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Greater London · CR5

Leak investigation and inspection in Coulsdon

Dealing with a leak nobody has managed to find in Coulsdon (CR5)? We find exactly where water is getting in, water-testing where needed, and put it in writing, with a fixed price agreed in writing first.

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We carry out leak investigation and inspection in Coulsdon and across the CR5 area. Some leaks are obvious; many aren't.

Surveyor on a step ladder inspecting the eaves of a roof lantern with a torch and moisture meter

Is it time for leak investigation and inspection?

  • Previous repairs haven't stopped the leak
  • You're not sure if it's a leak or condensation
  • You need a written report for a landlord, insurer or builder

Common causes we find

More than one fault

Older lanterns often have two or three small failures.

Not the lantern

Sometimes the source is the flat roof, a parapet, a gutter or a wall above.

Roof lanterns in Coulsdon

Sun and UV do more damage than rain on many lanterns here: brittle ridge caps, chalky finishes and hardened gaskets. They're cheap to replace before they let water in.

Across London, many lanterns sit on rear extensions with access only through the house, so we protect floors and plan the work to keep time indoors to a minimum. Parking and any permits are factored into the quote.

We cover Coulsdon as part of Greater London, about 12 miles from Westminster.

We also cover nearby Purley (2 miles), Banstead (3 miles), Wallington (3 miles).

What should you expect to pay in Coulsdon?

Guide price, per visit£145–£295 ex VAT£174–£354 inc VAT

Most leak investigation and inspection jobs come in between £145 and £295 ex VAT (£174–£354 including VAT), per visit. Towers or scaffold, where needed, are priced into the quote. Your fixed price is confirmed in writing before any work starts.

Do you need permission in England?

In England, like-for-like repairs to a roof lantern don't usually involve building control. A full replacement or a bigger opening is controlled under the Building Regulations 2010, so we set out the route in writing first. Listed buildings need listed building consent from the local council for alterations, and conservation areas can have extra controls; like-for-like repairs are treated differently from changes, so check with the council's conservation officer first.

How does it work?

  1. Send photosWhatsApp or upload a few photos and tell us when it leaks.
  2. Guide priceWe reply with a guide price and whether a visit is needed.
  3. Fixed price in writingYou approve the price and the date before anything starts.
  4. Repair and testWe fix what's failed, water-test where it matters, and send photos.

Leak investigation and inspection in Coulsdon: questions

Do you cover Coulsdon?

Yes. We cover Coulsdon, including the CR5 postcode area, as part of Greater London. Send photos by WhatsApp or the form for a free guide price, and we'll confirm the fixed price in writing before any work starts.

Which places near Coulsdon do you cover?

As well as Coulsdon, we cover nearby Purley, Banstead, Wallington, Sutton and the rest of Greater London.

Is the visit cost deducted from the repair?

Ask when you book — we'll confirm in writing how the visit is charged if you go ahead with the repair.

Do you provide a report?

Yes, with photos and findings, which is useful for landlords, insurers and disputes with installers.

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