5 Small RV Bathroom Sink Ideas: Space-saving sink designs and practical tips I’ve used in real tiny bathrooms

I once had a client ask me to fit a full double-sink vanity into a 1.5m-wide RV bathroom — I laughed, then drew something that actually worked. Tiny bathrooms force you to be creative, and that’s one reason I love them: small RV bathroom sinks can spark big ideas. In this article I share five practical, tested design inspirations I’ve used in real projects to maximize function without making the space feel cramped.

1. Corner Sink with Integrated Counter

A triangular corner sink is a classic RV trick I recommend often. It tucks into unused corner space, leaving more circulation room and offering a small ledge for soap or a toothbrush cup. The upside: excellent space efficiency and a cleaner path in multi-use bathrooms. The downside: less counter surface and sometimes trickier plumbing access — I solved that once by using flexible supply lines and an access panel.

save pin

2. Wall-Mounted Fold-Down Sink

I’ve installed fold-down sinks in tiny campers when clients needed occasional basin space but didn’t want permanent bulk. When folded up it’s nearly invisible; when down it gives a usable sink and shallow counter edge. Pros: maximal floor clearance and visual openness. Cons: more moving parts to maintain and slightly less robust feel than fixed sinks — but with quality hinges it performs well.

save pin

3. Slim Vanity with Drawer Storage

For those who want storage without width, a slim vanity (12–16 inches deep) is my go-to. Pair it with shallow, well-organized drawers for toiletries and cleaning supplies. The advantage is hidden storage and a finished look; the trade-off is limited counter area, so I recommend integrated soap dispensers and vertical organizers to keep things tidy.

save pin

4. Integrated Shower-Sink Combo

One of my more adventurous solutions was a shower sink combo where the sink sits just outside the shower curtain on a shared wet wall. It reduces separate plumbing runs and keeps everything compact. It’s brilliant in ultra-small RVs, but be mindful of splash management and materials that stand up to moisture — I used water-resistant laminate and silicone seals in that project.

save pin

5. Portable Basin with Lockable Shelf

If you prefer flexibility, a portable basin that nests into a lockable shelf or cabinet is surprisingly practical. Use it for quick hand washes or when guests visit, then stow it away to reclaim surface area. The plus is versatility and easy replacement; the minus is you need a place to store it and a reliable latching mechanism so it doesn’t shift while driving.

save pin

Practical Tips and Budget Notes

For budget builds, look for off-the-shelf tiny van fittings and repurpose marine plumbing parts — they’re built for movement. If you want a more polished finish, invest in custom millwork or a compact molded sink. I often recommend clients prioritize durable materials over expensive aesthetics in an RV environment because wear and movement happen fast.

save pin

Tips 1:

Measure twice and mock up with cardboard — it saved me from a lot of regrets. If you want to visualize different layouts before cutting or buying, try the 3D floor planning case I used to validate clearances early in design, which helped me avoid costly mistakes.

save pin

FAQ

Q: What is the ideal sink size for a small RV bathroom?

A: Aim for 12–16 inches (30–40 cm) wide for a balance of usability and space saving. Smaller corner or wall-mounted sinks can be narrower if needed.

Q: Are portable basins hygienic enough for daily use?

A: Yes, especially if made from non-porous materials and cleaned regularly; they’re great for occasional or secondary sinks but may be less convenient for heavy daily use.

Q: How do I prevent leaks in an RV sink installation?

A: Use flexible supply lines, marine-grade fittings, and secure all joints with appropriate thread sealant. Add an access panel for regular inspection.

Q: Can I install a regular home sink in an RV bathroom?

A: Often not practical due to weight, depth, and plumbing constraints; choose lightweight, shallow-profile fixtures designed for tiny spaces.

Q: What materials resist moisture and movement best in RV bathrooms?

A: Marine plywood, PVC-based laminates, and stainless steel or solid-surface sinks resist moisture and vibration well. For reference, marine construction guidelines from the American Boat and Yacht Council are a reliable source.

Q: How do I manage limited counter space around the sink?

A: Use vertical storage, magnetic organizers, or integrated dispensers. Fold-down or retractable accessories can add function when needed.

Q: Are corner sinks comfortable for everyday use?

A: They’re surprisingly comfortable if positioned at the right height; the trade-off is less counter area, but for many RV users the saved space is worth it.

Q: Where can I test layouts before buying fixtures?

A: I often rely on an online free floor plan creator to mock up dimensions and check clearances before purchase; it prevents layout errors and helps pick the right sink size.

save pin