There is absolutely no reason to buy today. You are not doing your family justice by buying. What so you can paint it purple if you want to? If you can afford an x payment on a mortgage you can get so so much more by renting if you really wanted to. If you do not look at a house as both a home and investment you are foolish.
Why would you pay x dollars today when you could wait 18 months and get so much more house for you money. And in the mean time rent the equivalent or better and save the rest…. There is no argument for buying today.