I have recently asked following question around leasehold contract in property I am in the process of buying. It states that I am not allowed to sublet parts of building I can only sublet it as a whole (can't rent it out room by room). Which ruins my plans as I intended to live in couple of rooms and rent out the other two.
I have glanced over the Residential Long Leaseholders A guide to your rights and responsibilities and couldn't find a section about doing changes or renegotiating existing leasehold contracts, only rights of buying lease of from freeholder which would be an option, but can become more hassle than it's worth (I would have to team up with the other leaseholder).
Other option would be to try negotiate with existing landlord to amend leasehold contract (in exchange for some additional payment or agreement to invest certain amount of money in property). I couldn't find any resource on how such negotiations are being done, nor examples of such re-negotiations, or things proposed and such.
Can leasehold contracts be amended, and is this a common practice? What are regulations around this?
Any help or resource to existing cases and common practices would be much appreciated, I would like to prepare well and know my options before I start talking to landlord.