What is the biggest thing that would put you off a house?

Cuddlybearman

Anywhere near a school - in fact if there wasn't a school for a 100 miles it would be great.....

weeg

Not enough natural light and lack of privacy. Anything else I can fix or tolerate.

Dizzy_Ditzy

A school within 1 mile 
Shared access
Trampolines here too! 
Main road
Cut throughs - no thanks! 

moneysavinghero

A steep driveway. I wouldn't be able to sleep at night.

NaughtiusMaximus

Marvel1 said:

Leaseplan 

Definitely, I don't know how I forgot that one, service charges of any description would put me right off. 

Also a couple more:
Too small - which rules out pretty much anything built in the last 30 years
Storage heaters

Dodgy/annoying neighbours are a given, obviously you don't know for sure until you you move in but warning signs are:
Rubbish, garden furniture or toys in front garden
Barry car on the drive
Union Jacks or George flags

ProDave

Attached to another house.

daveyjp

Any history or risk of flooding,

babyblade41

Attached, main road, towns, small gardens , new build , no drive or garage , 

School doesn't bother me where I am as it's a single dead end track  and no cars can park 

So mine has to be a detached in a rural area , 

springmagpie

Never living on a housing estate again. neighbours from hell and living on top of each other with tiny gardens and limited parking!

AlexMac

No roof, or one which needs immediate replacement... no central heating, decent bathroom (or any bathroom?) or litchen

Oh- hang on; I lied. 

Now I recall I bought two like that; in 1975 and 1997... And because they were wrecks when I bought, I made a mint in added value when I sold on... (although the one I then bought in 2007 didn't do so well due the the price-collapse oin 2008 , and a mate got similarly burned when he bought at the peak just before the crash in 1987!

In fact I  also even sold another house whose roof was shot; visible damp on the internal chimney breasts... but as the buyers planned a loft conversion, we just adjusted the price... 

So what geographic location-related, external, environmental or social factors can't you fix...? ... because you can usually sort the internal material issues!