Usually yes — but check the rules for your specific car park first, and use a method that produces no run-off. A rinseless wash from a single bucket is the practical answer, because there's nothing to rinse away and no water going anywhere it shouldn't.
Washing with a hose or a pressure washer in a shared car park is a different matter, and in most cases it isn't allowed.
Check the rules before anything else
- Residential car parks and permit schemes. Many have byelaws or tenancy conditions prohibiting vehicle maintenance, often drafted broadly enough to include washing. Check your lease, tenancy agreement or the managing agent's rules.
- Multi-storey and public car parks. Terms usually prohibit vehicle maintenance. Enforcement varies enormously, but the rule generally exists.
- Workplace car parks. Ask. Most employers won't mind a quiet twenty minutes at lunchtime, and asking costs nothing.
The reason most rules exist is water. Run-off in an enclosed structure is a slip hazard and a drainage problem. A method that produces no run-off removes the objection the rule was written for — though it doesn't remove the rule, so it's still worth asking.
Why a multi-storey is actually good for washing
- No direct sun. Sunlight on a panel is the main cause of streaking. Strip lighting is ideal.
- No wind. Nothing blowing dust back onto a wet panel.
- Level ground and space. Easier than a cambered road with traffic passing.
- No rain. You can wash in January without getting soaked.
What you need to bring
A bucket of warm water — fill it at home and carry it, or use the tap in the building if there is one. A rinseless concentrate, a wash pad, and four microfibre towels. Everything fits in the boot. Nothing needs a power supply or a tap.
Practical things people forget
- Take your used water home. Don't tip a bucket down a car park drain — that's the behaviour the rules exist to stop, and it undoes the goodwill.
- Park considerately. You need space to open doors and walk round. Do it at a quiet time.
- Bring a bin bag for used towels so you're not carrying wet microfibre.
- Be quick and unobtrusive. Twenty minutes and gone is a different thing to setting up for an afternoon.
The winter case
This is when it matters most. Road salt is applied from October to April, it's corrosive, and it accumulates in wheel arches, sills and the underside. A dry multi-storey in January is a far more comfortable place to deal with that than a wet street, and it's often the only realistic option for someone without a driveway.
The One-Bucket Wash is a rinseless concentrate designed for exactly this — one bucket of warm water, no rinse, nothing to run away.
Streetside makes car care for people who park on the street. Join the list and we'll tell you when we launch.