My house was built around 1972 and I bought it a year or so ago with planning permission for a garage and side/rear extension to the kitchen. When I bought it it seemed that the previous occupier had paved over the front garden (to be used for parking) and added a porch both of which were not allowed for under the covenants. She had to take out indemnity insurance before I bought the property. I now wish to go ahead with the extension which includes building in line with the porch. The company that originally built the property still exists so should I inform/ask them. If so, can I do this without going legal and do I just write a letter? Or is this going to open a whole can of worms? A lot of my neighbours have already done a similar thing but I've not asked them about it. I should imagine these things only come to light when you are selling. Advice please.