Party wall surveyors in Portsmouth
Portsmouth's dense Victorian terraces make party wall notices a fixture of extensions and loft conversions across the city. Compare free quotes from verified surveyors covering PO postcodes.
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Party wall surveyors in Portsmouth: the local picture
- Postcodes covered
- PO
- Local authority
- Portsmouth City Council
- Housing stock
- a mix of Victorian and Edwardian terraces and interwar semis
- Typical price band
- £250,000 to £500,000
Typical party wall cost in Portsmouth
£735 - £1,260 (one agreed surveyor) to £1,470 - £2,520 (surveyor each side)
Our party wall calculator for a rear extension with one adjoining owner, from published 2026 award fee ranges.

Why use a local party wall surveyor in Portsmouth?
Conservation areas in Old Portsmouth and Southsea - so alongside the Party Wall Act, planning and conservation constraints shape many Portsmouth projects. A surveyor who works these streets knows the local pattern of notices, awards and neighbour relations.
Every party wall surveyor we match you with covers PO postcodes, carries professional indemnity insurance and is verified before receiving your enquiry. Whether you're serving notice or have received one, you choose how many quotes to compare - up to 6.
Before you hire: our guides
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Party wall surveyors in Portsmouth: your questions
How much does a party wall surveyor cost in Portsmouth?
For a typical extension with one adjoining owner, £735 - £1,260 with a single agreed surveyor, or £1,470 - £2,520 if each side appoints their own. Lofts are usually slightly less and basements more.
Which areas of Portsmouth do party wall surveyors cover?
Verified surveyors on Homeply cover PO postcodes; several also serve southampton, brighton.
Do I need a party wall surveyor for a loft conversion in Portsmouth?
If the work affects a shared wall - steel beams bearing into it, raising it, cutting into it - the Act applies and notice is needed. In Portsmouth's terraces that is most lofts. A surveyor will confirm in minutes.
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