Will The party wall act apply to my cellar conversion?

If you are to insert beams into the party wall or alter the foundations by introducing underpinning then the “Party Wall Act” will certainly apply. You therefore need to follow the act and make sure that you serve the notice two months prior to commencement of the works. We would always recommend that you discuss your proposed works with any of your affected neighbours prior to formally serving the notice to comply with the act. This keeps things on more informal basis and quite often concerns can be expressed and resolved in a far friendlier atmosphere where agreement is more likely to be reached amicably.