Who Is This For?
A LouMil garden gym means no more queues for equipment or wasted membership fees. Perfect for fitness enthusiasts, personal trainers, and anyone serious about their health and training routine.
Our garden gyms across the West Midlands and Worcestershire are designed around your equipment: we plan wall-mounted TVs, mirrors, storage, racking and specialist flooring for lifting areas.
Our Garden Gym Projects
What's Included
Typical Build Specification
Our garden gyms are built for serious training. A typical build includes:
Pricing: Every garden gym is individually priced based on size and specification. Contact us for a free, no-obligation quote.
Garden gyms typically start from £9,500 inc. VAT.
Every building is bespoke. We'll design yours around your training setup and equipment requirements.
Why Choose LouMil Garden Buildings?
We build garden rooms the way they should be built – properly insulated, professionally finished, and designed to last.
Premium Build Quality
Heavy-duty timber frame construction built to last decades, not years. Every joint, fixing and finish is done properly.
Full Insulation
Walls, floor and roof fully insulated with proper membranes. Warm in winter, cool in summer – a real room, not a shed.
EPDM Rubber Roofing
High-quality EPDM roofing as standard with 20+ year lifespan. Fully watertight, no leaks, no maintenance worries.
Electrics & Heating Included
Full electrical installation, lighting, sockets and heating all included. Ready to use from day one.
Local West Midlands Team
Hands-on West Midlands team — installing across the UK. You deal with the same people from enquiry to handover, never a sales rep.
10-Year Structural Guarantee
Full 10-year guarantee on the structure. We stand behind our work and we're here if you ever need us.
Built By Our Own Team
No subcontractors, ever. The same people who quote your job are the ones who build it on site.
Fixed-Price Quotes
Clear, fixed-price quotes with no hidden extras. The price we quote is the price you pay.
Garden Gyms Across the West Midlands
We build bespoke garden gyms for fitness enthusiasts throughout the region:
Garden Gym Buying Guide
Everything To Consider Before You Build A Garden Gym
What size garden gym do you actually need?
Sizing is the single biggest decision, and most people underestimate it. A gym needs clear floor space around every piece of equipment, not just space for the equipment itself. A squat rack needs a metre of clearance behind it for walk-outs, a treadmill needs run-off space, and a bench press needs room for a spotter to stand.
As a rough guide, a 3m x 3m building suits bodyweight training, a bike or rower and a set of dumbbells. A 4m x 3m building comfortably takes a rack, bench and cardio machine. Anything with a full free-weight setup, cardio zone and stretching area is realistically 5m x 3.5m or larger.
- 3m x 3m — cardio machine, dumbbells, mat space and storage
- 4m x 3m — rack, bench, bar and a single cardio machine
- 5m x 3.5m — full free-weight setup with dedicated stretching zone
- 6m x 4m — home gym plus sauna, shower or changing area
Flooring: the part people get wrong
A standard garden room floor is not built to take repeated deadlift drops. We reinforce the joist structure under lifting areas and specify heavier-duty decking beneath the finished floor, so the structure absorbs impact rather than flexing.
On top of that, most clients fit rubber gym matting or heavy-duty rubber tiles. We can leave the floor finished in laminate ready for you to lay matting, or we can advise on thickness — 15mm is fine for general training, 30mm to 40mm is the sensible choice if you drop loaded barbells.
Heating, ventilation and condensation
Training generates a lot of moisture. Without airflow, that moisture condenses on cold surfaces and eventually causes problems. Every LouMil gym is fully insulated in the floor, walls and roof with a breathable membrane, and we specify opening windows or trickle vents so warm damp air has somewhere to go.
For heating, a wall-mounted electric panel heater on a thermostat is included as standard and takes the chill off in minutes. Many gym clients upgrade to an air conditioning unit, which cools in summer and heats efficiently in winter — worth it if you train hard year-round.
Running costs and long-term value
Because the building is properly insulated, the heater rarely runs at full output. Most clients report running costs comparable to heating a single room in the house — and considerably less than a family gym membership over a year.
A well-built garden gym also holds its value. Unlike a temporary structure, an insulated, electrically connected building on a proper foundation is a permanent asset that many buyers see as usable extra space.
Garden Gym FAQs
The questions we get asked most often by clients planning a home gym.
Do I need planning permission for a garden gym?
In most cases no. Garden gyms usually fall under permitted development provided the building is single storey, under 2.5m high within 2m of a boundary, used incidentally to the house, and does not cover more than half the garden. Listed buildings, conservation areas and some new-build estates have extra restrictions, so we check your situation before we quote.
Can the floor take heavy weights and deadlifts?
Yes. We reinforce the joists and sub-floor beneath lifting areas as standard on gym builds. Combined with rubber matting of 30mm or thicker, the floor will comfortably handle loaded barbell work.
How much does a garden gym cost?
Turnkey garden gyms typically start around the mid-teens for a compact insulated build and rise depending on size, cladding and glazing. Every LouMil price is fixed, all-inclusive and includes insulation, electrics, heating and installation. Use our online calculator for an instant figure on your chosen size and spec.
Can I have a shower or sauna in my garden gym?
Yes. We regularly build gyms with a partitioned shower room or a sauna cabin. Plumbing and drainage need planning at design stage, so mention it early and we will design the layout, waste runs and ventilation around it.
Will it be warm enough to train in winter?
Yes. Full floor, wall and roof insulation plus a thermostatic heater keeps the space comfortable year-round. Most clients find the room warms up in ten to fifteen minutes and then holds temperature easily during a session.
How long does installation take?
Typical garden gym installations take 3-5 days on site depending on size and groundworks. Ground screw foundations mean no lengthy concrete curing, so we can move quickly once we start.