It was many years ago - our first house, end of terrace Victorian,
Back in the early 60's no central htg to worry about, but we did note an electric power point in every room, two in main bedroom, etc. etc. Day after wedding we got back late to discover none of downstairs light worked, evidently my Dad had (helpfully) put up a shade on one light and this had blown the lot. Had to get electrician in following day. This led to complete check on electrics on house and to discover that just two of those power points actually came of power circuit. All the remainder, DIY carried out and off lighting circuit.
Had to have whole house rewired and I can still remember that electrician, showing us various bits of wires which had been there, which could have led to a serious fire any time. Fortunate, in a way, for us that we had it rewired immediately, but devastating to our finances.
The 'multi-boiler' in the bathroom above the kitchenette, gave the hot water for both rooms. It had been turned off and when we got gas engineers in the start it up (was October), they refused and condemned it!!!
Second day there, hubbies foot went through hall-way floor - turned out whole ground floor had serious wet rot and needed treatment.
We were in our v. early twenties, came both from council flats, no-one to advice us -first step into owning our own home. Steep and expensive learning curve for us.
In the decades since, have always tried to play fair when selling a property and have never had anything really bad when moving into new one.
strangely enough, the worst of subsequent moves was from that house, seven years later, to a new build. Raft of problems, most doable, but main one was that builders had installed c.htg by warm air which entered each room via a grill high up in the wall. Warm air rarely managed to get lower down, house was always cold. One of seven houses we all joined together eventually to try to get this changed with agents, but not successful. Due to twins arriving we had to move out within four years, for a larger house, but visited those neighbours as they were friends for several years, and all those house eventually had to have normal gas c.htg via radiators installed.