If you want an FFL does it matter the type of home you have or amount of land you have?
It depends on a whole host of things. Best to ask these kind of questions to the ATF directly.
Would they allow people in a townhouse or apartment to have one?
Probably a townhouse is OK, very unlikely in an apartment though I have no solid grounds to back this up other than a hunch, probably has to do with getting permission from New Castle county to run a business from your home; again best to ask the ATF directly.
also if a person gets an FFL does that mean their spouse could be an employee and do transfers similar to how employees of a gunshop can do them.
As it was explained to me when I inquired awhile back, anyone related to the sole proprietor FFL holder, living at the residence and able to pass the background check is allowed to perform the transfer. My understanding is this has more to do with county code than actual FFL policy, my understanding is the ATF has no issue with non relatives doing 4473's on behalf of an FFL so long as they can pass the background check and the process doesn't violate local codes/laws.
Before you dive into the FFL pool ask around and make sure it is really for you, most individual FFL's do it as a side gig and the money isn't that great for the effort and expense you go through. I'd call it a labor of love and not so much a profitable endeavor. Most private FFL's do most of their business as just transfers, this translates to funky hours trying to accommodate people, running around to pick up firearms from shippers if you work a real job during the day (they deliver during the day).
Be prepared for people showing up unannounced at weird times and holidays to check and see if a gun has shown up yet (including when you are not home). Also remember you will be opening up your house to folks you are meeting for the first time and might have tell them they are denied and hope they react 'good'. Granted most gun people are good people, there is still that 1% who are scumbags and they will know where you live. I looked into it and for me the only way I could do an FFL is with a full blown store front, I see way to much liability to let folks off the street come to my house.
Good luck with whatever you chose.
Sergeant of Arms: Delaware Antique Arms Collectors Association