Hillingdon at a glance
- Postcode districts
- UB8, UB10, UB11, UB7, UB4, HA4
- Council area
- London Borough of Hillingdon
- Building approval
- London Borough of Hillingdon building control, or a registered building control approver
- Guide price region
- London (+20% on West Midlands rates)
What do block and HMO roofs in Hillingdon need?
A block roof in Hillingdon is a long-term asset, so we talk about whole-life cost as well as the price today. A longer-life system with corrected falls can mean fewer reactive repairs and fewer rounds of consultation over the years, and the survey explains the options in plain terms.
In a town like Hillingdon, flat roofs are commonly found on mansard and dormer loft conversions or mansion blocks and purpose-built flats with large flat roofs. The Thames basin is one of the drier parts of Britain at roughly 730 mm of rain a year, but summer heat is the bigger test here: dark membranes on south-facing roofs swing a long way in temperature.
How much does a block or HMO roof cost in Hillingdon?
For Hillingdon we use London rates: £18,650–£32,650 is the guide for a 150 m² block-of-flats roof in felt with insulation and scaffold, VAT included. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Block of flats (150 m²), felt + insulation + scaffold | £18,650–£32,650 |
| Commercial roof (100 m²), single-ply + insulation | £15,900–£26,150 |
How does Section 20 consultation affect roof works?
In England and Wales, if leaseholders pay for roof works through the service charge and any one leaseholder's share will be over the statutory threshold, the freeholder or managing agent must consult them under Section 20 of the Landlord and Tenant Act 1985 before the work is contracted.
The consultation is run by the freeholder or agent, not by us. It usually involves a notice of intention and then estimates shared with leaseholders, each stage with time for comments, and missing a step can limit what can be recovered through the service charge. Take advice from your agent or a specialist adviser if you are unsure; we don't give legal advice.
What we provide is an itemised written quote that is easy to share and compare: system and build-up, roof area, scaffold and access, insulation, outlets, upstands and trims, waste disposal, provisional sums for hidden defects such as deck repairs, and VAT shown clearly. We can price more than one system on the same scope, so leaseholders are comparing like with like.
What's included?
- Free survey and fixed, itemised written quote
- Long-life systems: mastic asphalt, EPDM, single-ply and built-up felt
- Building control and insulation upgrades handled where needed
- Quotes laid out to support leaseholder consultation
Building regulations in England
Replacing more than half of a flat roof over a heated room usually counts as renovating a thermal element, so the roof is insulated to around 0.16 W/m²K where that's technically and economically feasible, and the work is notified to building control: the council or a registered building control approver, unless a registered competent person self-certifies it. A roof on a new extension is built to 0.15 W/m²K. Patch repairs, and most unheated detached garages, don't trigger the upgrade. Structural changes, or a new covering that adds 15% or more to the roof's weight, also need approval. More on the rules.
Which nearby areas do we also cover?
Flats, HMOs and block roofs in Hillingdon: questions
Do you cover Hillingdon?
Yes. Hillingdon is part of our London coverage, including postcode districts UB8, UB10, UB11, UB7, UB4, HA4. Surveys and roofs are carried out by vetted roofing teams working under S&K Property Investments and Improvement Ltd.
Who checks building regulations for a flat roof in Hillingdon?
Where the work needs approval it goes to London Borough of Hillingdon building control, or a registered building control approver. We tell you at the survey whether your job needs it and deal with the paperwork as part of the quote.
How much does a block or HMO roof cost in Hillingdon?
£18,650–£32,650 for a 150 m² block-of-flats roof in felt with insulation and scaffold, at London guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Does a block roof replacement need building control?
Usually, yes. Re-covering more than half of a roof over heated flats normally triggers the thermal element rules, which bring insulation and approval requirements, and we handle building control or building standards where it is needed.
Do you work for HMO landlords?
Yes. We replace and repair flat roofs on HMOs and converted flats, arrange access with tenants through the landlord or agent, and keep escape routes and entrances clear while we work.