Tips for Side Paths, Driveways & Courtyards

As more Australians build upward instead of outward, every square metre of usable space becomes prime real estate. For homeowners and builders in cities and suburbs alike, installing a rainwater tank often comes down to one question: Where can I fit it?

Thankfully, slimline water tanks offer a smart solution for tight residential blocks, narrow side paths, and even driveways. Whether you live in Sydney, Brisbane, Melbourne, or regional Australia, this guide will help you plan, install, and maintain a slimline rainwater tank that delivers water savings—without stealing your backyard.

Let’s walk through the process.

Why Choose a Slimline Water Tank?

Not all water tanks are created equal—and when you’re short on space, slimline tanks are a game-changer.

Unlike traditional round tanks, slimline models are long and narrow, designed to hug fences, walls, or garage sides while still offering thousands of litres of storage. Their low-profile, upright form makes them ideal for:

Narrow side access between homes
Compact courtyards
Urban infill developments
Driveways and carports (with the right traffic-rated specs)
Fun fact: The Water Tank Factory’s 5,000 Litre Slimline Tank (SL5000UR) packs the same water storage as some backyard pools—while only taking up 940mm of width. That’s narrower than a washing machine.

Explore your options: 5000 Litre Slimline Water Tank

Pre-Installation Planning: Measuring, Access & Council Rules

Before you order your slimline tank, do a quick checklist:

Measure Your Available Space
Use a tape measure to determine:
– Minimum width (The Water Tank Factory’s SL2000UR starts at 625mm wide)
– Total available height (consider gutter and window clearance)
– Length available along fence lines or walling
Site Access for Delivery
Even the slimmest tanks are long—up to 3 metres for the 5,000L model—so check:
– Can the tank be wheeled or carried in?
– Are there stairs, fences, or tight corners?
Local Council Regulations
– In many areas (e.g. NSW), water tanks over a certain size or height may require council approval
– BASIX rules may apply if you’re installing a tank for a new build
– Ensure correct stormwater connections if required

Pro tip: Installing your tank on a boundary line? Check that overflow doesn’t affect your neighbour’s property.

Best Locations for Slimline Tanks

Not all narrow spaces are created equal. Here’s where slimline tanks shine:

1. Side Pathways

Ideal for tanks up to 5,000L.

• Choose a slim base to preserve walking access.
• Install flush against your wall or fence (keep a gap for airflow and maintenance).

2. Under Eaves or Awnings

• The 2,000L Slimline (SL2000UR) is only 1930mm high, perfect for low-clearance areas.
• Ensure downpipe alignment for clean stormwater capture.

3. Courtyards or Behind Garages

• Paint the tank to match surrounding structures (or choose from The Tank Factory’s 24 Colourbond® colours)
• Use trellises or planter boxes to soften visual impact

4. Along Driveways (with caution)

• Use only in non-traffic zones unless specified as trafficable.
• Avoid blocking doors, meters, or access points.

Choosing the Right Tank Size for You

Current prices (as of Winter 2025):

• 2,000L: $1,160
• 5,000L: $1,875 (Winter Special; normally $2,350)

See full range: Slimline Water Tanks

Base Preparation & Installation Tips

Installing a slimline water tank is simpler than many homeowners expect—but preparation is key.

1. Stable, Level Base

• Use compacted crusher dust, concrete, or a purpose-built tank stand
• The base should be at least 100mm wider than the tank footprint

2. Tank Positioning

• Ensure the outlet is accessible
• Leave room to install accessories (tap, level indicator, pump)

3. First Flush & Filtration

• Install a first flush diverter to keep debris out
• Add a leaf strainer at the top inlet

4. Overflow Management

• Direct overflow to garden beds, stormwater drains, or detention pits

5. Pump Integration

• Pair your slimline tank with a matched pump and accessory bundle for hassle-free water access
• Explore: Water Tank Pump Bundles

Maintenance Made Easy

Even the sleekest tanks need a little love.

Maintenance Tips:

• Quarterly: Check the leaf strainer and first flush diverter for blockages
• Annually: Flush any sediment that may accumulate
• Every 6–12 months: Inspect your pump, tap, and connections for wear

Slimline tanks are made from UV-stabilised food-grade polyethylene, meaning they’re durable, algae-resistant, and require minimal ongoing care.

Surprising Benefits of Slimline Tanks

• Thermal Efficiency: Their vertical design often helps maintain cooler water temperatures than shallow tanks.
• Fire Readiness: Store emergency water for bushfire zones in hidden side-yard tanks.
• Visual Integration: Paint or screen your tank to blend seamlessly into your property design.

The Smart Choice for Modern Aussie Homes

Installing a slimline tank isn’t just about saving space—it’s about future-proofing your home. Whether you’re managing stormwater, prepping for drought, or simply slashing your water bills, a well-placed slimline water tank makes sense in today’s climate.

With so many variables—tank width, access restrictions, council regulations, colour matching—it helps to work with a team that knows the ins and outs of tight installations.

That’s where The Water Tank Factory stands apart.

From side-path-friendly 2,000L models to high-capacity 5,000L tanks that tuck neatly along your fence, we’ve helped thousands of Australians fit rainwater storage into impossible spaces. Add to that our commitment to premium poly tank manufacturing, colour-matching options, and direct-to-you pricing—and you’ve got a supplier that doesn’t just talk smart storage, but delivers it.

Still unsure what will fit your space?

Give our friendly team a call on 1300 826 532  or browse our complete slimline range online to find your perfect match.

We are here to help you discover: Big savings. Small footprint. No compromise.