Commercial-to-residential conversions can involve extensive internal and structural alteration.
Offices, shops and other commercial buildings may be subdivided into several homes, creating new floors, walls, services and ownership arrangements.
Party Wall issues can arise both with neighbouring buildings and within the converted property itself.
Existing party walls remain relevant
Changing the use of a building does not change the fundamental Party Wall position.
Structural alterations to an existing wall shared with a neighbouring building may still require notice under Section 2.
New residential layouts can involve major structural work
Conversion works often include:
- new stair cores;
- structural openings;
- lift shafts;
- altered floors;
- rooftop extensions;
- new services;
- rear extensions; and
- excavation.
Several Party Wall provisions could therefore apply to a single project.
Multiple adjoining owners
Commercial buildings frequently adjoin blocks containing several leasehold interests.
Identifying adjoining owners can consequently be more complex than for a typical house.
Ownership should be investigated early rather than immediately before notices are served.
Future party structures
Once flats are created and sold on long leases, floors and walls between those units may become party structures.
The design should therefore consider long-term ownership and maintenance as well as the initial construction phase.
Permitted development does not remove Party Wall obligations
Some changes of use may benefit from permitted development or other planning routes.
That does not automatically remove Party Wall requirements.
Simple Survey can assist developers
Commercial conversion projects often need Party Wall strategy before works are tendered.
Send Simple Survey the proposed plans and ownership information and we can help identify the relevant adjoining owners, notices and likely surveyor requirements.