Party Wall Surveyors London, Notices. Awards. Disputes. Handled.
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From the first notice through to the completed Award, the party wall process follows a clear statutory sequence. Lenio manages every stage for Building Owners and Adjoining Owners across London.
From the first notice through to the completed Award, the party wall process follows a clear statutory sequence. Lenio manages every stage for Building Owners and Adjoining Owners across London.
The Party Wall etc. Act 1996 sets out a statutory process for works that affect shared walls, boundary lines and neighbouring foundations. This process runs separately from planning permission and applies regardless of whether a planning application has been approved.
In practice, the party wall process starts with a review of the proposed works and ends once construction completes in line with the Party Wall Award. In between, there are defined steps that both the Building Owner and the Adjoining Owner must follow under the Act.
Below is the full party wall process as Lenio manages it, from initial review through to post-construction support. Each stage follows directly from the one before.
We assess the proposed works against the Party Wall etc. Act 1996. This tells us which sections apply and identifies every Adjoining Owner who must receive notice before the works begin.
We prepare and serve the correct Party Wall Notice for each affected Adjoining Owner. Section 3 requires two months' notice. Section 1 and Section 6 require one month. All notices meet the Act's requirements.
The Adjoining Owner has 14 days to respond. They may consent, dissent or serve a counter-notice. If no response arrives within 14 days, a dispute is treated as having arisen under the Act.
If the Adjoining Owner dissents or is deemed to have dissented, both parties appoint surveyors. Each appoints their own, or both may agree on a single Agreed Surveyor to manage the process for both sides.
Before works begin, we carry out a Schedule of Condition survey of the Adjoining Owner's property. This creates a written and photographic record, protecting both parties if damage is alleged during or after construction.
The appointed surveyors prepare a Party Wall Award. This legally binding document sets out how works proceed, access arrangements and protective measures. Both parties have 14 days to appeal once it is served.
Works proceed in accordance with the Party Wall Award. Lenio remains available throughout the build to clarify Award provisions for contractors, advise on access requirements and ensure construction stays within the agreed conditions.
Once works complete, we compare the finished construction against the Schedule of Condition to assess whether any damage is attributable to the works. We advise both parties and provide written responses where needed.
Speak directly with a party wall surveyor in London. In one short call, we confirm which stage applies and what needs to happen next.
The Party Wall etc. Act 1996 covers three distinct types of works, each with its own notice requirement. Identifying the correct notice is the first practical step in the party wall process for any Building Owner.
Covers new walls built at or on the boundary line. One month's notice is required before works begin.
Covers works on an existing party wall or shared structure. Two months' notice is required before works begin.
Covers excavation within 3 metres or 6 metres of a neighbouring structure, depending on depth. One month's notice is required.
In some projects, more than one section applies. We confirm which notices are needed and serve all of them correctly on your behalf.
The party wall process is a statutory legal procedure. Mistakes in notices, surveyor appointments or Award conditions are difficult to correct once works are underway. For this reason, the right support from the start protects both your project and your relationship with your neighbour.
In London, most renovation projects involve shared walls, tight boundary lines or excavation near neighbouring foundations. As a result, the party wall process applies more often here than in most other parts of the country.
Sadadcharam Easwaran is a Chartered Civil Engineer and Member of the Institution of Civil Engineers (ICE). He is also a Chartered Building Engineer and Member of the Chartered Association of Building Engineers (CABE). With over 20 years of party wall practice across London, he leads every instruction at Lenio.
Lenio manages the party wall process in London with over 20 years of practice and two chartered professional memberships.
If an Adjoining Owner does not respond to a Party Wall Notice within 14 days, the Act treats this as a dispute having arisen. This is called deemed dissent.
At that point, surveyors must be appointed and the party wall process continues through formal dispute resolution, even though no active objection was made.
No. A dissent does not give an Adjoining Owner the right to halt notifiable works. It triggers the formal process under the Act, which leads to a Party Wall Award setting out how works may proceed.
In most cases, the party wall process reaches a resolution that allows the Building Owner’s project to continue. The Act is designed to allow works to proceed, not prevent them.
When each party appoints their own surveyor, a Third Surveyor is also selected at the same time. They take no active role unless the two appointed surveyors cannot agree on a matter.
If a dispute arises between surveyors, either may refer it to the Third Surveyor for a binding determination. Their appointment is a statutory safeguard built into the process.
No. Where the party wall process requires a Party Wall Award, works that fall under the Act should not start until surveyors have served the Award. Starting beforehand puts the Building Owner in breach of the Act.
In practice, this means beginning the party wall process early enough that the Award is in place before your contractor starts on site.
Yes. Planning permission and the party wall process are separate legal requirements. One does not replace the other.
Securing planning approval confirms that your local authority permits the development. However, it does not discharge your obligations under the Party Wall etc. Act 1996. Both processes must be followed independently.
Each section of the Act covers a different type of work. Section 1 applies to new walls at or near the boundary. Section 3 covers works on an existing party wall. Section 6 applies to excavation near neighbouring structures.
Some projects trigger more than one section. In those cases, the correct notices for each section must be served on all affected Adjoining Owners.
Yes. The Act does not require a surveyor to serve the notice. However, an incorrectly drafted or served notice can be invalid, which means the full notice period must restart.
A surveyor ensures the notice identifies the correct works, reaches every affected Adjoining Owner and meets the legal requirements of the Act from the outset.
If notifiable works proceed without a valid Party Wall Notice, the Adjoining Owner can apply for an injunction to stop them. They may also pursue a claim for any damage caused.
In addition, skipping the party wall process removes the legal protections it provides for the Building Owner. The risks of proceeding without notice significantly outweigh the time saved.
Whether your project is at the planning stage or already underway, the right starting point is a conversation with a party wall surveyor in London. The call is free and there is no obligation.
