St Austell · Cornwall
Wall tie replacement in St Austell
If a mortgage valuation on a St Austell property has flagged possible wall tie failure, the next step is a tie survey and a written quote. We explain what the borescope found on each elevation and price only the walls that need work.
Guide price from£1,850per house inc VAT

- Postcodes
- PL25
- Population
- about 24,000
- Area
- Cornwall
- Pricing region
- South West
What should you know about the ground under St Austell?
We cover St Austell and its postcode districts PL25, part of Cornwall, with a population of roughly 24,000. Neighbouring towns we cover: Bodmin (9 miles), Truro (13 miles) and Newquay (14 miles).
Most of Cornwall is on firmer ground than the clay belts of the south-east. Old metal-mine shafts and workings are recorded in places, so mining searches are routine for some properties. Housing stock in Cornwall: Granite and slate-stone cottages, cob buildings, Victorian terraces and post-war estates.
How much will wall tie replacement cost in St Austell?
These are guide prices for St Austell, using South West rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.
| Item | Guide price | Per |
|---|---|---|
| Mid-terrace houseest. | £1,850 – £3,600 | per house |
| Semi-detached house | £2,600 – £5,150 | per house |
| Detached houseest. | £3,600 – £7,200 | per house |
| Scaffolding where neededest. | £620 – £1,850 | per elevation |
Which repair method suits a home in St Austell?
Isolating the old ties
Where the old ties are swelling and cracking the brickwork, fitting new ties alone may not stop further damage. Each old tie can be isolated, usually by cutting it through within the cavity or sleeving its outer end, so it can no longer lift the outer leaf as it continues to corrode.
Best for: Thick mild steel ties still causing horizontal cracking
Partial rebuild of the outer leaf
If a section of the outer leaf has bulged too far to be tied back, it is carefully taken down and rebuilt with new ties built in as the work goes up. This is uncommon, and is usually limited to a gable top, a parapet or a panel under a window.
Best for: Outer leaf too distorted to tie back safely
What happens when we carry out wall tie replacement in St Austell?
Tie survey
A metal detector locates the existing ties and shows their pattern. Small holes are then drilled at sample points and a borescope passed into the cavity to see the tie condition, type and embedment. The holes are made good afterwards.
Report and quote
You receive a written summary of what the survey found on each elevation, which walls need new ties, whether old ties should be isolated or removed, and a no-obligation written quote with scaffold shown separately.
Access
Ties are fitted across the whole of each affected elevation, so scaffold or a tower is usually needed above ground floor. We plan access around conservatories, extensions, neighbours’ land and any parking that must be suspended.
Signs you may need wall tie replacement
- Outer brickwork bowing or bulging, often worst near the top
- Cracked render with a regular horizontal pattern
- A house built before the 1980s on an exposed or coastal site
Rules for wall tie replacement in England
Like-for-like repairs such as crack stitching and repointing do not usually need building control approval in England, but anything that changes or strengthens the structure, such as underpinning or rebuilding a wall, does. If the work touches a party wall, the Party Wall etc. Act 1996 may apply.
Wall tie replacement in St Austell: questions and answers
How much should I budget for wall tie replacement in St Austell?
Guide prices for wall tie replacement in St Austell start from about £1,850 per house, including VAT, on South West rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Can you survey a property in St Austell?
Yes. We take enquiries from across St Austell, including PL25, and from nearby places such as Bodmin and Truro. Send photos for a free initial view and we will tell you what happens next.
Why do houses in Cornwall crack?
Cornwall is mostly granite and slate with little shrinkable clay, so clay subsidence is less common than in the south-east. Historic tin and copper mining has left shafts and workings in places such as Camborne and Redruth, and mining searches are routine there. Only an investigation can say why a particular building has moved.
Do all walls of the house need new ties?
Not necessarily, because ties often fail on one exposed elevation long before the others. The survey checks each wall, and the quote covers only the elevations where ties have failed or are close to it. Sheltered walls may simply be noted for future checks.
Can wall ties be replaced on a rendered house?
Yes, new ties can be fitted through render, with each drill hole made good afterwards. The repairs can show on painted render, so redecoration of the affected elevation is often worth including. Render can also hide the cracking pattern, so a survey matters more.
Related work in St Austell
- Lintel replacement
- Structural surveys and crack monitoring
- Bowing wall repairs
- Subsidence repairs
- Brick arch repairs
Wall tie replacement near St Austell
If your St Austell home has a bulging outer wall, send photos from a few angles and we will help you decide what needs checking first.