If you want to use most of your money as a down payment and get a mortgage for the rest, your closing costs will be higher, because you will have mortgage application and associated fees. Assume closing costs are $6000, and you still want $5000 for misc. expenses. Then you have a downpayment of $89000, Assuming your credit is good, you could use your $100,000 to buy something worth up to about $450000 and still get a conventional mortgage (with no PMI required). A mortgagte broker would be able to give you a more refined estimate, and a local Buyer Agent could walk you through typical closing costs in your preferred area. The numbers I used are just examples, and could vary a lot.
Your question is a little vague...what prices are you looking at, etc.? I could give better advice, but need to know more about what you're look into buying and costs, etc. etc.