Greater London · England
Structural repairs in Harrow
Structural repairs in Harrow: subsidence, cracks, underpinning, wall ties and lintels, with a free initial assessment from your photos.
- Postcodes
- HA1, HA2, HA3, HA5, HA6, HA7
- Population
- about 260,000
- Area
- Greater London
- Pricing region
- London
Where do we cover around Harrow?
We cover the whole of Harrow, including postcode districts HA1, HA2, HA3, HA5, HA6, HA7; about 260,000 people live in the borough. Neighbouring towns we cover: Brent (3 miles), Ealing (5 miles), Borehamwood (5 miles) and Watford (5 miles).
Is Greater London prone to ground movement?
Shrinkable clay is widespread in Greater London. Ground movement here is more often linked to soils, drains and trees than to mining. What you mostly find across Greater London: Victorian and Edwardian terraces with shallow footings, inter-war semis in the outer boroughs, and converted flats and mansion blocks.
What we check first in Harrow
In Harrow, cracking usually comes back to one of these. We rule each in or out before recommending a repair.
- Shrinkable clay drying out in hot summers, worst within reach of tree roots
- Shallow footings and corroded wall ties in older brick houses
- Rotten timber lintels and bressummers over bays and openings
- Leaking or broken drains washing fine soil out from under footings
Repairs we carry out in Harrow
- Retaining wall repairs
- Crack stitching
- Floor joist repairs
- Structural crack repairs
- Subsidence insurance claim repairs
- Brick arch repairs
- Wall tie replacement
- Extension pulling away repairs
- Chimney stack repairs
- Underpinning
- Subsidence repairs
- Bay window subsidence repairs
- Resin injection ground stabilisation
- Bowing wall repairs
- Roof structure repairs
- Gable end wall repairs
- Lintel replacement
- Structural surveys and crack monitoring
- Boundary and garden wall repairs
- Concrete repairs
Guide prices in Harrow
Guide prices below are for homes in Harrow, on London rates and including VAT. A survey or good photos let us turn them into a fixed written price.
| Item | Guide price | Per |
|---|---|---|
| Crack stitching: crack stitching with stainless helical bars | £100 – £225 | per metre of crack |
| Underpinning: mass-concrete underpinning | £1,250 – £1,900 | per metre of wall |
| Resin injection ground stabilisation: resin injection ground stabilisation | £1,000 – £1,900 | per metre of wall treated |
| Structural surveys and crack monitoring: structural engineer's inspection and report | £625 – £2,500 | per property |
Do repairs in Harrow need approval?
Stitching and like-for-like repairs rarely need approval in England. Underpinning and other strengthening work goes through building control, and work near a neighbour’s foundations can need a party wall notice.
Towns near Harrow
Structural repairs in Harrow: questions
Do you cover Harrow?
Yes. We take enquiries from across Harrow, including HA1, HA2, HA3, HA5, and from nearby places such as Brent and Ealing. Send photos for a free initial view and we will tell you what happens next.
Why do houses in Harrow crack?
Common causes around Harrow include bay windows built on shallower footings than the main walls, rotten timber lintels and bressummers over bays and openings, and garden and boundary walls leaning as tree roots and frost get to them. The cause is checked before any repair is recommended.
How much do structural repairs cost in Harrow?
It depends on the repair. On London rates, crack stitching from about £100 per metre of crack and mass-concrete underpinning from about £1,250 per metre of wall, including VAT. Your written price follows photos or a survey.
If you are in Harrow, the quickest start is a few photos and a short description. We reply with what we think is going on and what it should cost.