In article ,
Andy Hall writes:
In practical terms there are three ways that I can think of that he
might be detected.

- There's a fire and he gets toasted because he can't escape

- Somebody finds out that he's running a business and reports him the
the local authority. This may be contrary to a covenant or planning
condition of when the place was built and they decide to investigate.

- He wants to sell the house - although then he could probably remove
his little den.

- He decides to feature it on a television program so everyone knows
he's done it ;-)

--
Andrew Gabriel