Excellent replies from all so far.
I just bought a house in July, and to say the least, the realtor that was selling the house thought I was nuts climbing in the attic, in crawl spaces, and well, just looking at things other then the size of the closets.
I guess a few things that I can try to add or just elaborate more on are,
#1 Don't be sold on just one house. Don't be afraid to walk away. Look around at other houses in the area. Ask for a history of the houses in the area and when they where sold and for how much. If your realtor is a good one, (Thank goodness I had a good friend as one) he will do this for you. Remember, they are charging a lot of money for using them. Get your moneys worth.
#2 Don't be afraid to ask questions. (see above)
#3 If you know anything about the mechanicals of a house, (Like it sounds) then make sure you are complete. If they say your taking too long, then something is trying to be hidden. Walk away. Remember, it's a lot of money and your largest investment you will ever have. Don't be afraid to climb into the attic. I did and found that the house had added insulation the previous owner didn't even know about. Look for Cracks in the foundation or basement. This could mean something serious in the future to fix.
#4 At the signing, don't be afraid to ask questions here either. READ THE FINE PRINT. Don't rush threw the signing. Your realtor will also help you in this area. They are supposed to know what each paper is and what it's for.
#5 Look at the neighborhood. This will dictate what you could sell the house for in the future. Remember what you are looking for and just remember that is what they possible future owner would look at.
#6 Windows, kitchen appliances, Pipes, Septic fields and when they where pumped out last or installed, roofing, siding, wiring, and whatever else you think would cost a lot of money to repair.
These are just a few things I could think of in the short time it took to type this. Good luck and I hope it goes easy.
Oh, and remember, buying a house can be stressful for you and your wife. I know of some that have been stressed to the limits because of the house they are looking for or something happened after the fact.
I guess the best thing I can suggest is just be patient. Don't think you can move in tomorrow. And ask them to pay for the closing costs. This will make it a lot easier on you, and if it means selling the house, the owners will be more then willing. And because you have no contingency (I am guessing) it looks better on the agreement.
Oh, and I know warranties here have been common place as of late. That may also prove that the house is in good order and if something does go wrong, the previous owners are responsible or the reality company will help pay for it.
Wolfie