Greater London · London and the South East
City of Westminster Roof Leak Investigation
An experienced roof surveyor for roof leak investigations in City of Westminster. More than 20 years and over 5,000 surveys.
- Ceiling stains that grow after rain
- Wet patches high on an inside wall
- Damp on a chimney breast
Roof leak investigations for City of Westminster homes and businesses
About our roof leak investigation in City of Westminster
Water is good at hiding where it gets in. It can run along a rafter, a batten or the underlay before it drips, so a ceiling stain is rarely directly below the cause. Our leak investigation traces it back, one likely route at a time. A repair aimed only at the stain can miss the cause entirely. Tracing the route first means any work can be aimed at the right place. We survey the roof space, lead flashings and slate and tile slopes, and people most often book us about water dripping from rafters or underlay and drips from nail tips in a cold loft.
London’s Victorian and Edwardian roofs have often been repaired many times, so a new leak can be the latest sign of wear rather than a single event. Telling wear from a one-off event matters, because insurers typically exclude wear and tear. That is as true in City of Westminster as anywhere in London. Photographs and a written account give you something specific to show an insurer, a landlord or a roofer.
What you get is a clear record of the leaking roof on the day we saw it. That makes it useful now and a handy reference later, like when you want to compare after future work.
- Place
- City of Westminster (W2, NW8, W9, SW1V)
- Region
- Greater London
- Cost
- From £150 inc. VAT
- Reports
- Emailed report with photos and recommendations
- Appointments
- Monday to Sunday, daytime
- Cover
- Professional indemnity and public liability
- Phone
- 07833 053749
- Last updated
- 27 October 2026
DIY checks: what’s safe
Inside, the loft is a good place to look, with care. Use a torch and stay on the joists or boards, and look for staining, damp timber or daylight coming through.
Look up at the roof after a storm, from ground level: broken slates or tiles in the garden, gaps along the ridge or loose lead are signs to note. Do not go up yourself.
Towns and villages near City of Westminster
More services for City of Westminster
Roof leak investigations around City of Westminster
Welsh slate on Victorian and Edwardian terraces is a familiar sight across inner London. A butterfly roof with a central valley gutter, tucked behind a parapet wall, is common on these houses. Lead flashings, party-wall upstands and shared chimney stacks are typical of these houses, if yours is one of them. Knowing the roof type helps narrow down where water may be getting in. About 0.3 miles east lies Handel Hendrix House, a reminder of how long the area around City of Westminster has been built on. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs, and any change of roofing material on a listed home needs checking with the council first.
If you live in an older home near St Mark's, the leak may come from a chimney, a valley or tired lead rather than the covering itself. Homes near green spaces such as Hyde Park can get more leaves in their gutters in autumn.
City of Westminster is about 3 miles west of London, in Greater London. We survey roofs in City of Westminster and the surrounding area across London and South East England. Our Greater London coverage includes City of Westminster.
Postcode districts we cover here for roof leak investigations: W2, NW8, W9 and SW1V. Streets in the area include Portman Square, Grosvenor Square and Cavendish Square, and we cover them all. Main roads around City of Westminster include the A4 and A5. We also cover Marylebone (1 mile north-east), Mayfair (1 mile south-east), Tyburn (1 mile west), Burlington Estate (1 mile south-east) and Connaught Village (1 mile west). Larger places within reach include London (3 miles south-east), Shoreditch (3 miles east), Walthamstow (7 miles north-east), Hoxton (3 miles north-east), Whitechapel (4 miles east) and Hampstead (3 miles north-west). Being one of Greater London’s larger places, City of Westminster has every kind of building, from houses and flats to offices.
What’s near City of Westminster
We work in homes and buildings around LITE Regal International School, Royal Society of Medicine Library and Devonshire Arms, among other places. Other local landmarks include The St Marylebone CofE School (0.5 miles north) and Hyde Park (0.6 miles south-west). City of Westminster has its own railway station: Bond Street station. Other landmarks nearby include Dunhill Museum & Archive (less than half a mile north) and Kingly Court (0.6 miles east). Green spaces nearby include Serpentine and Primrose Hill.
City of Westminster: your questions answered
Is City of Westminster in the area you cover?
We do. Every survey there gets the same written report with photos.
Is my home in City of Westminster listed or in a conservation area?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. Listed building consent is needed for changes that affect a listed building’s special interest, and conservation areas can limit changes of roofing material.
Will you fly a drone over my roof?
Yes, where it is applicable. Whether we can fly on the day depends on the weather and the airspace rules. We hold a CAA Flyer ID and Operator ID.
Does someone need to be in?
Someone needs to let us in if we’re looking inside or in the loft. Access is agreed with you when you book.
Will you walk on the roof?
Not always. Some roofs are too steep or fragile to walk on safely. We use safe viewpoints, the roof space and a drone where it applies, and the report records anything we couldn’t see.
Is there anything I need to do ahead of the visit?
Clear the loft hatch so we can get into the loft space. Gather any photos and notes about when it leaks, and let us know about past repairs. Keep catching drips and keep water away from electrics.
What happens next?
The report arrives by email, with photographs and clear recommendations. The Standard Survey includes a follow-up consultation, and the Premium Survey an in-person consultation.
How we price roof leak investigations
A few things affect what a survey costs:
- The use of thermal imaging or a drone
- How complicated the roof is, with its valleys, chimneys and parapets
- The type of building, from a house to a block or an office
- How big the roof is
Roof leak investigation starts from £150, including VAT. The final price depends on the size and height of the roof, how it can safely be seen and which survey you book.
What we need to know
What helps most when you contact us:
- The kind of building and roof involved
- The address and postcode of the property
- Any stains, drips or damp patches you’ve seen indoors
- Any deadline, like an exchange date
Buyers should book once an offer has been accepted, so there’s time to use the report before exchange. For any other survey, just phone 07833 053749 or email us when you are ready.
How the survey works
Every roof is different; as a rough guide, the survey takes an hour or two for most houses, with bigger or more complicated roofs taking longer. If you have questions on the day, just ask. In City of Westminster, as in much of London, a good many properties are flats or terraces without side access, so rear slopes are viewed from windows, the loft or, where a flight is allowed, by drone. If the building has a managing agent or access rules, let us know as you book.
- We help you choose the package that suits the leak.
- A visit is booked for a weekday, Saturday or Sunday.
- The investigation works from the stain back to the roof.
- Moisture detection and thermal imaging are used where your package includes them and they help.
- The report explains the likely entry point and what needs attention.
Before we arrive
- For flats, check roof access has been agreed
- Have keys ready for side gates, garages or roof access doors
- Jot down any questions you want answered
Arrange a survey
To get a price for roof leak investigations in City of Westminster, phone 07833 053749 or send us an email. A few details about the property and the roof help us give you an accurate price.
Advice
Landlord and commercial surveys in City of Westminster
Letting agents often book on a landlord’s behalf, and the report can go to both. Access is agreed with the tenant in advance.
Roof problems in a rented home affect tenants as well as the building. A survey shows what needs attention, so you can plan the work with less disruption.
When to book a survey in City of Westminster
Some water in the loft isn’t rain at all. Warm, moist air from the house rises into a cold roof space and condenses, particularly in lofts with blocked eaves. Wet nail tips and damp underlay over a wide area are classic signs.
We’re often asked to look at:
- Water through the ceiling under a flat roof
- Damp on a chimney breast
- Wet patches high on an inside wall
- Stains around a skylight
Landlords with a home close to Bond Street station may find that a tenant living with a leak needs the cause found, not just the stain painted over.
Before you book any roof surveyor
- Whether any drone flown is registered with the CAA
- Whether the inside of the roof is included
- Their report turnaround times
- How they’ll see the roof: from the ground, the loft, the roof or by drone
What this survey can’t tell you
To be straight with you, a roof survey has limits:
- Faults hidden behind ceilings or boarding
- A structural engineer’s report
- Leaks from plumbing, tanks or pipework rather than the roof
If in doubt, ring 07833 053749 or drop us an email and we’ll suggest the right survey before you book. What our survey covers.
Roof types and parts we check
- Lead flashings
- Chimney stacks
- Valleys and parapet gutters
- Rooflights and dormers
- Flat roof details
- The roof space
- Slate and tile slopes