Party Wall Survey for Loft Conversions in London
If you’re planning a loft conversion in London, it’s very likely your project falls under the Party Wall etc. Act 1996. Our Chartered Party Wall Surveyors help you serve valid notices, agree Party Wall Awards and keep your loft extension compliant, neighbourly and on schedule.
Why Loft Conversions Need a Party Wall Survey
Most loft extensions involve cutting into a shared wall, raising a party wall, or altering the roof structure that adjoins your neighbour’s property. Under the Party Wall etc. Act 1996 , many of these works are notifiable and require a formal Party Wall Notice and, in most cases, a Party Wall Award before you start.
At Hourican Associates, our Chartered Party Wall Surveyors in London help homeowners and developers comply with the Act, protect adjoining properties, and avoid delays or disputes. We handle every stage — from serving valid notices to preparing and agreeing Party Wall Awards — ensuring your loft conversion proceeds smoothly and legally.
When a Loft Conversion Triggers the Party Wall Act
You must usually serve notice before beginning loft conversion works that affect a shared wall or structure, including:
- Cutting into or raising a shared wall to insert steel beams
- Altering a party wall for a dormer extension or roof terrace
- Rebuilding or demolishing a chimney breast on a party wall
- Inserting flashing or structural supports into an adjoining wall
These activities are classed as party structure works under Section 2 of the Act and legally require a Party Wall Notice and, in most cases, a Party Wall Award. You can read more about this in our guide Do you need a Party Wall Agreement for a loft conversion? Failing to follow the correct process could delay your project or expose you to legal action.
How Our Loft Conversion Party Wall Service Works
Our surveyors make the process simple and stress-free, guiding you from early advice through to the agreed Party Wall Award.
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Initial Assessment
We review your architect’s drawings and proposals to confirm which sections of the Party Wall etc. Act 1996 apply to your loft conversion and which neighbours must be notified. -
Serving Party Wall Notices
We draft and serve the correct Party Wall Notices (usually Section 2 Party Structure Notices) on all affected adjoining owners, ensuring they are valid and legally compliant. -
Surveyor Appointment
If your neighbour dissents, each party can appoint their own surveyor, or both can agree to a single Agreed Surveyor . We act impartially under the Act, protecting both the building owner and adjoining owner’s interests. -
Schedule of Condition Survey
Before works begin, we carry out a detailed photographic and written Schedule of Condition Survey of the adjoining property to record its pre-works condition and reduce the risk of future disputes. -
Party Wall Award & Post-Work Review
We prepare and agree the Party Wall Award, setting out how the loft works will be carried out — including methods, working hours, access and damage procedures. Once your loft conversion is complete, we can revisit the adjoining property to confirm whether any damage has occurred and advise on necessary remedial works.
Typical Costs for Loft Conversion Party Wall Surveys
Our Party Wall Survey for Loft Conversions typically ranges from £1,100 – £1,500 + VAT, depending on the size of the property and number of adjoining owners involved. If your project only requires a Schedule of Condition Survey , fees usually range from £385 – £585 + VAT.
We offer clear, fixed-fee quotations before starting any work. You can also request an estimate via our online Party Wall surveyor quote form.
Why Choose Hourican Associates for Loft Conversion Party Wall Surveys
Hourican Associates is a specialist Chartered Building Consultancy focused on residential Party Wall matters across London. We combine technical expertise with a practical, neighbourly approach to help your loft conversion proceed smoothly and in full compliance with the Party Wall etc. Act 1996.
- Chartered Building Consultancy regulated by RICS, CIOB and MCABE
- Members of the Faculty of Party Wall Surveyors (FPWS) and the Pyramus & Thisbe Society
- Specialists in residential loft conversions across all London boroughs
- Fast, transparent and impartial service with legally compliant Notices and Awards
We’ve helped hundreds of London homeowners complete loft extensions safely, neighbourly, and fully in line with the Party Wall Act. For more general guidance, you can also visit our Party Wall FAQ section.
We cover Chelsea, Kensington, Fulham, Chiswick, Westminster and all areas across London.