Party Wall Surveyor Fees and Award Costs London 2025: What to Expect and How the Process Works

**The Party Wall etc. Act 1996 applies to three categories of work**:

**1. Works to the party wall itself (Section 2 works)**:

The most commonly relevant section for London building work. A party wall is a wall that stands on the boundary between two properties and is used by both owners as part of their respective structures. Section 2 of the Act covers 'notifiable works' to the party wall — including:

• •Cutting into the party wall (to install beams; steels; joist hangers; or to insert a damp proof course)
• •Raising the party wall height
• •Underpinning the party wall
• •Demolishing and rebuilding part of the party wall
• •Cutting away chimney breasts from the party wall
• •Making good or taking down any part of the party wall
• •Inserting a flashing
• •Any works that will or may affect the structural strength or support function of the party wall

*Common London projects triggering Section 2 notices*:

• •**Loft conversions**: where the conversion involves cutting into the party wall (to insert a steel beam; to install restraint straps; to form joist hangers in the party wall for the new floor structure), a Section 2 notice is required
• •**Chimney breast removal**: removing a chimney breast on the ground floor that is attached to the party wall — the remaining chimney structure above is supported by the party wall. Section 2 notice required
• •**RSJ (steel beam) installation**: where the beam is carried in the party wall — steel bearing pads installed in pockets cut into the party wall. Section 2 notice required
• •**Internal remodelling**: where a load-bearing internal wall that is part of the party wall structure is being removed or altered

**2. Excavation near the party wall (Section 6 works)**:

Section 6 of the Act requires notice where excavation is carried out within 3m (or 6m for some deeper structures) of the adjacent owner's structure and where the bottom of the excavation is below the bottom of the adjacent owner's foundation.

*Common London projects triggering Section 6 notices*:

• •**Rear extensions with new foundations**: where the extension foundation is within 3m of the neighbouring house wall and the extension foundation is deeper than the neighbouring house foundation. In London Clay, where the structural engineer specifies extension foundations at 1.2–2.5m depth, and the existing neighbouring house foundations are at 0.9–1.0m depth (typical for Victorian terraces), a Section 6 notice is almost always required for rear extensions near side or rear boundaries
• •**Basement excavation**: any basement excavation below the level of neighbouring foundations within 6m requires Section 6 notice
• •**Garden room with new foundations**: if the garden room foundation is within 3m of the neighbouring fence/structure and below the neighbour's foundation depth

**3. New wall on the boundary line (Section 1 works)**:

• Section 1 requires notice for building a new wall on the line of junction (boundary) between two properties. This applies to:
• •A new boundary wall between two properties built to straddle the boundary line (a party fence wall)
• •A new external wall of an extension that is built up to (but not on) the boundary — no notice required; the wall sits entirely within the building owner's property

**What work does NOT trigger the Party Wall Act?**

• •A rear extension that does not excavate within 3m of a neighbouring structure and does not involve any work to the party wall itself (the extension footings are within the owner's land and at a shallower depth than the neighbour's foundations)
• •Redecorating, replastering, or non-structural internal work to the party wall side
• •Work to the rear elevation of the property that does not involve the party wall at all
• •A loft conversion that does not cut into or alter the party wall (very rare in London terrace loft conversions — most do involve the party wall in some way)

**The notice requirement**:

• A party wall notice must be served in writing on the adjoining owner (the owner of the adjacent property — not the tenant). Notices must be served:
• •**Section 2 works**: minimum **2 months** before the proposed start of the notifiable works
• •**Section 6 works (excavation)**: minimum **1 month** before the proposed start of the excavation
• •**Section 1 works**: minimum **1 month** before the proposed start

The notice must state: the building owner's name; the address; a description of the proposed works; a proposed start date for the works. There is no standard government form — notices can be drafted by the building owner, their architect, or a party wall surveyor. Many party wall surveyors will draft and serve the notices as part of their service.

**The response options for the adjoining owner**:

*1. Consent (Agreement in Writing)*:

The adjoining owner can consent to the proposed works by signing a response acknowledging receipt and agreeing to the works proceeding. If the adjoining owner consents, no party wall surveyor appointment is required and no Award needs to be produced. Works can proceed on the agreed timescale. **The building owner is still obliged to comply with the Act's requirements during the works (schedule of condition; access for inspection; making good) even with a written consent.** A written consent saves the surveyor fees — but both parties should understand what they are consenting to.

*2. Dispute / Counter-Notice (requiring a Party Wall Award)*:

If the adjoining owner disputes the works (or simply does not respond within 14 days of receiving the notice), a **dispute is deemed to have arisen** under the Act. Both parties must appoint party wall surveyors to produce a Party Wall Award.

*3. Failure to respond (deemed dispute)*:

If the adjoining owner does not respond within 14 days of the notice being served, a dispute is deemed and the building owner can appoint an 'agreed surveyor' to act for both parties — or can trigger the two-surveyor process.

**The two routes when a Party Wall Award is required**:

*Route 1: Agreed Surveyor (acting for both parties)*:

• Both the building owner and the adjoining owner agree to appoint a single party wall surveyor to act as the 'agreed surveyor' for both parties. The agreed surveyor:
• •Acts impartially for both parties (not as the building owner's representative)
• •Carries out the pre-works schedule of condition survey of the adjoining owner's property
• •Produces the Party Wall Award document
• •Inspects the works during construction to verify compliance with the Award
• •Reviews any damage claims at the end of the works

• *Advantages of the agreed surveyor route*:
• •Single surveyor fee rather than two independent surveyor fees — significantly less expensive
• •Faster process (one surveyor rather than two to coordinate)
• •Suitable for straightforward, non-contentious situations where both parties have broadly similar interests

*Disadvantage*: neither party has independent representation. If a serious dispute arises during or after the works about damage or compensation, the agreed surveyor must act impartially — they do not advocate for either party.

*Route 2: Two appointed surveyors (the standard route when the adjoining owner is cautious)*:

• Where the adjoining owner is concerned about the works, wants independent representation, or has received advice recommending they appoint their own surveyor, both parties appoint separate surveyors. The two appointed surveyors:
• •Act on behalf of their respective appointing parties
• •Jointly agree the terms of the Party Wall Award
• •If the two surveyors cannot agree, they appoint a third surveyor (a referee) to determine the disputed point
• •Each surveyor carries out their own schedule of condition inspection of the relevant structures

*Who pays the party wall surveyor fees?*

• The general principle is that **the building owner (the person doing the works) pays for the party wall process**. Specifically:
• •The building owner pays: the agreed surveyor's fees; OR their own appointed surveyor's fees AND the adjoining owner's appointed surveyor's reasonable fees
• •The adjoining owner pays: nothing, in the standard case where they are not obstructing the process

This is an important point for budgeting: the cost of the adjoining owner's surveyor (appointed independently without any agreement from the building owner) falls on the building owner. If the adjoining owner appoints an expensive party wall surveyor, the building owner must pay that surveyor's reasonable fees. In practice, 'reasonable' is judged by the third surveyor in the event of a dispute — excessively high fees can be challenged. However, a highly experienced or specialised party wall surveyor legitimately commands higher fees.

*Where multiple adjoining owners are involved*: a typical London Victorian terrace rear extension may trigger party wall obligations to two adjoining owners — the immediate left and right neighbours (for section 6 excavation) and potentially the rear neighbour (for excavation within 3m). Each adjoining owner can independently appoint their own surveyor. The building owner pays all the fees — for two or three sets of surveyor fees on a project with multiple adjoining owners, costs increase accordingly.

**Party wall surveyor fee structures**:

Party wall surveyors in London charge for their services in two main ways: hourly rate billing; or fixed-fee packages. The choice of billing structure affects the total cost significantly.

• *Hourly rate billing (most common for complex or disputed cases)*:
• •Junior party wall surveyor: £150–£225/hour
• •Experienced party wall surveyor (MRICS; FRICS; Members of the Pyramus & Thisbe Club — the party wall speciality body): £225–£375/hour
• •Very senior or speciality surveyor (complex basement or historic building cases): £375–£600+/hour

Time charges include: notice review and advice; schedule of condition survey; Award drafting; correspondence with the other surveyor; inspection during works; final completion and making-good inspection.

*Fixed-fee packages for straightforward residential cases*:

Many party wall surveyors offer fixed-fee packages for standard residential cases — a loft conversion or rear extension with a single adjoining owner:

• •**Agreed surveyor fixed fee (both parties; straightforward loft conversion or rear extension)**: £800–£1,800 total (for both parties; paid by the building owner)
• •**Building owner's own surveyor fixed fee (two-surveyor process)**: £600–£1,200 for the building owner's surveyor alone; plus the adjoining owner's surveyor's fee (below)
• •**Adjoining owner's appointed surveyor fixed fee (standard residential; non-contentious)**: £600–£1,400 for the adjoining owner's surveyor (paid by the building owner)

*Typical total party wall costs for common London projects in 2025*:

| Project type | Adjoining owners involved | Process | Estimated total cost (building owner pays) | |---|---|---|---| | Single-storey rear extension; foundations within 3m of rear boundary | 1 (rear neighbour) | Agreed surveyor | £800–£1,800 | | Single-storey rear extension; foundations within 3m of side boundary | 1 (side neighbour) | Agreed surveyor | £800–£1,800 | | Single-storey rear extension; foundations within 3m of BOTH side and rear boundaries | 2 (side + rear) | 2 agreed surveyors | £1,600–£3,600 | | Victorian terrace loft conversion (cuts into party wall) | 2 (both immediate neighbours) | Agreed surveyors | £1,600–£3,600 | | Victorian terrace loft conversion; one neighbour appoints own surveyor | 2 (one agreed; one own surveyor) | Mixed | £2,000–£5,000 | | Both neighbours appoint own surveyors (non-contentious but each wants representation) | 2 | Two-surveyor process (×2) | £3,000–£7,000 | | Contentious case (dispute over damage; third surveyor invoked) | 1+ | Full dispute process | £5,000–£15,000+ | | Full basement excavation (multiple neighbours + complex Award) | 3–5 | Two-surveyor process (multiple) | £8,000–£20,000+ |

**The Schedule of Condition — what it is and why it matters**:

The Party Wall Award almost always requires a Schedule of Condition to be prepared before works commence. A Schedule of Condition is a photographic and written record of the existing state of the adjoining owner's property — particularly the rooms and structural elements closest to the proposed works. The purpose is to establish a baseline 'before' condition so that any damage caused during the works can be identified, assessed, and remedied by the building owner.

• *What is included in a Schedule of Condition*:
• •Photographs of all walls, ceilings, and floors in the rooms adjacent to the party wall
• •Close-up photographs of any existing cracks, staining, or defects in the masonry, plasterwork, or joinery
• •Written notes describing the condition of the finishes
• •Measurements of any significant existing cracks (crack width gauge; photographic record)

The Schedule of Condition is appended to the Party Wall Award and signed by the party wall surveyor(s). During and after the works, the surveyor inspects the adjoining property and compares the current condition with the schedule. Any new cracks, damage, or deterioration that can be attributed to the building works is the building owner's responsibility to remedy.

• *Common damage claims in London party wall work*:
• •New cracking in the adjoining owner's plasterwork (hairline cracks from vibration during demolition or concrete breaking)
• •Cracking in the chimney breast of the adjoining property (from vibration or from movement in the party wall during loft conversion structural works)
• •Settlement cracking in finishes adjacent to new foundations (temporary; usually subsides as the new structure settles)

If the building owner's contractor causes damage and disputes liability, the party wall surveyor reviews the schedule of condition, inspects the damage, and issues a direction within the Award framework — the building owner must remedy the damage or pay for it. This is why a thorough schedule of condition (not a superficial one) is important: it protects both the adjoining owner (evidence of new damage) and the building owner (evidence that a crack was pre-existing and not caused by their works).