According to The Party Wall etc. Act 1996,“adjoining owner” and “adjoining occupier”, respectively, mean any owner and any occupier of land, buildings, storeys or rooms adjoining those of the building owner and for the purposes only of section 6 (adjacent excavation and construction) within the distances specified in that section. The building owner is defined as an owner of land who is desirous of exercising rights under this Act. This includes—
 Protections of the adjoining owner under the Party Wall Act
The Act protects the interests of adjoining owners from any potentially adverse effects that such works might have by imposing a requirement that all adjoining owners are given prior notice. It also grants the owner of a property the right to undertake certain works that might otherwise constitute trespass or nuisance.
Section 10 of the Act stipulates that where an adjoining owner does not consent in writing to works notified by the building owner under Sections 3 and 6, both parties must either agree on the appointment of a single surveyor to act for both of them (known as the Agreed Surveyor), or each appoint their own surveyor, to determine by award matters in dispute between the parties.
Inaction on the part of the adjoining owner does not halt the statutory process. A dispute can arise by an adjoining owner actively dissenting, that is, communicating to the building owner an objection in respect of some matter arising out of or incidental to the works - the means of making that objection are not important, but if he remains silent, neither consenting nor dissenting for a period of 14 days after having been served with a Notice under either Section 3 or Section 6, the Act deems a dissent to have arisen in any event.
 Related articles on Designing Buildings Wiki
- Adjoining buildings definition.
- Building an extension.
- Construction covered by the Party Wall Act of 1996.
- Party Wall Act.
- Party wall dispute.
- Party wall notice.
- Responsibility for boundary features.
- Right of support.
- Trespass in buildings design and construction.
- What approvals are needed before construction begins.