Do I Need Planning Permission for a Two-Storey Garage? (2026 UK)
Almost always yes. Permitted development rights for outbuildings (Class E of the GPDO) only cover single-storey buildings with a maximum height of 4m — so a genuine two-storey garage needs a full householder planning application. Add a habitable room or annexe above and building regulations bite harder too. Here's exactly what applies in 2026, what it costs and how long it takes.
Two-storey garage planning permission — quick answer
- Two-storey garage: yes — full householder planning application needed
- Why: permitted development (Class E) only allows single-storey outbuildings
- PD height caps: 4m dual-pitched roof, 3m otherwise, 2.5m near a boundary
- Application fee: from around £260–£530 in England — fees now rise each April, check your council
- Decision time: 8 weeks is the statutory target for householder applications
- Building regs: always required for a two-storey structure — more so with a room above
Design it as if it were a small house. Councils assess two-storey garages on height, massing and neighbour impact — matching materials, a modest ridge height and generous boundary distances are what get approvals through first time.
Garage scenarios: what needs permission in 2026
England rules shown; Wales and Scotland have similar but separate regimes — always confirm locally.
Why permitted development doesn't cover two storeys
Class E of the General Permitted Development Order allows outbuildings — including garages — without a planning application, but only if the building is single storey, with a maximum eaves height of 2.5m and a maximum overall height of 4m for a dual-pitched roof (3m otherwise, and just 2.5m within 2m of a boundary). Outbuildings also can't sit forward of the principal elevation or cover more than half the garden.
A two-storey garage fails the single-storey test by definition, so you apply for householder planning permission. The council's statutory decision target is 8 weeks. Expect scrutiny on ridge height versus the main house, overlooking of neighbouring gardens and windows, and materials — a design that reads as subordinate to the house approves far more easily.
Building regulations, rooms above and next steps
Any two-storey garage needs full building regulations approval — structure, fire safety and stairs at minimum. Put a habitable room, office or annexe above and you add insulation, escape windows, electrics and ventilation requirements; a self-contained annexe can also raise council tax and planning-condition questions, so describe the intended use honestly in your application.
If your garage plans are more modest, check whether you fit PD in our single-storey garage planning guide. Converting existing garage space instead? See planning for a garage conversion and the garage conversion cost guide — or get matched with vetted local builders via our free quote service.
Get Quotes for Your Two-Storey Garage
Our vetted builders design and build two-storey garages — and many handle the planning application and building regs package for you. Free quotes, no obligation.
Frequently asked questions
Related Guides
More guides to help you plan and budget.
Sources used in our 2026 figures
- legislation.gov.uk — GPDO 2015, Schedule 2, Part 1, Class E (outbuildings)
- Planning Portal — outbuildings & garage guidance
- gov.uk — planning application fee schedule
Methodology: Planning guidance reflects the England GPDO regime current at June 2026; Wales and Scotland differ in detail. Fees index annually each April — always confirm with your local planning authority. Last updated .