What to Consider Before Installing a Carport

Installing a carport is a practical way to create covered parking, but choosing the right structure is only part of the process. The available space, ground conditions, drainage, vehicle dimensions and position of the carport all need to be considered before installation.

Planning these details in advance can help you avoid unexpected complications and ensure the finished structure works well with your property.

Here are the most important things to consider before installing a carport.

1. Choose the Right Location

The first step is deciding where the carport will be positioned.

Think about how you use your driveway and where covered parking would be most convenient. The structure should provide easy access to your vehicle without obstructing entrances, pathways or other parts of the property.

Consider the following:

• Is there enough space for the full structure?

• Can you drive in and out comfortably?

• Will you have enough room to open the vehicle doors?

• Is the proposed location close to an existing entrance?

• Could the structure interfere with windows, doors or other exterior features?

It is also worth considering how the carport will look from the house and the street. A well-positioned structure should work with the existing layout rather than make the driveway feel overcrowded.

2. Attached or Freestanding: Which Design Works Best?

The next decision is whether to choose an attached or freestanding carport.

An attached, or lean-to, carport connects directly to the exterior wall of a building. It can be a practical option when you have suitable space alongside your house and want covered parking close to an entrance.

A freestanding carport is an independent structure. It can be positioned separately from the main building, giving you more flexibility when planning the parking area.

Before choosing, consider the layout of your property, the available space and the suitability of the proposed installation location.

For an attached design, the condition of the wall and the proposed fixing points need to be assessed. For a freestanding structure, the ground and supporting base must be suitable for the design.

3. Measure the Available Space

Accurate measurements are essential when choosing a carport.

Start by measuring the available parking area, including its width and depth. Then consider the dimensions of the vehicle or vehicles that will use the structure.

Do not measure only the vehicle itself. You should also allow room for:

• Opening the car doors.

• Walking around the vehicle.

• Loading and unloading items.

• Manoeuvring into and out of the parking space.

• Access to nearby entrances or pathways.

If you plan to park more than one vehicle, consider how much space will be needed between them.

It is also important to account for any obstacles, such as walls, fences, drainage pipes, trees or existing structures.

Made-to-measure options can be particularly useful when a standard configuration does not fit the available area.

4. Check the Ground and Base Requirements

A suitable base is essential for a stable carport installation.

The ground should be firm, level and capable of supporting the structure. Uneven or unstable surfaces may create difficulties during installation and affect how the finished structure sits.

Depending on the property and the selected carport, the base may need to be prepared before installation.

Common considerations include:

• Ground stability: The surface must be suitable for the structure and its supporting points.

• Level surface: The installation area should be assessed for slopes and uneven sections.

• Foundation suitability: The required foundation or fixing arrangement depends on the carport design and site conditions.

• Existing paving: Check whether the current driveway or paving is suitable for the proposed installation.

• Access for preparation: Make sure the installation area can be reached by the people and equipment needed for the work.

Do not assume that every existing driveway is suitable without an assessment. The correct base and fixing requirements should be confirmed for the specific carport.

5. Plan for Rainwater Drainage

Rainwater management is another important consideration.

A carport roof collects rainwater and directs it towards its drainage points. Before installation, think about where this water will go and whether the proposed location is suitable.

Poorly planned drainage can result in water collecting around the parking area or running towards parts of the property where it is not wanted.

Check:

• The direction of the roof slope.

• The position of gutters and drainage outlets.

• Where collected rainwater will be discharged.

• Whether the existing drainage arrangement can accommodate the additional runoff.

• Whether water could flow towards the house, neighbouring property or pathways.

An integrated rainwater system can help manage runoff from the roof, but the final drainage arrangement still needs to suit the site.

6. Consider the Roofing and Side Panels

The roofing material affects the appearance and practical use of your carport.

What A Garden carports feature 16mm multiwall opal polycarbonate roofing. Its diffused appearance allows natural daylight through while providing a covered parking area.

Side panels are another feature worth considering. They can provide additional coverage and help reduce visibility into the parking space.

Think about how exposed the proposed location is and whether additional side coverage would be useful.

The best configuration will depend on the property's layout, the direction of prevailing weather and the level of coverage you want.

7. Check Planning Permission and Other Requirements

Before installing a carport, check whether planning permission is required.

Some structures may fall under permitted development rights, but this depends on their size, height, position, design and the property itself.

The rules also differ between England, Wales, Scotland and Northern Ireland.

You should check:

• Whether the carport is attached or freestanding.

• Its overall height and distance from property boundaries.

• Its position in relation to the house and highway.

• The area already occupied by extensions and outbuildings.

• Whether the property is listed or located in a designated area.

• Whether permitted development rights have been restricted.

Planning permission and Building Regulations are separate matters, so both should be considered where relevant.

If you are unsure, contact your local planning authority before starting the project.

8. Think About Installation Access

The location may look suitable on paper, but it is also important to consider how the structure will be delivered and installed.

Check whether there is enough access to bring materials and equipment to the installation area. Narrow side passages, gates, steps and restricted driveways may affect how the work can be carried out.

For an attached carport, the installation team may also need suitable access to the wall and fixing locations.

It is useful to discuss these details when requesting a quote so that any potential site restrictions can be identified early.

9. Choose a Design That Complements Your Property

A carport is a visible addition to your home, so its appearance should be considered alongside its practical features.

Aluminium is a popular choice for contemporary carports because it combines a clean architectural look with corrosion resistance.

Powder-coated finishes also provide colour options to complement the existing exterior. Anthracite Grey (RAL 7016), for example, works particularly well with modern window frames and neutral exterior finishes.

Consider the frame colour, roof appearance, side panels and overall proportions before making your final choice.

10. Understand the Cost and Timescale

The total project cost depends on several factors, including:

• The dimensions of the carport.

• Whether you choose an attached or freestanding design.

• The selected configuration and additional panels.

• Ground preparation and fixing requirements.

• Delivery and professional installation, where required.

If you need a made-to-measure structure, provide accurate measurements and details about the installation location when requesting a quote.

This helps ensure the proposed design and price reflect the actual requirements of your project.

Carport Installation Checklist

Before moving forward, make sure you have considered the following:

• Selected a suitable location.

• Decided between an attached and freestanding design.

• Measured the available space and vehicle dimensions.

• Checked the ground and base requirements.

• Planned the roof drainage arrangement.

• Considered roofing and side panel options.

• Checked planning permission and relevant regulations.

• Confirmed access for delivery and installation.

• Reviewed the dimensions, configuration and overall quote.

Find the Right Carport for Your Property with What A Garden

A successful carport project starts with choosing a structure that suits the property, available space and everyday parking needs.

What A Garden offers lean-to wall and freestanding aluminium carports with made-to-measure sizing and colour options. Our designs feature powder-coated aluminium frames, 16mm multiwall opal polycarbonate roofing, aluminium side panels and an integrated rainwater system.

Explore our carport collection to compare the available designs. Contact our team for a free quote and discuss the dimensions and configuration that would work best for your property.

Our estimated delivery time is 3–4 weeks.