To Build or Buy?

This question seems to apply to the two big developments I have coming in 2016. We have already decided the likely answer for one of the situations but we are still doing research in the other.

The property: We have almost 100% decided to buy a property with an existing house. It does make the property slightly more expensive but a property with a house usually comes with well and septic already in place and the interest rates for traditional mortgages are far less than the interest rates for lot loans. We probably wont be able to pay cash for our place, property in the area we want is pretty pricey, so we have to think about interest rates etc. We still may end up building in the long run, but in the mean time we will have a place to live and a monthly payment that is more affordable. My dream house is the 2 bedroom Whidbey (557 sq ft) by Tumbleweed Tiny Houses, but we'd turn the second bedroom in the back into a pimped out mudroom complete with a dog washing station and add a back entrance. Most people have a dream kitchen or a dream living room but I have a dream mudroom.

The Beehive: We are also mulling over the question over in relation to the beehive. I bought a book of beehive plans. We decided to go with the most common design, the Langstroth, simply because we live in Utah, a desert, where honey production can be decreased due to that fact so I don't want my bees to have to build new honey comb each year. Apparently it takes 8 pounds of honey to make one pound of wax. Maybe when we get to Oregon we can keep Warre Hives too but while we live in Utah, we will go with the Langstroth. That being said, apparently accessories for the Langstroth hives can add up, so we are pricing hives and lumber to decide if we should build our hive or buy.