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A Carport Designed as a Pavilion, Not a Shed

Car shelter built as an open frame with no doors and no walls, roofed in something planted or louvred, suited to owners who want the parking area to belong to the garden rather than to be screened from it.

Spaces:front gardendrivewayside accesscourtyard frontagerural approach
Style:contemporaryarchitecturalnaturalisticminimal

Where this idea works

Where this idea works

Contexts this direction tends to suit — and, honestly, where it may not.

  • Frontages where a closed garage would dominate the elevation or block a view through
  • Owners who want shelter from weather rather than security enclosure for the vehicle
  • Sites where the hardstanding already exists and only the overhead is being added
  • Plots where an open frame can be read as a garden structure that happens to shelter a car

Where it may not fit

Where it may not fit

  • Households needing a lockable, enclosed store for the vehicle or for what is kept with it
  • Very exposed sites where an open frame gives little useful protection from driven rain or snow
  • Frontages where a permanent overhead structure would sit within a restricted zone or sightline

Planning

Planning considerations

  • Design the frame as a garden structure first, because a carport that is only a roof on legs reads as a shed with the sides missing
  • Choose what the roof does before choosing what it is made of, since a planted roof, a louvred roof and a solid roof give completely different amounts of light to the ground beneath
  • A vehicle is a large, coloured, shiny object, so the frame has to be generous enough that the car looks parked inside it rather than pressed into it
  • Where the hardstanding is being upgraded to take a vehicle, the published records treat the layers beneath the surface as the foundation that matters, not the surface itself
  • What may be built in a frontage, and how close to the highway or boundary, depends on local requirements and is worth raising early

Layout

Layout considerations

  • Column positions are set by door swing and by the walk from the vehicle to the house, not by an even structural grid
  • An open frame lets the planting on either side read through it, so what sits beyond the carport becomes part of what you see from the street
  • Leaving one bay of the frame unroofed, or roofed in louvres alone, keeps the structure from reading as a single heavy slab
  • The route from the parked car to the door is the part used every day, and it wants to be the sheltered part

Materials & finishes

Materials and finishes to discuss

Named generically as starting points to discuss with professionals — not specifications, and not priced.

Consider:post-and-beam timber framingglue-laminated beamsgalvanised steel columnstimber louvre bladesgreen roof substrate and sedumpermeable block paving
  • An open frame with a wide roof takes significant wind uplift, and the base connections are where that is resisted
  • A planted roof is a sustained load and a sustained source of moisture, which the frame and the covering beneath it have to be designed around
  • Columns standing in a trafficked surface are vulnerable to impact as well as to the wet band at ground level

Maintenance & durability

Maintenance and durability questions

  • A planted or louvred roof drops material onto the car beneath, which is the trade for the light it lets through
  • An open structure collects wind-blown leaves in its corners with nothing to sweep them out but hand work

Professional review

What to ask a qualified professional

Bring these questions to a designer, contractor or the relevant qualified professional or authority.

  • What foundation and base connection would a structural engineer require for an open frame of this span?
  • How is uplift on a roof with no enclosing walls resisted on this site's exposure?
  • If the roof is to be planted, what additional load and drainage provision does that imply?
  • Does an open structure in the frontage affect permission, boundary distance or visibility requirements locally?
  • Can the existing hardstanding take the point loads of the columns, or does its foundation need reworking?

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