Under Sink Storage Ideas for Small Bathrooms | KAIROHUBS

June 1, 2026

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Under Sink Storage Ideas for Small Bathrooms — Make the Most of Every Inch

Disclosure: KAIROHUBS USA sells the products featured in this guide. All recommendations are based on product specifications, real dimensions, and customer use cases — not paid placements.

Last updated: June 2026

Why Regular Storage Solutions Fail Under the Sink

Before getting to the products, it's worth understanding why the under-sink cabinet defeats most organizers.

The pipes are the obvious problem. Every under-sink cabinet has a drain pipe running down the center and supply lines running up the sides. Fixed shelves can't accommodate them. Stackable bins sit awkwardly around them. The pipe placement means the usable width on each side of the cabinet is often only 8–12 inches — narrow enough that items get buried behind each other immediately.

The second problem is depth. Most bathroom under-sink cabinets are 18–22 inches deep. Anything placed at the back is effectively invisible and unreachable without removing everything in front of it. This is why the typical under-sink cabinet becomes a place where things go to be forgotten.

Pull-out organizers fix both problems at once. They slide forward on a track, bringing the back of the cabinet to you. They sit on the cabinet floor rather than requiring wall attachment, so pipes aren't an obstacle. And because each tier is independently accessible, you can see and reach everything without moving anything out of the way.

Why Under-Sink Cabinets Are So Hard to Organize

Before getting into the products, it’s worth understanding why the under-sink cabinet is uniquely difficult to organize compared to other storage spaces.

The pipe problem. The drain pipe and supply lines run through the center of the cabinet, which means you can’t use a single large bin or shelf that spans the full width. Any organizer needs to work around the plumbing or be sized to fit beside it.

The depth problem. Under-sink cabinets are typically 18–24 inches deep. Items placed at the back become invisible and unreachable — which is why things get lost under the sink and forgotten. A flat shelf doesn’t solve this. A pull-out organizer does.

The height problem. Cabinet heights vary significantly. An organizer that’s too tall won’t fit; one that’s too short wastes vertical space. Adjustable and tiered options solve this.

The products below address all of these constraints directly.

The Best Under-Sink Storage Organizers

2-Tier Pull-Out Cabinet Organizer — Under Sink Sliding Storage Drawer with Hooks

The best all-around under-sink organizer for most bathrooms.

The Two Products Worth Using

KAIROHUBS 2-Tier Pull-Out Cabinet Organizer with Hooks — $53.02

Dimensions: 39cm H × 40cm D × 23cm W

This is the right choice if your under-sink cabinet is deeper than 18 inches and you store a high volume of items — cleaning supplies, toiletries, hair tools, and extra products all in the same space.

The two-tier design doubles your storage without doubling your footprint. The top shelf handles daily-access items: hand soap refills, cleaning spray, the products you reach for every morning. The bottom drawer pulls out independently and sits lower, which makes it ideal for taller bottles — shampoo, conditioner, body wash — that don't fit on a standard shelf without tipping.

The side hooks are the detail that makes this organizer genuinely useful rather than just functional. Spray bottles, cleaning gloves, hair dryer cords, and microfiber cloths all hang from the side instead of taking up shelf space. In a cabinet where every square inch matters, the hooks convert dead vertical space into active storage.

At 23cm wide, it fits most standard bathroom under-sink cabinets comfortably alongside the drain pipe — you can position it to the left or right of the plumbing depending on your cabinet layout. The 40cm depth means it uses the full cabinet depth, so nothing gets lost at the back.

Best for: Larger bathrooms, households with multiple people sharing one cabinet, anyone who stores more than just cleaning supplies under the sink.

Shop under-sink 2-Tier Pull-Out Cabinet Organizer

KAIROHUBS Pull-Out Under Sink Storage Organizer 2-Pack — $35.62

Best for: Smaller cabinets, renters who want flexibility, anyone who prefers two separate zones over one combined unit.

The 2-pack approach works differently from the single two-tier organizer. Instead of one unit that handles everything, you get two independent pull-out trays that sit side by side — one on each side of the drain pipe. This is often the better fit for bathrooms where the center pipe takes up significant width, because each tray slides forward independently without having to navigate around the plumbing.

The practical advantage of two separate organizers is zone separation. One tray becomes your cleaning zone — products you use for bathroom cleaning, spare rolls, toilet bowl cleaner. The other becomes your personal care zone — extra soap, shampoo refills, skincare backup products, anything that belongs under the sink but doesn't need to be on the counter. Because the trays are independent, you pull out only what you need rather than disturbing the entire cabinet.

At $35.62 for two units, this option also gives you more total surface area per dollar than a single organizer. If your bathroom cabinet is narrow or your pipe placement makes a wider single unit awkward, the 2-pack adapts more easily to whatever space you have.

Shop under sink Pull-Out Under Sink Storage Organizer

Which One Is Right for You

	2-Tier with Hooks ($53.02)	2-Pack ($35.62)
Best for	Deeper cabinets, high volume	Narrow cabinets, pipe-heavy layouts
Storage levels	2 tiers + side hooks	2 independent flat trays
Tall bottle storage	Yes — lower drawer accommodates	Limited — single-level only
Zone separation	One unit, two levels	Two units, side by side
Price	$53.02	$35.62

If your cabinet is deeper than 18 inches and you store a lot under the sink, go with the 2-tier organizer. If your cabinet is narrow or the pipe runs down the center and limits your width, the 2-pack fits more cleanly around the plumbing.

How to Set Up Your Under-Sink System

Step 1: Measure before you order. Check your cabinet's interior width (side to side), depth (front to back), and clearance height (floor to the bottom of the cabinet frame). The pipe reduces your usable width — measure the space to the left and right of the drain separately, not the full cabinet width.

Step 2: Empty the cabinet completely. Everything comes out. Wipe down the cabinet floor. This is the one moment where you can see exactly what you have and decide what actually belongs under the sink versus what migrated there over time.

Step 3: Sort before you store. Before placing the organizer, separate your items into two categories: daily access (things you reach for every few days) and backup stock (refills, extras, things you open once a month). Daily access items go on the front tier or top tray. Backup stock goes to the back tier or second tray.

Step 4: Place the organizer. Slide it in alongside or around the pipe depending on your cabinet layout. No drilling, no installation — the organizer sits on the cabinet floor and slides on its own track.

Step 5: Test the pull-out. Fully load the organizer and pull it out several times. The weight of cleaning supplies and full bottles is the real test — it should slide smoothly without catching. If it's stiff, check that the cabinet floor is level and the organizer sits flat.

What Else to Keep Under the Sink

Once the pull-out organizers are in place, a few additional products from the KAIROHUBS bathroom collection work well in the remaining space:

The Adhesive Wall Mounted Bathroom Storage Basket ($24.53–$32.97) mounts inside the cabinet door — the inside of the door is almost always unused and adds a full shelf’s worth of storage for small items like cotton balls, hair ties, and travel products.
The Adhesive Wall Mounted Hair Dryer Holder ($13.10) mounts inside the cabinet or on the wall beside it, keeping the hair dryer and straightener off the cabinet floor and out of the way of the pull-out organizers.
The Self-Draining Soap Dish ($8.57) keeps spare soap bars dry and contained rather than leaving them to melt in a puddle on the cabinet shelf.

Frequently Asked Questions

Will a pull-out organizer fit around the drain pipe? Yes — both products are designed to sit on either side of the drain pipe rather than requiring the full cabinet width. Measure the space to the left and right of your pipe separately and compare against the organizer's width (23cm for the 2-tier unit) before ordering.

Do these organizers require any installation? No. Both sit on the cabinet floor and slide on their own track. No drilling, no adhesive, no tools. They're fully renter-safe and remove cleanly when you move.

How much can I store in the 2-pack organizer? Each tray in the 2-pack holds a full row of cleaning supplies or toiletries. Most bathrooms can fit spare rolls, a cleaning spray, backup soap, shampoo refills, and personal care items across both trays with room to spare.

Is the 2-tier organizer too tall for most bathroom cabinets? At 39cm, it fits most standard bathroom under-sink cabinets, which typically have 35–45cm of vertical clearance. Measure your cabinet's interior height before ordering — specifically from the cabinet floor to the bottom of the cabinet frame, not the top of the sink basin.

What's the difference between using this in a kitchen vs. bathroom? The pull-out mechanism works identically in both spaces. The main difference is what you store. In bathrooms, the organizer typically holds cleaning supplies, toiletries, and personal care items. In kitchens, it holds cleaning products, dish soap, and under-sink cleaning supplies. Both products in this guide work in either location.

For the complete bathroom organization system — including shower caddies, wall-mounted baskets, and no-drill hair tool storage — see our Best Bathroom Organizers for Small Apartments guide.

To extend the same pull-out system to the rest of your small apartment, see our Small Apartment Organization Ideas on a Budget guide.

The under-sink cabinet isn't a lost cause — it's just a space that needs the right system. A pull-out organizer doesn't add storage. It activates the storage you already have.