How to Design a Mezzanine Floor for Your Shed

Looking to maximise your shed’s space or ever thought about how to design a mezzanine floor for your shed? Adding a mezzanine floor can be a smart, affordable way to increase usable area without expanding the footprint. Whether you want extra storage or a larger workspace, a well-designed mezzanine will boost your shed’s functionality.

The expert staff at Professional Choice Sheds design dozens of mezzanine floor kits every week. They are experts in talking you through exactly what you need and the strength of floor you need for the purpose you intend using the floor. The following will be helpful but all this information and more is available in one phone call.

Step-by-Step Guide to help you Design a Mezzanine Floor

Here’s a straightforward, step-by-step guide to help you design a mezzanine floor that fits your needs, stays safe, and complies with regulations.

Assess the Space

Start by getting clear measurements of your shed:

Measure height, width, and depth inside the shed. Remember, you are measuring the shed floor where the mezzanine will sit, not wall to wall.
Identify any obstacles like doors, beams, vents, or windows that could affect placement.
Calculate usable floor area for the mezzanine.
Make sure to maintain a minimum clearance of 2.1 meters both below and above the mezzanine to keep the space practical.
The mezzanine floor height will be 150mm higher than the clearance height. The floor will sit on a 150mm beam. That obviously will lower the clearance height of the floor by that amount.
Your mezzanine floor can be designed with a load rating from 1 to 10+Kpa. Most mezzanines are designed for a 3Kpa load rating, that is 300kg per square metre. This would be strong enough for most uses including new office space.

Knowing your exact space and intended use will help you plan a mezzanine that fits perfectly.

Determine the Purpose and Layout of your Mezzanine Floor Kit

Be clear about what you want from your mezzanine:

Is it for storage, an office, or a hobby area?
Design the layout based on the intended use and your shed’s size.
Think ahead — consider future needs or expansion possibilities to avoid rework later.

Your mezzanine’s purpose and strength directly influence how you design it.

Structural Considerations of a Mezzanine Floor in a Shed

A mezzanine must be solid and safe:

Decide on the mezzanine type: “in plane” or “joist over bearer,” depending on your shed’s structure. In Plane tends to be much ‘neater’ and is usually the preferred choice.
Decide on your preferred joist spacing. 600mm is the most common choice but your mezzanine can also be constructed with 450mm joist spacing.
Decide how your mezzanine will be fitted to the floor. Brackets or base plates are the most common choice, but legs can also be cast in.
Confirm your shed can bear the additional weight if you intend using walls as support. It is easy, and recommended, to design a stand-alone mezzanine floor which will not interfere with the structure of the existing shed.
Consult a structural professional like the engineers at Professional Choice Sheds to ensure everything is secure.

Don’t cut corners here — safety and durability come first.

Shed Mezzanine Floor, Access, and Safety

Safe and easy access keeps your mezzanine practical:

Install stairs with handrails that meet standard safety regulations.
Position stairs for convenient access without crowding other shed activities.
Include a reliable means of escape in case of emergency.

Safety features aren’t optional — they’re essential.

Building Regulations

Stay compliant to avoid costly fines or having to redo your work. Professional Choice Sheds does most, if not all of this, for you. All our mezzanines are certified by Edge Consulting, Australia’s largest and most respected business of its kind.

Research local building codes related to mezzanine construction in sheds.
Follow rules on minimum height, stair dimensions, handrails, and fire safety.
When in doubt, consult local authority or a licensed builder.

Professional Choice Sheds supply all your paperwork and plans.

Mezzanine Floor Cost

You can add a lot of space to your work area with little spending!

A small – up to fifteen square metres total may cost around $270 per square metre.

A medium-size mezzanine floor around 50 square metres will cost just over $200 per square metres and a large mezzanine of 80+ square metres could cost as little as $150 per square metre.

Professional Choice Sheds mezzanine floors are designed for DIY installation. You can build it without cutting or drilling. State-of-the-Art engineering plans include a YouTube video link for every joint!

Make Your Shed Work Harder for You- Increase workspace by adding a Mezzanine Floor

You can design a mezzanine floor easily by following these practical steps. It’s even easier with Professional Choice Sheds who do these every day. Let us help you boost your shed’s space and usability while keeping things safe and legal.