Creepy houses used in films or TV

[Trevor]

My fave scary house was the "Wyndham Manor" in the TV movie Baffled with Leonard Nimoy: far from being a scary place, it is a place of peace as a Buddhist organization uses it now.

https://www.windsor.gov.uk/things-to-do/taplow-court-p286311

Then, there's this place which is really haunted, according to some.

https://en.wikipedia.org/wiki/Ettington_Park_Hotel

[Dr. Whom]

There is the Ennis house, from the House on Haunted Hill onwards

https://en.wikipedia.org/wiki/Ennis_House

[RCMerchant]

Here's the house from the TEXAS CHAINSAW MASSACRE (1974) then and now.
I like it better in 1974. Because it's filled with bones and dead bodies. So homey! 

[ER]

Back in 1989 Olivia Newton John starred in a made for TV movie called A Mom For Christmas, that was filmed down the street from where my aunt lived. On the surface there's nothing creepy about the charming home shown in the movie but my aunt and other locals remembered that in the 1950s the old man who lived alone in the house died there and lay on the floor dead for apparently several weeks before he was discovered. The story was the original wooden flooring had to be taken up and replaced where he lay because it was so.... Yeah.