[infinite93]

These numbers are from my experience... can't say they are 100% accurate

The 150 happiness boost from the house is worth roughly 15% extra Dev points on a full train...

Not certain about 12 to 17 endurance... In the lower endurance ranges each point of end has been worth roughly 2-3% in my experience. IT might be worth more in the higher ranges.

I would say a toss up, but if you need to make a single large purchase now and incremental increases later, the house makes more sense...