A garden boundary feature is not automatically a party wall. First establish the boundary and ownership, then check whether masonry construction or alterations engage section 1 or 2.
Locate the boundary rather than guessing
Title plans often indicate general boundaries and do not necessarily establish the precise line to the centimetre. An old fence may have been moved, and a wall's thickness does not prove who owns it. Check deeds and any specific boundary agreements; if the line is disputed, a suitable boundary professional may be needed. Do not treat a party wall notice as a way to settle a separate land ownership dispute.
Different rules for fences and masonry walls
A timber fence is not a party fence wall for the purposes of the Party Wall Act. A wall that is not part of a building but stands on both owners' land can be a party fence wall. A new wall built up to or astride a boundary can raise section 1 questions, and certain work to an existing party fence wall can fall under section 2. The proposed operation matters: routine fence replacement is not equivalent to raising shared brickwork.
Building up to versus across the line
Under the Act, building a wall wholly on your side up to the line of junction is different from proposing a new party wall astride it. The latter needs the adjoining owner's written consent. If they do not consent, the Act does not give a general right to build across their land. Planning restrictions, height limits and structural stability may also need checking independently.
Agree practical details and record them
Discuss foundations, rainwater, appearance, future maintenance and which side needs access. Keep records of any written consent and the final construction position. If a notifiable new boundary wall is planned, use the correct line of junction notice in time. That statutory process does not replace an agreement about who pays for an ordinary fence or resolve every neighbour disagreement.
Does this project need a party wall notice?
A new masonry wall at the line of junction can be a section 1 matter; specified work to an existing party fence wall may involve section 2 and section 3. A normal wooden fence is different. Our builder supports selected simple boundary-wall notice drafts, not boundary ownership adjudication.
Checklist before work begins
- Check deeds and any boundary agreement before setting out.
- Identify whether the feature is timber fencing or a masonry wall.
- Mark the proposed wall wholly on one side or astride the line.
- Secure any required written consent and statutory notice before work.
Think you may need a notice?
Check your work for free. A personalised £4.99 PDF is available only if it fits the builder’s supported notice types.
Related guides
GOV.UK party wall explanatory booklet ↗ · Party Wall etc. Act 1996 ↗
Last reviewed: 22 October 2026. Information is not a substitute for professional assessment of your project.