Empty the Cabinet and Audit Every Item

Remove absolutely everything, including the old sponge at the back and the bottle of surface cleaner that expired in 2023. Lay each item on the floor or counter so you can see the full volume of what you actually store under there.

Wipe down the inside of the cabinet with your cleaning spray or warm soapy water. Check the base for water rings, rust, or sticky residue from leaked products. Dry the space thoroughly with a towel before you start placing anything back.

Sort into Three Zones: Daily, Weekly, and Emergency

Create three piles on your work surface. The daily zone holds items you reach for multiple times a week: washing-up liquid, hand soap refill, a scrub brush, and the sponge caddy. The weekly zone covers floor cleaner, glass spray, and cleaning cloths you use during a proper clean. The emergency zone is for rarely used items like pipe cleaner, a plunger, spare washing-up sponges, or extra bin bags.

Be honest about what you actually use. If you have three half-empty bottles of the same all-purpose cleaner, keep the fullest one and set the others aside to use up in another room or give away.

Measure the Cabinet and Mark the Pipe Obstacles

Use your measuring tape to record the cabinet's internal dimensions. Write down the depth from front to back, the width between the side walls, and the height from the base to the underside of the worktop. Then measure where the drainpipe and U-bend sit. These pipes often sit toward the back, leaving a wedge of usable space at the front-left or front-right.

Sketch a simple top-down rectangle on paper and draw the pipe layout inside it. Mark how much clearance you have above and around the U-bend. This sketch tells you where you can fit tall bottles and where you should only store flat, shallow items.

Layer the Floor with Waterproof Protection

Cut a strip of adhesive vinyl shelf liner or a cut-to-size plastic tray to fit the base of the cabinet, working around the pipe columns. This is not decorative; it creates a wipeable surface that contains small spills before they soak into the cabinet board.

If you prefer, use a large plastic plant saucer or a boot tray. The tray should be big enough to catch drips from bottles but thin enough to slide in and out for cleaning. Avoid leaving bare MDF or particleboard exposed because water damage weakens the cabinet structure over time.

Place a small square of shelf grip or a silicone mat in the zone where the washing-up liquid will live, as this bottle tends to drip the most.

Install the Daily-Use Caddy on the Door or Front Wall

Use an over-the-door caddy that hooks onto the inside of the cabinet door, or fit a shallow wall-mounted rack on the front frame or side wall. This is the prime real estate because you can see it without bending down or reaching into the dark recess.

Place your most-used spray bottles, washing-up liquid, and the sponge in this caddy. Keep the weight low and balanced; heavier items should sit on the bottom of the caddy or on the cabinet floor directly in front of the door to avoid straining the hinges.

Place Tall Bottles and Spray Triggers in the Front Area

Stand your taller bottles, such as floor cleaner or glass spray with long triggers, in the open front section of the cabinet floor. Keep them near the front edge so you can grab them without disturbing the items behind.

Group them by frequency of use. Put the floor cleaner and multi-surface spray closest to the door; place the furniture polish and oven cleaner further back. If a bottle is too tall to stand upright and blocks the shelf above, lay it on its side only if the cap is fully sealed and you have tested it for leaks.

Add a Slim Pull-Out Rack or Lazy Susan for the Side Gaps

Insert a narrow pull-out rack in the gap beside the drainpipe or fit a small lazy Susan in the corner pocket that the pipe leaves. These side spaces are usually too narrow for full-width bins, but they hold a surprising amount of cleaning cloths, spare sponges, and smaller bottles.

Load the lazy Susan with the emergency and weekly items: stainless steel cleaner, scouring pads, and rubber gloves. Spin it to see what is at the back, which eliminates the reach-and-pray method that leaves forgotten bottles at the far end.

Compress and Contain the Bin Bag Roll

Take the bin bag roll out of its bag and slip it onto a holder that mounts on the inside of the cabinet door, or place the roll in a deep, narrow container standing upright. The goal is to stop the roll from unravelling every time you pull a single bag.

If you use a free-standing roll holder, position it at the front edge of the cabinet so you can pull a bag without moving other items. Alternatively, flatten the roll and place it in a shallow open box on the cabinet floor or on a lower shelf.

Stack, Don't Scatter: Use Tote Bins for Small Items

Gather loose items like rubber gloves, spare sink plugs, cloths, and small brushes, and place them into a single clear plastic tote or a set of shallow, stackable trays. Clear totes let you see the contents at a glance. Use open-top bins for items you access weekly and lidded tubs only for rarely used emergency items.

Label each tub with a permanent marker or a label maker: "Cloths", "Sponges", and "Plumbing Spares". Place the most frequently used tub on top, with the least used at the bottom of the stack.

Add a Shallow Shelf for the Space Above the Pipes

If your cabinet has a tall gap above the U-bend, install a tension rod or a small wire shelf that sits above the plumbing. This creates a second storage level that does not interfere with the pipework. Use this shelf for lightweight emergency items: a spare bottle of washing-up liquid, a microfibre cloth pack, or an extra roll of bin bags.

Do not stack anything directly on top of the U-bend itself because that creates pressure points and blocks access if you need to unscrew the trap for cleaning. Ensure at least 5cm of clearance above the highest pipe fitting so you can work around it.

Test the Layout and Adjust Before You Commit

Close the cabinet door to make sure nothing catches or blocks the hinges. Pull each item out once: the spray bottle, the bin bag roll, the cleaning cloths. If you drop something or feel a lot of resistance, rearrange now rather than after you have lived with the layout for a week.

Check that the front caddy does not collide with the shelves you have hung above it. Confirm you can still reach the main shut-off valve or at least see it clearly. The objective is a functional layout, not a perfect one, so be prepared to swap the heavy items to the side of the cabinet that you open most often.

The Pipework Blocks Easy Access

The central U-bend makes it impossible to slide a full-width bin into the cabinet. Work around it by using the side pockets for slim items, and keep the front section for the bulky bottles. If you have a double cabinet where the pipe runs down one side, dedicate the pipe-free side to tall items and the pipe side to flat containers.

The Cabinet Smells Musty or Damp

Damp smells usually mean a slow leak, condensation from pipes when you run cold water, or a forgotten wet sponge. Wipe the cabinet floor and walls with a mix of water and white vinegar, then dry completely. Place a small silica gel pot or an open box of bicarbonate of soda at the back of the cabinet to absorb moisture and odours.

The Lazy Susan Keeps Colliding with the Pipes

Standard lazy Susans need a flat circular footprint, which the pipe often interrupts. If your turntable catches, remove it and switch to a pull-out wire basket or a simple shallow tray that slides forward. Alternatively, use a smaller diameter turntable, around 20cm wide, positioned at the front corner of the cabinet where the pipe does not reach.

Bottles Drip and Leave Sticky Residue on the Liner

Most bottles have a small film of residue on the rim from ordinary use. Before you place them back, wipe the necks and caps with a damp cloth. For the bottle of washing-up liquid that always runs, set it in a small plastic cup or a low dish that catches the drips.

Every Keeps Falling Forward When You Shut the Door

Tall bottles or caddies tilt toward you when the door opens and never sit flat. Fix this by placing a non-slip shelf liner underneath all items, or by using a door-mounted caddy for the smaller items so the floor stays clear for the heavy bottles.

Install a Pull-Out Drawer System for the Full Cabinet

If you have a wide cabinet, fit a purpose-built under-sink pull-out drawer that sits on a metal frame and rolls forward, leaving a clear gap above the pipes. These units are designed with a notch or a low-profile base that fits around the plumbing. You gain the efficiency of a drawer without sacrificing access to the pipework.

This is one of the higher-investment upgrades but it genuinely changes how you use the space. Before you buy, measure the height of the U-bend; most systems are designed to accommodate a standard 10cm trap, but you need to confirm the clearance where the pipe exits the back wall.

Use Tension-Rod Dividers for Vertical Bottle Storage

If your cabinet is tall enough, install a tension rod horizontally at the front of the cabinet, about 10cm from the door. Lay spray bottles with their triggers on the floor and let the neck rest against the rod. This tilts the bottles back and stops them from falling forward.

This trick works best for wide, shallow cabinets where you want to see several bottles at once. It also creates a natural division between the front storage and the back-of-cabinet area, which improves depth organisation.

Create a Small Emergency Leak Kit

Set a tiny plastic box, about the size of a sandwich container, inside the cabinet. Fill it with a roll of plumber's tape, a replacement rubber washer, and a small adjustable spanner. This kit is for emergencies only, so it should stay sealed and untouched during normal use.

This is a practical step that many guides skip. Knowing you can tighten a loose nut or wrap a joint in the middle of the evening without going to a shop is hugely reassuring.

Reserve a Zone for Your Kitchen Compost Bin

If you collect kitchen scraps for compost or food waste recycling, dedicate a small open caddy in the under-sink space for the liner and the daily compost container. Avoid placing the caddy directly on the cabinet floor; set it on a small plant saucer or tray so any juice leakage is contained.

This works well in a household that cooks often and dislikes the smell of compost sitting on the counter. It keeps the bin out of sight but close to the sink where you rinse and chop.