I have a 1940's cape house and interested in adding potlights/hightlights to our living room. The existing ceiling is plaster i guess? Can someone give me a ballpark range for adding 4?
$500 would be ballpark for a fairly easy install. That won't include patching your plaster. If there are issues with your existing electrical panel's capacity or the access to an attic space to run the wire, the price goes up.