Do I Need Planning Permission for a New Roof in 2026? (UK)
In 2026 UK, replacing your roof like-for-like is Permitted Development and needs no planning application. You only need permission if you change the roof shape, raise the ridge by more than 150 mm, install a roof terrace, switch materials in a conservation area, or your property sits under an Article 4 direction or Listed Building status.
Quick 2026 decision tree
- Same shape, same materials, same ridge height? — Permitted Development. No application.
- Conservation area — PD still applies for like-for-like but the material spec must match (no concrete tile on a slate street).
- Article 4 direction — PD rights are removed. Lodge a Householder application even for like-for-like.
- Listed Building (any grade) — Always Listed Building Consent, even for like-for-like.
- Change to roof shape (hip-to-gable, new dormer, raised ridge) — Householder Planning application required.
- Roof terrace or balcony added — Full planning required everywhere.
What counts as "like-for-like" in 2026?
The 2025 General Permitted Development Order tightened the definition. To count as like-for-like in 2026 you need:
- The same primary material (tile-to-tile or slate-to-slate; tile-to-slate is a material change)
- The same tile or slate profile and colour family in conservation areas (a darker grey can be accepted; a terracotta on a slate row will not)
- The ridge height within +/- 150mm of the original (insulation thickness counts; many warm-roof upgrades push above this)
- The same roof shape — no new gables, no hip-to-gable conversions, no new dormers
- The same eaves and verge detail (a continuous fascia is acceptable; a new overhang past 300mm is not)
The Article 4 trap
Article 4 directions are made by local authorities to remove Permitted Development rights in specific streets or districts. They are common in historic city centres (Bath, York, Edinburgh, central London) and increasingly in 1930s suburbs near conservation areas. An Article 4 direction means you must apply for planning permission even for a like-for-like roof replacement. Check your local planning portal’s Article 4 map before you commit to a roofer’s start date.
Conservation areas in 2026
In a conservation area, your Permitted Development rights are not removed, but they are restricted. Specifically: the roofing material must be visually consistent with surrounding properties, and modern interventions like solar PV in a prominent street-facing slope are routinely refused. Some boroughs (Camden, Westminster, Edinburgh, Bath & NES) operate "heritage panel" pre-application reviews that are worth using.
Solar PV on a roof replacement — 2026 rules
The 2026 Energy Performance regulations encourage solar integration during re-roofing, but planning rules have not relaxed in conservation areas. Outside conservation areas, in-roof solar PV under 200 mm of roof projection is PD. In a conservation area, street-facing slopes still require a Householder application even for in-roof systems.
Cost and timing of a planning application
- Householder Planning application: £548 fee + drawings (£800–£1,800) + 8 weeks decision
- Listed Building Consent: no fee + heritage statement (£1,200–£3,500) + 8 weeks decision
- Lawful Development Certificate (LDC): £274 fee + 8 weeks — recommended even for PD work to give buyer’s solicitors a clean answer at resale
Building Regulations still apply — even when planning does not
Planning permission and Building Regulations are two separate approvals. A re-roof rarely needs planning, but the moment you strip and re-cover more than 25% of a single roof slope the job becomes a renovation of a thermal element under Approved Document L, so the roof must be brought up to current insulation standards where practical — a target U-value of about 0.16 W/m²K for the finished roof build-up.
- Who signs it off: a CompetentRoofer or NFRC-registered roofer can self-certify under the Competent Person Scheme and issue your building-control completion certificate — with no separate council fee
- DIY or an unregistered trader: you must lodge a building notice with the council and pay a building-control charge before work starts
- Why it matters at resale: the completion certificate is exactly what a buyer’s solicitor asks for, and a missing one can trigger indemnity-insurance costs
For what a compliant re-roof costs by region, see our hip roof cost guide and the new roof cost per m² guide; to vet the installer first, read how to hire a roofer you can trust.
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