, get the living room set, chat briefly and friendly with the neighbors at first, and then let the good ones closer while keeping the rest at a friendly but respectable distance.
6. Not sure about your demographics, but a small yard isn't necessarily better than a larger yard. IME, the actual mowing and trimming time isn't substantially greater for a larger yard; it's the setup that's a pain in the booty. Getting everything out, mixing the fuels, sharpening the blades, replacing the strings, the weeding, fertilizing, cleanup, etc. On a 42" deck mower, a few more passes will only take a few more minutes. I went from a yard that had a postage stamp-sized yard to a gynormous corner lot, and the actual mowing, while greater, isn't nearly as bad as I thought is would be. That said, if you live in an apartment, and do the math on a quality new mower, an edger, a trimmer, a blower (you can get the 'quick link' types of multi-attachment tools, which will trim down your engine costs, but will wipe out all of you ancillary power tools if you should experience engine problems), rakes, shovels, shears, fuel containers, mixing oils, etc, etc, etc, etc, you'll quickly see that it might be easier and somewhat cost effective to hire a lawn service, even if you plan to buy these things used or referbished. Also, a larger yard does indeed allow somewhat greater options when it comes to landscaping, outdoor activities, and cubic feet of space for children to play in.
7. Drive by the area at night. Dark? Well lit? Not bad to be near a streetlight.
8. Check on the 'puter to see if there are any pervs in your area. Don't want to move in right next door to a sex predator. Speaking of that, anecdotally, when I checked out this house I'm in right now, one thing that bothered me was that the guy who was selling it was very, very keen on locking all the doors. After we'd checked out the back yard, he made sure to lock the screen door and the sliding door, same thing front and side doors. Bothered me, and so I called a cop friend of mine asking for crime stats. Said my neighboorhood wasn't even on the radar. Only later found out that the guy had been arrested for standing in the garage and shaking his noodle at women when they passed by. Kind of freaky, and goaded me to burn off about a can of lysol on the internal door knobs. One can per knob. Guy was afraid of retribution and that's why he kept locking the doors.
9. Try to get a feel for background noise potential. Near an airport flyover? Near a train track? Near a race track? Near an amusement park? Near a school? Near a weapons test facility? By near, I mean within earshot. These things can get old.
I'm sure there is a lot more advice here, but I just wanted to get in my .02.