Greenwich at a glance
- Postcode districts
- SE18, SE7, SE28, SE2, SE3, SE9
- Council area
- Royal Borough of Greenwich
- Building approval
- Royal Borough of Greenwich building control, or a registered building control approver
- Guide price region
- London (+20% on West Midlands rates)
What do block and HMO roofs in Greenwich need?
A block roof in Greenwich 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 Greenwich, flat roofs are commonly found on mansard and dormer loft conversions or Victorian and Edwardian terraces with flat-roofed back additions. 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 Greenwich?
Guide price in Greenwich: £18,650–£32,650 for a 150 m² block-of-flats roof in felt with insulation and scaffold, including VAT at London rates. 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 do you manage access and residents during the work?
We agree an access and communication plan with the agent or freeholder before the scaffold goes up, so residents know what is happening and when.
That usually covers notices in the common parts and letters to each flat, scaffold and skip positions, keeping entrances, escape routes and bin stores clear, working hours, securing the scaffold out of hours, and a named contact for questions. If we need to look at a ceiling inside a top-floor flat, we arrange access through the agent or landlord.
Occupied blocks are re-roofed in phases, with each section watertight before the team leaves site, which also lets a larger roof be spread over more than one service charge year. Hot works near windows, vents and escape routes are tightly controlled, or avoided altogether with cold-applied systems.
What's included?
- Building control and insulation upgrades handled where needed
- Resident notices, access planning and phased work
- Long-life systems: mastic asphalt, EPDM, single-ply and built-up felt
- Free survey and fixed, itemised written quote
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?
- Newham · 3 mi
- Bexley · 4 mi
- Tower Hamlets · 5 mi
- Lewisham · 5 mi
- Barking and Dagenham · 5 mi
- Redbridge · 5 mi
Flats, HMOs and block roofs in Greenwich: questions
Do you cover Greenwich?
Yes. Greenwich is part of our London coverage, including postcode districts SE18, SE7, SE28, SE2, SE3, SE9. 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 Greenwich?
Where the work needs approval it goes to Royal Borough of Greenwich 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 Greenwich?
£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.
Do you run the Section 20 consultation?
No. The freeholder or managing agent runs the consultation; we provide itemised written quotes that can be shared with leaseholders and answer technical questions passed on through the agent.
Can a block roof be replaced in phases?
Yes. Larger roofs can be split into sections over one or more budget years, with each phase priced separately and each section left watertight before the team leaves site.