Greater London · London and the South East
Thermal Roof Survey in St James's
We carry out thermal roof surveys in St James's and the rest of Greater London. We survey on weekdays, Saturdays and Sundays.
- Ceilings that feel colder in places
- Stains that keep coming back
- Moisture around outlets and upstands
For landlords and managing agents
Any of our surveys can be booked by landlords, agents and building managers in St James's. For a price for a let property or a block, call 07833 053749 or use the contact form.
For blocks of flats, a roof survey helps managing agents and residents’ management companies plan ahead. The report sets out what needs attention now and what can wait.
About our thermal roof survey in St James's
On a flat roof, wet insulation holds heat longer than dry insulation. So a wet patch can show as a warmer or cooler area on the camera. This can give an idea of how far water has travelled beneath the membrane, something you can’t usually tell from the surface. Moisture readings are then used to check what the camera suggests. If you’ve noticed damp where roofs meet walls and chimneys and leaks that are hard to trace, we can find out what’s behind it.
London airspace is busy and tightly controlled: there are flight restriction zones around Heathrow, London City and London Heliport, and restricted areas over Hyde Park, the City of London and the Isle of Dogs. Every address in St James's is checked before any drone flight, and where permission is needed, the flight waits for it.
Where we can’t see part of the roof, the report says so. You’ll know exactly what was inspected and what wasn’t.
- Place
- St James's (W1F, W1D, W1J)
- Region
- Greater London
- Prices
- From £400 inc. VAT
- Reports
- Emailed report with photos and recommendations
- Appointments
- Weekdays, Saturdays and Sundays
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Updated
- 27 October 2026
Thermal roof surveys around St James's
Close to the centre of London, a great many houses are Victorian or Edwardian terraces, many of them roofed in Welsh slate. Behind many of their parapets sit butterfly roofs and valley gutters that can’t be seen from the pavement. In a house like that, shared stacks, party-wall upstands and lead flashings all need looking at as far as they can be seen. A drone or thermal camera adds most on the steep, tall and hidden parts of roofs like these. Marlborough House, about 0.3 miles south-west, is one of the historic houses in the wider area around St James's. If yours is one of the older homes, expect a mix of original materials and later repairs on the roof, and the council can say whether a home is in a conservation area.
If you look after a building like Soho Parish CofE Primary School, a drone or thermal camera can show a large roof in a single visit. Hotels and guest houses near St James's can’t easily close rooms for a leak, so it’s worth knowing the roof’s condition. Controlled parking zones are common in London, so mention any permit rules for St James's, along with any off-street space.
St James's is about 1 mile south-east of City of Westminster, in Greater London. Bookings from St James's are handled just like any other: get in touch, agree the price and pick a day. Our area takes in places right across Greater London, from the larger towns to small villages.
Postcode districts we cover here for thermal roof surveys: W1F, W1D and W1J. That includes homes and businesses on Duck Lane, Bruton Lane and Bridle Lane and the roads around them. St James's sits on or near the A4 and A400. Nearby, we also carry out thermal roof surveys in Chinatown (1 mile north), Charing Cross (1 mile east), Soho (1 mile north), West End (1 mile north-east) and Burlington Estate (1 mile west). We also work in nearby towns like Kensington (3 miles west), Shoreditch (3 miles north-east), Walthamstow (7 miles north-east), Hoxton (3 miles north-east), Whitechapel (3 miles east) and Hampstead (4 miles north-west).
Near you in St James's
In St James's, that means homes and buildings near LITE Regal International School, Tom Cribb pub and London Library, among other places. You will also find Harris Westminster Sixth Form (0.6 miles south) and St Anne's Churchyard (under half a mile north). St James's has its own railway station: London Charing Cross station. Other landmarks nearby include The Museum of Practical Geology (within half a mile north-west) and Montfichet's Tower (1.4 miles east). Green spaces nearby include St. James's Park Lake and Ludgate Hill.
How we price thermal roof surveys
Survey packages start from £150, with VAT included. What you pay for your roof depends on:
- Building height and the viewpoints available
- Basic, Standard or Premium
- House, block, shop or office
- The size of the roof
There are three survey packages: the Basic Survey from £150, the Standard Survey from £250 and the Premium Survey from £400, all inc. VAT. What your roof costs depends on its size, access and what you want to find out.
What we need to know
You don’t need to know any roofing terms. It’s enough to let us know:
- The kind of building and roof involved
- Any stains, drips or damp patches you’ve seen indoors
- The property’s address and postcode
- Pictures of the roof from a safe spot, if you have them
To book a survey, call 07833 053749 or use the contact form and tell us the address and what’s prompted the survey. You’ll know the price before anything is booked.
What we cannot see
We only report whatever is safely visible on the day, so some things are outside what a survey can do:
- Readings unaffected by sun, shade or reflections
- A structural engineer’s assessment
- An energy rating for the building
If in doubt, ring 07833 053749 or use the contact form and we’ll recommend the right survey before booking. What a survey covers and does not.
Roof types and parts we check
- Insulated roof spaces
- Flat roofs
- Loft conversions
- Pitched roof slopes
- Commercial roofs
- Ceilings below the roof
FAQs for St James's
Can you fly a drone over a roof in St James's?
The answer turns on the exact location and the conditions on the day. The flight restriction zone around London Heliport in Battersea comes within about 2 miles of St James's. The exact boundary is checked for each address before any flight, and a roof inside it needs permission before we fly. St James's is about 2 miles from the restricted area over Hyde Park, where drone flights need permission from NATS. If a roof falls inside it, we apply for permission before flying, and the flight only goes ahead if it is granted. London’s airspace includes flight restriction zones around Heathrow, London City Airport and London Heliport, and restricted areas over Hyde Park, the City of London and the Isle of Dogs. Every London address is checked against them before a flight. A small drone can’t fly safely in strong wind or a downpour, and the rest of the survey doesn’t depend on the drone.
How do I find out if my home in St James's is listed?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. If a home is listed, changes that affect its special interest need listed building consent, and in a conservation area re-roofing in different materials may need permission.
Does thermal imaging work on slate and tile roofs?
It can show heat loss and some damp, but it has more limits there. We explain what the images can and cannot tell you, and back them up with a visual inspection and moisture readings.
Is it the same as a RICS Level 2 or Level 3 survey?
No. Our survey is a roof survey, not a RICS Level 2 or Level 3 survey of the whole building. It focuses on the roof, so it sits alongside a building survey rather than replacing it.
Is it a structural engineer’s report?
No. Visible signs like deflection or sagging are recorded, but we do not provide calculations or an engineer’s opinion. The report will say if you need an engineer.
Will thermal imaging find my leak?
It’s a useful tool for tracing leaks, but not the only one. The results depend on conditions on the day. If the source cannot be confirmed, we will say what could help next, such as electronic leak detection.
Which survey includes thermal imaging?
Thermal imaging is included in our Premium Survey, from £400. The Premium Survey also covers a full inspection, drone inspection where applicable, structural analysis and a report on the same day.
Why get it checked now?
Thermal images can suggest the extent of wet areas without cutting into the roof. It helps when deciding whether to patch an area or replace the roof. In St James's, as across London, an overflowing gutter soaks the wall below. A blocked outlet ignored for a winter or two can mean damp walls inside.
Price depends partly on the package: Basic from £150, Standard from £250 or Premium from £400, all including VAT. The roof’s size, height and access matter as well.
What you get with us
- Every finding written up with photos
- Clear package prices, including VAT
- Professional indemnity and public liability insurance
- 98% customer satisfaction
Read how roof surveys are priced and our case studies.
What we look for on each type of roof
Pitched slate and tile roofs
Thermal images of a pitched roof can still show heat loss patterns and some damp areas. The report explains what the images can tell you and what they cannot.
Parapets, valleys and junctions
When valley or parapet gutters overflow, water can get into walls and ceilings. Thermal images, checked with moisture readings, can help trace it.
Towns and villages near St James's
What else we do in St James's
What we do, step by step
After the inspection, everything we found is written up as a photo-illustrated written report. As for time on site, most surveys take about one to two hours for most homes, plus time to check any thermal findings with moisture readings. Surveys in St James's can be booked for any day of the week. London parking is often by permit or pay-and-display, so it is useful to know what’s near you, and to clear a path to the loft hatch. A back bedroom window can be the best vantage point for a rear addition, so we may ask to use one.
- First we discuss the roof, any damp and the forecast for the visit.
- The roof is inspected visually from safe positions.
- We take thermal images of the roof and of the loft where we can reach it.
- Patterns that stand out are checked with moisture readings.
- Each image is set beside a normal photo and explained in the report.
Before we arrive
- Buyers: confirm access with the estate agent or seller
- Tell us where we can park nearby
- Make a note of anything you’d like us to look at
Booking a survey
Buyers should book once an offer has been accepted, so there’s time to use the report before exchange. Otherwise, simply phone 07833 053749 or email us whenever suits you.