A party wall surveyor in London makes sure building work affecting a shared wall, boundary or nearby foundation is handled correctly under the Party Wall etc. Act 1996. LENIO gives homeowners, developers and adjoining owners clear, practical advice at every stage.
Most people arrive with a practical question. “Do I need to tell my neighbour?”, “Can my neighbour object?”, or “What should I do with this notice?” Choose the route that sounds closest to your situation.
Planning an extension, loft conversion or basement works? If the work affects a shared wall, boundary or nearby foundation, you may need to serve a Party Wall Notice before building begins.
Our Party Wall Surveyors in London can review your plans and confirm whether the Act applies.
Guidance for Building Owners
If your neighbour has sent you a Party Wall Notice, you have rights and options. You can consent, dissent or ask for more information before you respond.
LENIO can help you understand the notice and what your options are.
Guidance for Adjoining Owners
That is completely normal. Party Wall matters are not always obvious early on. Send us your drawings, notice or a short description and we will tell you exactly where you stand.
Just share what you have. We will take a look and explain your next step.
Call LENIO TodayWe are a London-based Party Wall surveying practice working with homeowners, neighbours and property professionals across the city.
We handle the full Party Wall process so you do not have to manage it alone. We review what your project needs, make sure the right people are notified, and manage each stage from the first notice through to completion.
You do not need to understand the Party Wall Act 1996 before you call. That is what we are here for. We explain what applies, what does not, and what needs to happen next in clear, practical language.
Speak to a Party Wall Surveyor in LondonThe Party Wall process uses specific legal terms, but the idea is simple. One person is planning the works. Another person may be affected by those works.
If you are planning the works, you are usually the Building Owner.
As the Building Owner, you may need to notify affected neighbours before carrying out certain works. This applies to work on a party wall, shared structure, boundary line or excavation near neighbouring foundations.
Common examples include rear extensions, side extensions, loft conversions, basement works, chimney breast removal and new walls at or near a boundary.
Our Party Wall Surveyors in London help Building Owners understand what notices are needed, how the process works and what happens at each stage.
Read Building Owner GuidanceIf your neighbour is planning the works, you are usually the Adjoining Owner.
As the Adjoining Owner, you may receive a formal Party Wall Notice before works start next door. You do not need to panic. You should understand what the notice means before you respond.
You may want advice on whether the notice is valid, whether a Schedule of Condition is needed, and what your options are before responding.
Our Party Wall Surveyors in London help Adjoining Owners understand their rights and make sure their property is properly protected throughout.
Read Adjoining Owner GuidanceMany homeowners assume that obtaining planning permission or building regulations approval automatically satisfies their obligations under the Party Wall etc. Act 1996. However, these are separate legal requirements.
If your proposed works involve a shared wall, boundary structure, or excavation near a neighbouring property, you may be required to serve formal Party Wall Notices and follow the procedures set out in the Act before construction can commence.
At LENIO Party Wall Surveyors, we provide expert guidance throughout the process, helping property owners meet their legal obligations while minimising the risk of delays and disputes.
If you are unsure, the safest first step is to have the proposed works reviewed before construction starts.
See If Your Project Needs a Notice
Building a new wall on or up to the boundary line between two properties. The Building Owner must notify the Adjoining Owner before work begins.
Cutting into, raising, thickening, underpinning or removing part of a shared wall for example inserting steel beams for a loft conversion or removing a chimney breast.
Excavating within 3 metres (and deeper than the neighbour’s foundations) or within 6 metres at a defined angle common with extensions and basements.
Not sure which section applies? Read the GOV.UK Party Wall explanatory booklet, or call LENIO and we will confirm it for your project.
Party Wall matters arise frequently in London due to the close proximity of neighbouring properties. Terraced houses, semi-detached homes, converted flats, and properties with shared boundaries often require compliance with the Party Wall etc. Act 1996 when building works are proposed.
Many of the most common home improvement projects in London can trigger Party Wall requirements. For example, a loft conversion may involve inserting structural steel beams into a party wall, while a house extension may require excavation close to neighbouring foundations or construction along a shared boundary. Basement excavations often present the most complex Party Wall considerations due to the depth of excavation and the potential impact on adjoining structures.
The Party Wall Act 1996 is designed to facilitate building works while protecting the interests of neighbouring property owners. It establishes a clear legal framework for serving a Party Wall Notice, recording the condition of adjoining properties where appropriate, and resolving any Party Wall Disputes through the preparation of a legally binding Party Wall Award.
At LENIO Party Wall Surveyors, we assist homeowners, developers, and adjoining owners across London with Party Wall Notices, Awards, Schedules of Condition, and dispute resolution, ensuring projects proceed efficiently and in full compliance with the legislation.
Talk to the LENIO Party Wall Surveyor TeamWhether you are in a Victorian terrace in South London, a conversion flat in East London or a new-build near a shared boundary, the same Party Wall rules apply.
LENIO handles the complete Party Wall process for London homeowners, Building Owners and Adjoining Owners. Whether you need one notice or support through a full Party Wall Award, we manage each stage so you do not have to.
We prepare and serve the correct Party Wall Notices so your neighbours are formally informed before notifiable works begin. Correctly drafted notices prevent delays, invalid process and disputes before your project even gets started.
Learn About Party Wall NoticesA Schedule of Condition records the condition of a neighbouring property before works start, with written notes and photographs. It protects both the Building Owner and Adjoining Owner if any damage is alleged during or after construction.
How Schedule of Condition WorksIf a neighbour dissents or does not respond, a Party Wall Dispute arises and surveyors prepare a Party Wall Award in London. This legally binding document sets out how and when works proceed, so your project can continue through the correct route.
How Party Wall Awards WorkWe act for Building Owners planning works near a shared wall or boundary. We help you serve the right notices, follow the correct process and keep your project moving without unnecessary delays or complications.
Planning Works?We advise Adjoining Owners who have received a Party Wall Notice or are concerned about works next door. We help you understand your rights, check the notice and make sure your property is properly protected.
Received a Notice?Where both owners agree, a single impartial surveyor handles the full Party Wall process for both sides. This can simplify the process, reduce costs and still protect both parties properly under the Act.
Ask About This RouteAs your party wall surveyor in London, LENIO manages every stage of the party wall award process. From the initial review through to post-construction support, we keep both parties informed throughout.
Send us your drawings, notice or a short explanation of the proposed works. If you do not have everything ready yet, we can still help you understand what may be needed.
We review the nature of your works and confirm whether the Party Wall Act 1996 is likely to apply. We will tell you exactly what notices may be required and what needs to happen next.
Where notices are needed, we prepare and serve them correctly on all affected Adjoining Owners. Each notice is drafted to meet the legal requirements, with the correct time period before works begin.
If neighbours consent, the process can move forward smoothly. If they dissent or do not reply, surveyors are appointed and the matter is handled through the correct process under the Party Wall Act 1996.
Where required, we complete a Schedule of Condition and prepare a Party Wall Award. Both documents protect you during the works and set out clearly how and when construction should proceed.
Many Party Wall issues can be avoided with early professional advice. Common problems often arise when property owners assume that planning permission or building regulations approval covers their obligations under the Party Wall etc. Act 1996, or when construction begins before the appropriate Party Wall Notice has been served.
Seeking advice from an experienced Party Wall Surveyor at an early stage allows you to establish whether the Act applies to your project, identify any affected adjoining owners, and complete the necessary Party Wall procedures before works are scheduled to commence.
Taking a proactive approach can also help preserve positive neighbour relationships. Building works such as loft conversions, extensions, and basement excavations can be disruptive, and uncertainty regarding legal rights, property condition, or responsibility for potential damage can lead to unnecessary concerns. A properly managed Party Wall process provides clarity for all parties, reduces the risk of a Party Wall Dispute, and helps ensure that any required Party Wall Award is agreed efficiently and professionally.
At LENIO Party Wall Surveyors, we guide homeowners, developers, and adjoining owners through every stage of the process, helping projects proceed smoothly, efficiently, and in full compliance with the law.
Get Advice Before Works Begin
We act for Building Owners and Adjoining Owners right across the capital. Choose your area for local Party Wall guidance.
Party Wall Surveyors covering North London boroughs and the surrounding area.
North London Party Wall SurveyorsParty Wall Surveyors covering South London boroughs and the surrounding area.
South London Party Wall SurveyorsParty Wall Surveyors covering East London boroughs and the surrounding area.
East London Party Wall SurveyorsParty Wall Surveyors covering West London boroughs and the surrounding area.
West London Party Wall SurveyorsParty Wall Surveyors covering Central London boroughs and the surrounding area.
Central London Party Wall Surveyors
The Institution of Civil Engineers (ICE)
The Chartered Association of Building Engineers (CABE)LENIO Party Wall Surveyors is led by chartered professionals with extensive experience advising homeowners, developers, and adjoining owners on Party Wall matters throughout London.
With a strong technical background in structural engineering, building construction, and Party Wall surveying, we provide clear, practical guidance to help clients navigate the requirements of the Party Wall etc. Act 1996 with confidence.
Your matter is handled by a LENIO chartered professional members of the Institution of Civil Engineers (ICE) and the Chartered Association of Building Engineers (CABE), specialising in Party Wall matters across London. With a technical background in structural engineering and building construction, we give clear, practical guidance under the Party Wall etc. Act 1996.
Meet the team →Whether you are planning a loft conversion, extension, basement project, or structural alterations, our team is here to provide expert guidance and a straightforward Party Wall service from start to finish.
Contact LENIO Party Wall Surveyors for professional advice and a no-obligation discussion about your project.
Call LENIO TodayWhatever stage you are at, there is a guide for it. Browse by where you are starting, the project you are planning, or the situation you are trying to resolve, and get a clear answer before you call.
New to the Party Wall Act? Start here for the essentials, from whether you need a notice to what the process involves and how long it takes.
Start With the Basics →Planning specific works? These guides cover what the Act means for extensions, loft conversions and basement excavations, step by step.
See Guides by Project →Worried about a dissent or damage? Understand your options when things get complicated, and the safeguards that protect both homes.
Resolve a Party Wall Issue →Short, practical reads on the questions London homeowners ask us most. From serving your first notice to handling a dissent, our latest posts help you understand the process before you begin.
Should both neighbours share one surveyor? The agreed surveyor route is ideal in some situations and wrong in others. This post explains when it works and when it does not.
Explore Insights →Most people treat the Schedule of Condition as a formality. In practice it is one of your strongest protections. This post explains exactly what it protects against, drawn from real London cases.
Explore Insights →The title “party wall surveyor” is not protected, so anyone can use it. This is our honest advice on how to choose a party wall surveyor in London you can trust.
Explore Insights →Most party wall problems come from simple, avoidable errors. This post lists the most common party wall mistakes London homeowners make, why each one hurts, and how to sidestep them.
Explore Insights →Every spring, surveyors see a surge of party wall notices. This post explains why spring is party wall season, when to serve a notice, and how to plan so paperwork never delays your build.
Explore Insights →London is a city of Victorian terraces, and those homes share their walls. This post explains why party walls in Victorian terraces matter, which works trigger the Act, and how both homes stay protected.
Explore Insights →The first conversation should help you understand your position, not pressure you into a service you may not need.
Whether you are planning building works, have received a Party Wall Notice, or simply need advice on your obligations under the Party Wall etc. Act 1996, our experienced Party Wall Surveyors are here to help. You do not need to have all the answers before contacting us. An initial discussion is often the best place to start.
Share your drawings, Party Wall Notice, planning information, or a brief description of the proposed works. Even if your plans are still being developed, we can advise on whether the Party Wall Act is likely to apply and what steps may be required.
We will explain how the Party Wall etc. Act 1996 applies to your specific project, whether Party Wall Notices are required, and the most appropriate next steps. Our advice is clear, practical, and obligation-free, giving you the confidence to move forward with your project.
Trusted by homeowners, developers and adjoining owners across London.
Useful official resources: the Party Wall etc. Act 1996 on legislation.gov.uk, the GOV.UK explanatory booklet, and the Faculty of Party Wall Surveyors.
Planning works, or received a notice? Get clear, practical, no-obligation advice from LENIO’s experienced Party Wall Surveyors. We cover the whole of London.
