Greetings, neighbor!
I live in Connecticut, also, and have ordered my ducklings from Meyer Hatchery - 10 runner females, due to arrive around 3/22.  I have set up a brooder in the guest room - a large Rubbermaid bin - about 5 ft long, 2 ft wide, 18 inches high.  I cut a 6 ft section of 1/2 inch hardware cloth and flattened it out, wrapped the cut ends in duck tape (natch), and am using a 30 watt and a 60 watt ceramic heating bulb to keep the brooder at various temperatures (90 initially, then cooling to 80, 70, 60, . . .)
I don't plan to let them outside till they have some real feathers and the weather cooperates.  If we have unusually mild days, they will get field trips.  But I don't reckon they will be in their own house until they are a couple of months old.
There are many factors involved, and I am likely to need to rethink my "excellent plan," 
		
		
	
	
 but there is a nice spot in the basement where I can keep them warm enough using temporary fence, bedding and the ceramic heaters if necessary.  We have a big window in the basement, it is not like a dungeon! 
Drop a PM line if you wish - nice to know of folks relatively close by.  We can talk fence and waterers and such!