Carport Costs UK — What to Charge to Build or Install a Carport in 2026

Quick Reference: Carport Prices UK 2026

These are supply-and-fit ranges for a standard installation on a property with reasonable access. Below we break down each type, the cost drivers, the planning rules, and a fully worked example so you can quote with confidence.

Carport Types and What to Charge

The structure type sets your material base cost and the labour profile of the job. Here are the four configurations you'll be quoting most often.

Timber Post-and-Beam Carport

The classic carpenter's build: pressure-treated softwood or oak posts on metal post anchors or concrete-set bases, with beams, rafters and a roof covering. Timber suits period properties and customers who want a warm, traditional look, and it's the structure most carpenters can build from materials off the merchant's shelf without ordering a proprietary kit.

Oak frames sit at the premium end — a single oak carport can run well past £4,000 in materials alone — while treated softwood keeps a single bay affordable. Expect £1,500–£4,000 supply and fit for a single timber bay, depending on timber grade and roof covering.

Aluminium / Metal Carport

Aluminium and steel carports are usually supplied as proprietary kits — powder-coated frames with polycarbonate or metal roof panels. They go up fast, need little maintenance, and appeal to customers who want a modern, low-fuss result. Margins on the kit itself are tight, so your money is made on the install and groundworks, not on marking up the frame.

Budget £2,000–£5,000 supply and fit for a single aluminium carport. Premium powder-coated systems with integrated guttering and LED lighting push toward the top of that range.

Lean-To vs Freestanding

A lean-to carport attaches to the house wall along one side, so it needs fewer posts and footings — the wall carries one edge of the roof via a fixed wall plate. A freestanding carport stands on its own posts on all sides, which means more footings, more timber or frame, and more labour digging and setting bases. Freestanding structures generally cost a little more to build for the same footprint, and they need careful drainage planning because there's no wall to tie into.

Watch the wall plate fixing on a lean-to: you're drilling and bolting into the customer's masonry and forming a weather seal against the wall. Flag any rendered or cavity-wall complications before you price.

Cantilever Carport

A cantilever carport is supported on posts down one side only, leaving the parking bay clear of posts on the other side — useful for tight driveways where a post would block a car door or wheelie bin. These are almost always aluminium proprietary kits because the cantilevered roof needs engineered footings and a heavier post structure. They cost more than a standard post-on-each-corner design and demand larger, deeper concrete bases to resist the overturning load. Don't underprice the groundworks on a cantilever.

Roof Options and Their Cost

The roof covering is one of the biggest price levers on a carport, and it's the spec customers change their mind about most. Quote each option as a clear line so the upgrade decision is theirs to make.

• Polycarbonate: Lightweight, lets daylight through, and the default on most kits. Cheapest covering, included in the base prices above. Multiwall (16–25mm) is far better than thin twinwall for noise and longevity.
• Corrugated / metal sheet: Box-profile steel or corrugated bitumen sheets. Cheap, quick and rugged, but noisier in rain and a more utilitarian look.
• Tiled to match the house: A pitched, battened and tiled roof that ties the carport visually into the property. The premium option — add £1,000–£3,000 over polycarbonate because of the extra timber, felt, battens, tiles and labour, plus the heavier structure needed to carry the load.
• Flat EPDM rubber: A single-ply rubber membrane on a flat or shallow-fall deck. Clean, modern, fully watertight, and a sensible choice on a lean-to where roof height is limited. Sits between metal sheet and tiled on cost.

What's Included in a Carport Build

Spell out the scope on your quote so there's no argument later about who supplies what. A full supply-and-fit carport job typically includes:

• Posts: Timber or aluminium uprights, with metal post anchors or concrete-set bases.
• Beams and rafters: The structural frame carrying the roof.
• Roof covering: Polycarbonate, metal sheet, EPDM or tiles, plus flashing where it meets the house.
• Foundations / post bases: Concrete footings dug and set, or bolt-down anchors on an existing slab.
• Fixings: Coach bolts, brackets, post anchors, wall plate fixings and weather seals.
• Guttering and downpipes: To carry roof water away to a drain or soakaway.
• Base / groundworks: A new concrete pad or block-paved area, if the customer doesn't already have a sound surface.
• Waste disposal: Spoil from footings, old structures and packaging removed from site.

Make explicit on the quote whether the base is included — it's the single most common source of disputes, because a customer assuming a fresh slab is part of the price will not be happy to learn it's £1,500 extra.

What Drives the Cost Up

Two carports of the same size can differ by thousands. The main cost drivers are:

• Size and number of bays: A double carport isn't simply twice a single — wider spans need bigger beams, but the extra cost per bay tapers, which is why doubles look better value per car.
• Attached vs freestanding: Freestanding needs more posts and footings and standalone drainage; a lean-to borrows the house wall.
• Roof type: Tiled adds £1,000–£3,000 over polycarbonate, both in materials and in the heavier structure required.
• Ground prep and drainage: Sloping or soft ground, the need for a new slab, and where surface water has to go all add cost. Building over an existing sound driveway is far cheaper than forming a new base.
• Integrated EV charger or lighting: Customers increasingly want an EV charge point and lighting under the carport. You'll need a qualified electrician for the charger and any fixed wiring — price it as a separate trade and add it as a line, don't absorb it.
• Access: Tight side access, a long barrow run for concrete, or no room for a mixer all slow the job and add labour.

Do You Need Planning Permission for a Carport?

In most cases a carport falls under permitted development and does not need a planning application — but the limits matter, and getting this wrong is the customer's problem and your reputation. A carport is usually permitted development provided it meets the conditions for an outbuilding or extension:

• Height: No more than 2.5m to the eaves if within 2m of a boundary; generally no more than 3m (or 4m for a dual-pitched roof) overall.
• Position: A carport forward of the principal elevation — in front of the house, facing the road — usually needs planning permission. Permitted development generally applies to structures to the side or rear.
• Area: Outbuildings and similar structures must not cover more than 50% of the land around the original house.
• Over 30m²: A structure with a floor area over 30m² can trigger the need for permission and brings building regulations into play.

Listed buildings, conservation areas and Article 4 zones strip away many permitted development rights — assume permission is needed there and advise the customer to check with the local planning authority. Building regulations can apply to larger or attached structures, and to any fixed electrical work (EV charger, lighting). When in doubt, tell the customer to confirm with their council before you start. Put it in writing on the quote that planning and building control sign-off is the customer's responsibility unless they've engaged you to handle it.

Worked Example: Single Timber Carport with Concrete Base

Let's price a typical job: a single freestanding treated-softwood carport, roughly 3m × 5.5m, with a polycarbonate roof, on a new concrete base, on a property with reasonable access. Here's how the numbers stack up.

That lands a single timber carport with a fresh base at the upper end of the supply-and-fit range — fair, because it includes groundworks. Strip out the base (customer has a sound driveway already) and you're back around £3,000–£3,200, squarely in the typical single-timber band. Adjust the day rate and margin to your area: £180–£300/day per tradesperson is the going range, with the higher end in London and the South East. Add VAT if you're registered, and make clear whether your quote is inclusive or exclusive.

How to Quote Profitably and Survey the Ground

Carport quotes go wrong on the ground, not the structure. The frame is predictable; the base, the drainage and the access are where margin disappears. Before you commit a price:

• Check the existing surface: Is there a sound slab to bolt down to, or do you need to form a new base? Probe for soft ground, made-up ground and buried services. A spongy or sloping plot can add a day of groundworks.
• Plan the drainage: Work out where roof water and surface water will go — a drain, a soakaway, or a permeable surface. Adding parking area over a certain size can require permeable paving or a soakaway under SuDS rules.
• Find the services: Don't set a footing on top of a gas, water or electric run. Locate them before you dig and note them on your survey.
• Measure access: Can a mixer or barrow reach the base? Is there room for the kit and the spoil? A long barrow run is real labour.
• Quote the base separately: List groundworks as its own line so the customer sees the cost and can't later claim they assumed it was free.
• Price the extras as lines: EV charger, lighting, tiled-roof upgrade and tree or fence removal each get their own line, never buried in the headline figure.
• Don't forget waste and consumables: Skip hire, fixings, sealants and post anchors add up — build them in, don't eat them.

A short site survey with photos and a clear, itemised quote wins more carport jobs than a low number on the back of a phone call. It shows the customer you've thought about their ground, their drainage and their planning position — and it protects your margin when the job turns out to be exactly what you priced.