Hertfordshire · London and the South East
Pre-purchase roof survey in Welwyn Garden City, Hertfordshire
A roof survey before you buy a house or flat in Welwyn Garden City. We have completed more than 5,000 surveys across London and the South East.
- Flashings that have lifted or split
- Old water stains in the roof space
- Slipped or missing slates and tiles
Do you need a pre-purchase roof survey in Welwyn Garden City?
Asbestos was banned in UK construction in 1999. It is often found in cement sheets, soffits and flue pipes. We do not test for it or carry out asbestos surveys, but we flag materials that might so a specialist asbestos surveyor can check before anything is disturbed.
Common reasons to book include:
- Sagging ridge lines or uneven roof slopes
- Slipped or missing slates and tiles
- Gutters choked with leaves and moss
- Loose pots and cracked flaunching
The streets around a church such as Church Of Saint Francis Of Assisi are often among the oldest in a place, and if your home is one of the older ones nearby, a survey will show how the roof has been repaired before, which helps you judge what’s coming.
Before booking any roof surveyor
- What insurance they carry
- How soon the report will arrive
- What experience they bring
- What they won’t be able to tell you
Pre-purchase roof survey in Welwyn Garden City
Tall, steep or hidden roofs are hard to judge from the street. The Premium Survey adds thermal imaging, plus a drone inspection where applicable, along with a same-day report. Where a flight is not possible, because of airspace rules or the weather, we tell you and inspect from every other safe vantage point. We survey flat-roofed extensions and dormers, clay and concrete tiles and gutters and downpipes, and common reasons people get in touch are bitumen or mortar used in place of proper repairs and old water stains in the roof space.
Around towns like Welwyn Garden City, many houses have gained extensions, dormers, porches or garages, often with flat roofs. The joints where a new roof meets an old wall or slope are a common source of leaks. For a home you are buying in Welwyn Garden City, or a roof just finished there, those joints get a careful look.
If any part of the roof couldn’t be seen safely, we say so in the report. That way, it is clear what was covered and what wasn’t, and what we’d suggest next.
- Location
- Welwyn Garden City (AL7, AL8, AL6)
- Wider area
- Hertfordshire
- Prices
- From £150 inc. VAT
- Your report
- A written report with photos, by email
- Survey days
- Weekdays, Saturdays and Sundays
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Updated
- 27 October 2026
Different roofs, different checks
Flat roofs
Ponding, blistering, splits and worn upstands are the usual warning signs. Blocked outlets are checked as well, and we say what we see from wherever is safe.
Clay and concrete tiles
Older homes in the South East frequently have handmade clay tiles, including Kent peg tiles on some. Rotten pegs let tiles slide.
Common questions in Welwyn Garden City
Is Welwyn Garden City in the area you cover?
Yes, Welwyn Garden City is within the area we cover. We work right across London and the South East. You can ring 07833 053749 or email us with the address and some details.
What do I need to do before a survey in Welwyn Garden City?
Not much. Unlock side gates, keep pets in another room and dig out any invoices from past roof work.
Can you survey in bad weather?
It can, depending on the survey. Drone flights need calm, dry weather, and thermal imaging works best with a dry roof, little wind and a sunny day beforehand. We’ll rearrange with you if the weather isn’t right.
Will the roof report help me negotiate with the seller?
Yes. Buyers use the findings to ask questions, ask for repairs before completion or ask for a price change. What the seller agrees to is their decision, so we cannot promise any saving.
Do you go up on the roof?
Only where it is safe. We also inspect from ground level, upper windows and the loft space.
Are you insured?
Professional indemnity and public liability insurance cover our surveys. If you need details for a managing agent or a building owner, just ask.
Do you carry out surveys on Saturdays and Sundays?
We survey seven days a week: Monday to Friday, Saturdays and Sundays. Just tell us the days that suit you.
How the survey works
Where it’s relevant and can be reached safely, the loft space is checked as well as the outside. Inside, we look for staining, damp, gaps and signs of movement, as far as the space allows. All in, the survey typically takes between one and two hours for most houses, and more on a big or complicated roof. In Welwyn Garden City, parking is rarely complicated, though it helps to know about driveways or restrictions. We check the roof from the ground and from windows, then from the loft where there is safe access, and from the roof itself where it’s safe.
- You choose a Basic, Standard or Premium Survey to suit the home you are buying.
- A date is booked on a weekday, Saturday or Sunday.
- We inspect and photograph every part of the roof we can safely see.
- Standard and Premium surveys add the extra checks they include.
- You receive the report, with findings prioritised by urgency, so you can raise them with the seller.
Preparing for the visit
- Let us know about parking near the property
- If you’re buying, let the agent know when we’re coming
- For a flat or shared roof, check access with the building owner or managing agent
How to book
Booking is simple: just ring 07833 053749 or send us an email and give us a few details about the property and we’ll explain which survey suits. The price is agreed up front.
Related advice
Why act early in Welwyn Garden City
A mortgage valuation is not a roof survey. It looks at whether the property is suitable security for the loan, and it won’t look closely at the roof. Our survey is done for you. Once water reaches the loft insulation in a home in Welwyn Garden City, it loses much of its value and is slow to dry. That adds to the bill long before the leak is obvious.
There are three survey packages: Basic from £150, Standard from £250 and Premium from £400, all inc. VAT. What your roof costs depends on its size, access and what you want to find out.
Why book with us
- Packages from £150, inc. VAT
- 5,000+ surveys completed
- Customer satisfaction of 98%
- Two decades and more of roof surveys
Read what a roof survey costs or our case studies.
Pre-purchase roof surveys around Welwyn Garden City
The wider area around Welwyn Garden City has a long history of building, with Digswell House about 1.5 miles north. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs. Welwyn Garden City is one of England’s garden cities, planned in the early twentieth century. Its first houses are now over a hundred years old, with later estates and newer homes around them. Older roofs may still have their original coverings, with fixings and underlay that have done a long stint.
If you own a rental within reach of Welwyn Garden City station, a survey before purchase, or before signing off a new roof, saves surprises once a tenant moves in.
Welwyn Garden City is in Hertfordshire. We provide pre-purchase roof surveys for householders, landlords and businesses in Welwyn Garden City and nearby. Welwyn Garden City is one of the places in Hertfordshire where we work. You can also see our page for London.
Postcode districts we cover here for pre-purchase roof surveys: AL7, AL8 and AL6. Streets in the area include Church Road, Station Road and Lynmouth Road, all of which we cover. Welwyn Garden City sits on or near the B195 and A1000, so getting to you is simple. Other places close to Welwyn Garden City include Hatfield Hyde (1 mile south), Letty Green (3 miles south-east), West End (3 miles south), Essendon (3 miles south-east) and Staines Green (3 miles east). Within a short drive, we also cover Watford (13 miles south-west), Hemel Hempstead (12 miles west), Stevenage (8 miles north), St Albans (7 miles south-west), Harpenden (7 miles west) and Hitchin (11 miles north). Welwyn Garden City is one of the larger places we cover in Hertfordshire.
What’s near Welwyn Garden City
In Welwyn Garden City, that means homes and buildings near Stanborough Park, Sir Frederic Osborn School and The Bakehouse pub, among other places. Welwyn Garden City’s nearest station is Welwyn Garden City station, about 0.5 miles west of the centre. Well-known places in the area include The Bunker at Hatfield Police Station (2.9 miles south-west) and Queen Elizabeth II Hospital (1.1 miles south). The countryside around Welwyn Garden City includes Lemsford Springs.
Places near Welwyn Garden City
More services for Welwyn Garden City
Tips from our surveys
From years of surveys, a few habits stand out:
- Notice patches of new decoration in top-floor rooms
- Find out whether the roof has been replaced or patched
- For a flat, check who is responsible for the roof
- Ask whether there are papers for past roof work
We email the report to you, with photos of each finding. Turnaround is within 48 hours for Basic, 24 to 48 hours for Standard and the same day for Premium. Each defect is explained in plain words, with recommendations prioritised by urgency where relevant.
Chimneys and flashings need watching. Watch for gaps in the pointing, cracked flaunching and loose lead. Binoculars from the ground are enough for a first look.
Prices for pre-purchase roof surveys in Welwyn Garden City
Survey packages start from £150, with VAT included. The price for your roof depends on:
- Whether thermal imaging or a drone is needed
- Extra roofs, like extensions, dormers or garages
- Basic, Standard or Premium
- The roof’s overall size
To find out what your survey will cost, phone 07833 053749 or email us and let us know about the roof. The price is agreed before a date is set.
Booking your survey
Getting the details right at the start saves time. It helps to include:
- Your postcode, so we can check access and travel
- Why you want a survey: buying, a leak, a storm or new work
- Anything about access we should know
- Any photos you have, taken from ground level or a window
Prices start from £150, including VAT. The exact figure depends on the roof and the package, and you can call 07833 053749 or email us to find out.