Why a feature wall in limewash instead of paint
Standard feature-wall paint sits flat and uniform, one colour, one sheen, the same in every light. Limewash moves. Because it's brushed on in thin translucent layers rather than rolled on as one opaque coat, you get genuine depth and tonal variation across the wall, cloudier in some patches, warmer in others, shifting slightly as the light in the room changes through the day. It's the difference between a wall that's been coloured and a wall that has texture.
It also suits rooms where a fully matte, non-reflective surface matters, since limewash has essentially no sheen at all. Bedheads, fireplace surrounds and hallway feature walls are the most requested interior applications, mostly because those are the walls people actually look at rather than just live in front of.
What's involved
Wall prep. Interior limewash needs a clean, sound surface. Existing paint usually needs a mineral primer coat first. Raw plaster or new render can often take limewash directly.
Colour testing on the actual wall. Specialists typically test swatches directly on your wall in your actual room light before committing to a full coat, since limewash colours read very differently on a sample chip than they do across a full wall under your lighting.
Application. Two to three thin coats, brushed on in a cross-hatch pattern that builds the tonal variation the finish is known for. A single feature wall is typically a one to two day job depending on size and drying time between coats.
Cost
Interior limewash runs from roughly $4 to $8 per square metre in material and preparation terms, with labour making up most of the job cost given the coat count and drying time involved. A single feature wall in an average living room typically lands in the $600 to $1,800 range depending on wall size, ceiling height, and whether a primer coat is needed first. You'll get an exact figure once someone's seen the wall in person.
A note on rooms with moisture
Limewash's breathability is a genuine advantage in bathrooms and kitchens, where trapped moisture behind a standard painted film is a common cause of mould and bubbling. It's not a tiled-shower-recess replacement, but for the surrounding walls in a wet area, it holds up well and actively helps rather than hinders moisture management.