Lewes at a glance
- Postcode districts
- BN7
- Population
- about 17,297 (GeoNames)
- Council area
- Lewes District Council
- Building approval
- Lewes District Council building control, or a registered building control approver
- Nearest main town
- Brighton, about 7 miles
- Guide price region
- South East (+10% on West Midlands rates)
What do block and HMO roofs in Lewes need?
Leaseholders in Lewes want to see where their money goes. Our itemised quotes show each element of the job separately, including scaffold, insulation and provisional sums for hidden defects, which makes them easier to share and compare when the freeholder or agent is consulting on the work.
In and around Lewes, flat roofs are typically found on terraced streets with flat-roofed rear kitchens and bathrooms, and on newer estates where the first extension roofs are now being replaced. Much of the South East sits in the drier Thames catchment at roughly 730 mm of rain a year, so the usual failures are at joints, upstands and outlets rather than from sheer volume of rain.
How much does a block or HMO roof cost in Lewes?
At South East guide rates, a 150 m² block-of-flats roof in felt with insulation and scaffold comes to £17,100–£29,900 including VAT. 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 | £17,100–£29,900 |
| Commercial roof (100 m²), single-ply + insulation | £14,550–£23,950 |
Which roofing systems last longest on a block of flats?
Mastic asphalt, EPDM, single-ply and high-performance built-up felt all give long service lives on block roofs; the right choice depends on the deck, how the roof is used, the details and the whole-life cost.
- Mastic asphalt: 30–60 years with maintenance, common on concrete-decked blocks and walkways. See mastic asphalt roofing.
- EPDM: 25–50 years, laid in large sheets with few joins.
- Single-ply: 25–35+ years, quick to lay on larger roofs, with welded laps. See single-ply roofing.
- Built-up felt: 15–25 years for modern torch-on systems and longer for high-performance systems, robust where maintenance teams walk the roof.
- Liquid-applied: 10–25+ years by product, useful as an overlay on a sound roof with complex details.
The cheapest roof today is not always the cheapest over the life of the building. A longer-life system, with tapered insulation to cure ponding, can mean fewer reactive repairs and fewer rounds of consultation. These lives are indicative and assume good specification and regular maintenance.
What's included?
- Building control and insulation upgrades handled where needed
- Long-life systems: mastic asphalt, EPDM, single-ply and built-up felt
- Written workmanship guarantee, with manufacturer guarantees registered where the system allows
- 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 Lewes: questions
Do you cover Lewes?
Yes. Lewes is part of our East Sussex coverage, including postcode districts BN7. 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 Lewes?
Where the work needs approval it goes to Lewes District Council 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 Lewes?
£17,100–£29,900 for a 150 m² block-of-flats roof in felt with insulation and scaffold, at South East 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.
Do residents need to move out during a re-roof?
No. Block roofs are normally replaced with residents in place, and if we need to check a ceiling inside a top-floor flat, access is arranged through the agent or landlord.