The real-world house used as the exterior shot for John's house is 2733 Lake Hollywood Drive, which Zillow estimates as a $2.2 million home. (Dialogue describes the fictional home as being "on Beachwood," but that's very close to the real house location.)I like how Nolan moved up from crashing at a friends home in s1 to that new home on a rookie's salary (even if he did do the renovation himself). If Tim could get 1mm for his beat up small childhood home, how much is Nolan's home worth? Gotta be at least 5mm.
The fictional home was a bank-owned foreclosure when John bought it, with a ton of issues... depending how bad it was, he could have potentially gotten it near the $1 million price point, but I doubt much less than that.