Posted By Bob Youel

Alterations: It depends on your terms and conditions of rent/occupation etc

Additionally where its your workplace you are probably the 'controller' so all that enter there are deemed to be under your control and if there is a problem e.g. they work dangerously then its your problem!

If a landlord undertakes building work themselves then whilst they are building they are builders so all the CDM etc regs apply

I personally would not trust the average landlord to carry out building works themselves as most [in my experience] are not competent and want cheap jobs done and you are stuck with what they leave behind!

Posted By alan brotherton
In furtherance of a comment made by one of the Bobs - fire safety and structural integirity are prime concerns. e.g. You (or your landlord)will need to re-do any fire risk assessments now that buildings are interlinked by a breach in the wall. I don't think there is a clear dividing line between who is responsible. I think both you and the landlord would have responsibilities but that should be defined more clearly in your terms of occupancy,lease etc. Regarding how the work was carried out and who by - it is all hindsight now but the job should have been planned and competence of the person doing the work determined at a much earlier stage.