The main thing is good structural specs.  Atleast 9' ceiling heights, building materials, a good layout, room sizes etc. 
Good kitchens and bathrooms will always be valued in a home as well, so don't cheep out there.  I would recommend at least granite, if not quartz countertops, undermount sinks, undercabinet lighting and good spacing for a large fridge with waterline. 
 
Bathrooms should have at least soaker tubs and I would recommend having both a standing shower and tub in the master ensuite.  As well as 2 sinks. 
 
Natural gas lines for your bbq are great too.  Not a must for resale, but very nice for your own use.
		 
		
		
		
		
		
		
		
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