Party Wall Surveyor Fees: What the Party Wall Process Costs and What to Expect

**The Party Wall etc. Act 1996 — overview**:

The Party Wall Act 1996 sets out a framework for preventing and resolving disputes in relation to party walls, party structures, boundary walls, and excavations near neighbouring buildings. It applies in England and Wales.

The Act applies to three types of work:

*1. Work on a shared wall or structure (Section 2)*:

Work on a party wall (a wall shared by two properties), a party fence wall (a wall on the boundary between two gardens, owned jointly), or a party structure (a floor or ceiling shared between two dwellings, e.g., in a converted house or maisonette). Notifiable works under Section 2 include:

• •Cutting into a party wall (e.g., to form a new opening, insert a beam, install a flashing)
• •Raising a party wall (adding height to a shared wall for a loft conversion)
• •Building a new wall against the boundary between two properties
• •Underpinning a party wall (including any excavation for new footings that extends below or adjacent to the party wall footings)
• •Demolishing and rebuilding a party wall
• •Inserting a damp-proof course in a party wall
• •Any work that would affect the structural strength or support of the wall

*2. New building at or astride the boundary (Section 1)*:

If you wish to build a new wall on the boundary line (building astride the boundary requires neighbour consent; building up to and against the boundary does not require consent but does require notice), Section 1 notice applies. In practice, most London extensions build up to the boundary (not across it) — if this is the case, Section 1 does not apply unless you are actually building on the boundary line itself.

*3. Excavation near neighbour's buildings (Section 6)*:

• Excavations within 3m of a neighbouring structure that will go deeper than the neighbour's foundations (or within 6m where the excavation could affect the neighbour's foundations by drawing a line at 45°) require a Section 6 notice. In practice, this is most commonly triggered by:
• •New extension foundations that are deeper than the existing neighbouring house foundations (which in London Victorian terraces are typically 0.75–1.2m deep — shallower than many Part L-compliant extension foundations required to be deeper to reach firm ground)
• •Basement excavations (always trigger Section 6 in London terraced houses)

**Who is an 'adjoining owner' under the Act**:

• An 'adjoining owner' is any person who owns land within the relevant proximity to the proposed works. In London terraces, this typically includes:
• •The owner(s) of the property immediately to the left and right sharing the party walls
• •Any freeholder whose land is adjacent (relevant for leasehold properties)
• •Possibly the owner of a property behind the garden if a Section 6 excavation extends within 3m of their foundations

*Leaseholders*: In a London terraced house where both the Building Owner and the Adjoining Owner are leaseholders (both properties converted to flats), the Act is more complex — both the leaseholder and the freeholder of each property may need to be notified. This can multiply the number of party wall surveyors involved and the fees.

**Notice requirements and timings**:

| Notice type | Notice period before works start | |---|---| | Section 2 (party wall works) | 2 months before works | | Section 1 (new wall at boundary) | 1 month before works | | Section 6 (excavation notice) | 1 month before works |

Notices must be in writing and must identify the building owner, the adjoining owner, the work proposed, and the intended start date. Standard notice forms are available from the RICS and from the Pyramus and Thisbe Club (the specialist party wall body). The notice must be served on the adjoining owner personally — not just on the property address.

**The three possible responses to a party wall notice**:

*1. Consent (agreement in writing)*:

The adjoining owner can consent in writing to the proposed works within 14 days of receiving the notice. If consent is given, the Party Wall Act process is complete — no surveyor is needed, no Award is required. The building owner is free to proceed with the works.

• *In practice*, consent without a surveyor is common where:
• •The neighbours have a good relationship
• •The works are straightforward and low-risk (a loft conversion where the party wall work is limited to raising the party wall — no underpinning, no major cutting)
• •The adjoining owner has seen the drawings and is satisfied there is no material risk to their property

*2. Dissent (counter-notice or appointment of surveyor)*:

If the adjoining owner does not respond within 14 days, or responds by dissenting (refusing consent), a dispute is deemed to exist under the Act and surveyors must be appointed. Both parties must appoint surveyors.

*The surveyor appointment options*:

• •*Agreed surveyor*: Both parties appoint the same party wall surveyor by written agreement. The agreed surveyor acts impartially on behalf of both parties. This is the most efficient and cost-effective route — typically results in lower overall fees because only one surveyor is involved, but both parties must agree on the same person
• •*Two surveyors*: Each party appoints their own surveyor. The two surveyors then agree the Award between them (or, if they cannot agree, they appoint a Third Surveyor whose decision is binding)

**The Schedule of Condition**:

Before any notifiable works begin, the party wall surveyor prepares a Schedule of Condition — a photographic and written record of the condition of the adjoining owner's property at the time immediately before the works start. This establishes the baseline against which any damage claims can be assessed during or after the works. The Schedule of Condition is one of the most important protective documents in the party wall process — for both the building owner (proving that claimed damage did not exist before the works) and the adjoining owner (proving that new damage occurred as a result of the works).

**The Party Wall Award**:

• The Award is a legally binding document prepared by the party wall surveyor(s) that sets out:
• •The works to be carried out
• •The method of carrying out the works (construction sequence, working hours, noise restrictions)
• •Any protective measures required for the adjoining property during the works
• •Access rights to the adjoining property if required for the works
• •The Schedule of Condition (appended to the Award)
• •The fee to be paid to the surveyor(s) and by whom

The Award is served on both parties and has the force of a statutory document — it can be enforced under the Party Wall Act if either party fails to comply. An Award can be appealed to the County Court within 14 days of service, but appeals are relatively rare and typically succeed only if the Award is procedurally defective.

**Timeline for the full party wall process**:

| Step | Typical duration | |---|---| | Notice served | Day 0 | | Waiting for response (dispute deemed at 14 days without response) | 14 days | | Surveyor appointments | 2–5 days after dispute | | Schedule of condition survey | 1–3 weeks after surveyor appointment | | Draft Award circulated and agreed | 2–4 weeks | | Award served | Day 60–90 from notice | | Works can start (if Award served before 2-month notice expires) | Day 60 from notice |

*The critical timing point*: Section 2 works require 2 months' notice. If the full survey and Award process takes longer than 2 months from the date the notice was served, the building owner must wait for the Award before starting works — even if the 2-month notice period has expired. In practice, this means that notice should be served as early as possible (typically at the same time as the planning application is submitted, or as soon as the structural design is sufficiently advanced) to maximise the likelihood that the Award is ready before the intended start on site.

**Typical party wall surveyor fees in London (2025)**:

| Service | Typical fee range | |---|---| | Building owner's surveyor — preparation of notice(s) only | £250–£500 | | Building owner's surveyor — full process (notice, Schedule, Award) | £800–£1,500 | | Adjoining owner's surveyor — full process (instruction, Schedule, Award) | £700–£1,400 | | Agreed surveyor — full process (both parties, one surveyor) | £900–£1,600 | | Additional properties (each additional adjoining owner beyond the first) | +£400–£900 each |

*Hourly rates*: Most party wall surveyors charge by hourly rate (typically £120–£250/hour for an RICS-qualified party wall surveyor in London) rather than a fixed fee — the total cost depends on the complexity of the works and the level of co-operation between the parties. A complex dispute, an unresponsive or obstructive adjoining owner, or unusually detailed construction can drive fees significantly higher than the ranges above.

**Who pays party wall surveyor fees**:

Under the Party Wall Act, the building owner (the person doing the works) pays all the costs of the party wall process — including the adjoining owner's surveyor's fees. This is one of the most surprising aspects of the Act for building owners: not only must you notify your neighbour and give them the right to appoint their own surveyor, but you must also pay your neighbour's surveyor's fees.

The rationale is that the building owner is benefiting from the works (improving their property) and is imposing a potential risk of disruption on the adjoining owner — the Act allocates the cost of managing that risk to the person creating it.

*Exception*: Where an agreed surveyor is appointed (both parties agree to use the same surveyor), the single fee is paid by the building owner and is typically lower than the combined cost of two separate surveyors.

**Practical cost scenarios for a London extension**:

*Scenario 1 — Rear extension with one adjoining owner (one party wall), neighbour consents*: No party wall surveyor needed. Cost: nil.

*Scenario 2 — Rear extension with one adjoining owner, neighbour appoints own surveyor*: Building owner's surveyor: ~£1,000; Adjoining owner's surveyor: ~£1,000; Total paid by building owner: ~£2,000.

*Scenario 3 — Rear extension to a mid-terrace, two neighbours, both appoint own surveyors*: Building owner's surveyor (both walls): ~£1,200; Neighbour 1 surveyor: ~£900; Neighbour 2 surveyor: ~£900; Total paid by building owner: ~£3,000.

*Scenario 4 — Loft conversion with party wall raising, two neighbours, complex works*: Building owner's surveyor: ~£1,500; Two adjoining owners' surveyors: ~£900 each; Total: ~£3,300+.

*Scenario 5 — Basement excavation (Section 6), two neighbours, high-risk works*: Party wall surveyors' fees for a basement project are often significantly higher due to the complexity of the works and the level of monitoring required; total fees of £5,000–£15,000 are not unusual for a London basement project with two adjoining owners.

**How to keep party wall costs manageable**:

• •*Serve notice early* — the earlier you serve notice, the less likely it is that party wall delays hold up your start on site
• •*Maintain a good relationship with neighbours* — a neighbour who has been kept informed of your plans, who has seen the drawings, and who understands the impact is more likely to consent without appointing a separate surveyor
• •*Propose an agreed surveyor* — approach the neighbour before the formal notice period and suggest an agreed surveyor; if both parties agree, the total fee is lower than two separate surveyors
• •*Use a party wall surveyor who specialises in the work* — a specialist party wall surveyor will prepare a Schedule and Award efficiently; a general surveyor unfamiliar with the Act's procedural requirements may take longer and charge more
• •*Do not start works before the Award is served* — starting notifiable works without a completed Award (or written consent from the adjoining owner) is a statutory breach of the Party Wall Act; it makes the building owner liable to an injunction, potentially requiring the works to stop and the structure to be dismantled