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Building a Garden Gym Near the Boundary: When the Party Wall Act 1996 Applies in England and Wales
A garden gym seems like a project that only affects the owner’s own land. Yet a slab, a set of foundations or a wall close to a boundary can trigger a law that most home-gym guides never mention: the Party Wall etc. Act 1996. This guide summarises the Government’s explanatory booklet on the Act. It applies throughout England and Wales, and the booklet states that the Act does not apply to Scotland or Northern Ireland, so readers there should take separate advice. It is general information, not legal advice.
What the Act covers
The booklet says the Act came into force on 1 July 1997 and provides a framework for preventing or resolving disputes about party walls, party structures, boundary walls and excavations near neighbouring buildings. Anyone planning work of the kinds it describes must give the “Adjoining Owner” notice of their intentions. The person doing the work is the “Building Owner”. The Act covers three categories: work to an existing party wall or structure, new building at or astride the boundary line, and excavation within 3 or 6 metres of a neighbouring building or structure, depending on the depth of the hole or proposed foundations.
The parts that matter for a garden gym
Most garden gyms are free-standing outbuildings, so two categories are the most relevant: building up to or astride the boundary, and excavating for foundations near a neighbour’s building.
Building on or against the boundary
The booklet says that anyone planning to build a party wall or party fence wall astride the boundary line must serve notice on the Adjoining Owner, and must also serve notice when planning a wall wholly on their own land but up against the boundary line. There is no right to build astride the boundary without the neighbour’s written consent. If the neighbour does not consent in writing within 14 days to a wall astride the boundary, the owner is obliged to build the wall wholly on their own land and wholly at their own expense, and must compensate for any damage caused by placing footings or foundations under the neighbour’s land. The notice must be served at least one month before work starts.
Excavating for foundations
Notice is required where a person plans to excavate, or excavate for and build foundations for a new building or structure:
- within 3 metres of any part of a neighbour’s building or structure, where the work will go deeper than the neighbour’s foundations; or
- within 6 metres of any part of a neighbour’s building or structure, where the work will meet a line drawn downwards at 45 degrees from the bottom of the neighbour’s foundations.
The booklet says the notice must state whether the owner proposes to strengthen or safeguard the neighbour’s foundations, and must be accompanied by plans and sections showing the location and depth of the excavation or foundation and the location of any proposed building. At least one month’s notice is required before excavation starts. “Adjoining Owners” here can include owners of buildings within those distances even if another owner’s land lies in between.
How to serve a notice
There is no official form. The booklet says the notice should include the owner’s name and address, the address of the building to be worked on, a full description of what is proposed (with plans for excavation), and the proposed start date, which cannot be before the notice period has passed. It should be dated, and it is advisable to state that it is a notice under the Act. It can be delivered in person, sent by post, or emailed if the neighbour has agreed to receive it that way. Notices are valid for a year, so should not be served too long before work begins.
What happens next
If the neighbour consents in writing within 14 days, work may go ahead as agreed. If the neighbour does not respond or objects, a dispute is treated as having arisen, and the Act provides a process for resolving it through surveyors. Owners can agree on a single “Agreed Surveyor”, or each can appoint a surveyor, with the two choosing a third who is called in only if they cannot agree. Surveyors must act impartially and prepare an “award” that sets out the work, when and how it is to be carried out, and any additional protection needed. Usually the Building Owner pays all costs of drawing up the award, including the neighbour’s surveyor’s fees, where the works are solely for their benefit. A neighbour cannot stop a person exercising rights under the Act, but may influence how and when work is done.
Responsibility for damage
The booklet explains that a Building Owner is legally responsible for putting right any damage caused by the work, even if it is caused by a contractor. It also says that the Act contains no enforcement procedure for failing to serve notice, but that a neighbour may seek a court injunction to stop the work, or other legal redress.
Planning and building regulations are separate
The booklet stresses that the Act is separate from planning and building regulations control. Agreement with a neighbour under the Act does not remove any need for planning permission or compliance with building regulations, and obtaining planning permission or complying with building regulations does not remove the need to comply with the Act where it applies.
Frequently asked questions
What if I am not sure the Act applies?
The booklet suggests seeking professional advice if in doubt whether the Act applies to the planned work.
The bottom line
In England and Wales, a garden gym built on the boundary, or with foundations excavated within 3 or 6 metres of a neighbour’s building and below the specified levels, can require notice under the Party Wall etc. Act 1996, usually at least one month before work begins. Planning permission and building regulations do not replace it, and starting without notice risks a court injunction. Talking to the neighbour first and keeping everything in writing is the approach the booklet itself recommends.
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