Party Wall for Adjoining Owners

A party wall notice means your neighbour is planning building work that affects your property in some way — work to a shared wall, excavation near your foundations, or construction on the boundary line. The Party Wall etc. Act 1996 requires them to notify you before starting.

This isn’t a courtesy letter. It’s a formal legal notice that triggers a process with specific timescales and implications. Understanding what it means — and what you should do — matters. The good news: as the adjoining owner, your surveyor’s reasonable fees are usually the building owner’s to pay — so appoint us as soon as a notice arrives.

The notice should describe:

• What work your neighbour is planning
• When they intend to start
• What rights you have to respond
• How to contact their surveyor

It might be a Section 1 notice (new wall on the boundary), Section 3 notice (work to an existing party wall), or Section 6 notice (excavation near your building). The type affects your rights and concerns, but the basic process is similar.

When you receive a party wall notice, you have three choices:

1. Consent

You can simply agree to the work proceeding. This is appropriate if:

• The work is minor and you’re not concerned about damage
• You trust your neighbour and their contractor
• Your property is robust and unlikely to be affected
• You don’t want the formality of the award process

If you consent in writing, your neighbour can proceed with the work. You still have common law rights if damage occurs, but you won’t have the additional protections an award provides.

2. Dissent and agree to an agreed surveyor

You can dissent from the notice but agree that a single surveyor (an “agreed surveyor”) should act for both parties. This surveyor prepares an award that governs the work.

This approach:

• Provides the protection of a formal award
• Is usually quicker and cheaper than two surveyors
• Works well when relationships are reasonable
• Requires you to trust the surveyor to act impartially

The building owner typically pays the agreed surveyor’s fees.

3. Dissent and appoint your own surveyor

You can dissent and appoint your own party wall surveyor to act on your behalf. Your surveyor then works with your neighbour’s surveyor to prepare an award.

This approach:

• Gives you someone representing specifically your interests
• Is appropriate for substantial work with real damage risk
• Provides more rigorous protection
• Is advisable when relationships are difficult
• Results in higher fees (two surveyors instead of one)

The building owner generally pays both surveyors’ fees — your surveyor’s appointment doesn’t cost you directly.

“The building owner pays anyway, so what’s the difference?”

An agreed surveyor must act impartially. Your own surveyor acts specifically for you:

• Advocacy: They represent your interests in discussions with the building owner’s surveyor
• Attention: Their focus is solely on your property and protection
• Experience of your concerns: They understand what you’re worried about
• Independence: No risk of appearing to favour the party who’s paying more

For minor work, an agreed surveyor is often fine. For significant excavation near your foundations, a loft conversion affecting your roof space, or work by a neighbour you don’t entirely trust — your own surveyor provides stronger protection.

A party wall award is a legal document that protects you throughout the building work:

Records your property’s condition

Before work starts, your property is inspected and documented — cracks, decorations, finishes, everything that might be affected. This “schedule of condition” proves what was there before. If damage appears later, there’s evidence it wasn’t pre-existing.

Controls how work is done

The award sets conditions: working hours, noise restrictions, access requirements, methodology constraints. Your surveyor ensures these conditions are reasonable and protective.

Creates a clear process for damage

If your property is damaged, the award provides a mechanism: report the damage, have it inspected, require the building owner to make good. Without an award, you’re relying on ordinary legal claims, which are slower and harder.

Allocates responsibility

The award makes clear who’s responsible for what — typically, the building owner bears the cost of any damage their work causes.

When you appoint us, we:

Inspect your property

We create a detailed schedule of condition, documenting existing cracks, decorations, finishes, and anything that might show damage later. This record protects you.

Review the proposed works

We assess what’s planned, what risks it creates for your property, and what protections are appropriate.

Negotiate the award

Working with the building owner’s surveyor, we ensure the award includes appropriate conditions: method statements, monitoring requirements, working hours, access arrangements, and protection measures.

Monitor if required

For significant work, we can monitor progress and condition throughout, catching problems early.

Handle any damage claims

If damage occurs, we document it, assess whether it’s caused by the works, and ensure the building owner makes good.

Excavation near your foundations

This is where the real risk lies. Deep excavation close to your building can cause settlement, cracking, and structural issues. Section 6 notices for basement excavations deserve careful attention.

Underpinning affecting your property

If your neighbour’s work involves underpinning, and that underpinning affects shared foundations, the risks are significant. Detailed engineering review and monitoring may be appropriate.

Work to party walls

Cutting into shared walls, removing chimney breasts, inserting beams — these affect structural elements you share. The work needs proper engineering and careful execution.

Access requirements

The building owner may need access to your property for their works. The award governs this — you shouldn’t agree to open-ended access rights.

Once you receive a notice, you have 14 days to respond. If you don’t respond, you’re deemed to have dissented — the award process proceeds anyway.

If you want to appoint your own surveyor, do it within that 14 days. If you don’t appoint, the building owner’s surveyor can appoint one for you (at the building owner’s cost), but you lose the ability to choose.

Generally, the building owner pays your surveyor’s reasonable fees. This is the Act’s default position — you shouldn’t be out of pocket for protecting yourself against someone else’s building work.

There are exceptions (if you’re also doing work, or if the award allocates costs differently), but in standard cases, your protection comes at no direct cost to you.

If you notice damage during or after your neighbour’s works:

1. Document it — Photograph everything, note when you first saw it
2. Report it — Notify the building owner and the surveyors in writing
3. Don’t repair it yet — Let the surveyors inspect and record it
4. Follow the award process — The award should include procedures for this

Your schedule of condition is the evidence that this damage is new. The building owner’s liability for making good is usually clear.

Don’t ignore a party wall notice. The 14-day response period is real. If you want control over the process — including choosing your own surveyor — respond promptly.

Even if you’re minded to consent, consider whether a proper award might be worthwhile. The protection costs you nothing (the building owner pays), and you may be glad of it if problems arise.

If damage occurs:

• Building Pathology & Defect Analysis — Investigating damage to determine cause and remedy

If you’re also doing work:

• Party Wall for Building Owners — When you’re the one carrying out notifiable work