The geometry of Northbridge

At dusk on William Street, a temporary scaffold turns a blank side wall into a composition of coral, ochre, sky blue and charcoal. The muralist on the ladder is Mara Voss, whose geometric work has become part of the everyday view for commuters, diners and late-night wanderers in Perth’s Northbridge. From across the road, the pattern reads as a single, animated field. Up close, individual triangles, arcs and narrow bands resolve into a careful study of distance, movement and the city grid.

Northbridge is rarely a blank canvas, yet the spaces between its shopfronts, car parks and apartment blocks often go unnoticed. Voss works with those overlooked surfaces, using architectural drawing as a bridge between her studio practice and the public realm. Her murals do not simply decorate a wall; they give a corner a rhythm and make the shared city a little more legible.

Northbridge as a living canvas

Northbridge packs a great deal into a few square kilometres. Along William Street, late-night bars and restaurants sit beside the bright signs of Chinatown; behind them are older warehouses, newer apartment buildings and small courtyards combining brick, render and corrugated metal. The district is busy, loud and commercially changeable. A mural that looks permanent to someone on a tram can be gone when a tenancy changes or a facade is resurfaced.

For Voss, that instability is part of the appeal. She likes working near thresholds: beside doorways, around loading areas and along routes where people pass without intending to look at architecture. “A good wall gives the street another rhythm,” she says. “You notice it from a bus, then recognise it on foot.”

Her approach has brought colour to overlooked corners without turning the precinct into a single, over-designed artwork. Each mural responds to its setting, whether that means the proportions of a narrow alley or the busy sightlines of a restaurant frontage. The result is a collection of distinct interventions rather than a branded series imposed across the neighbourhood.

Drawing on Perth’s light

Perth’s clear, coastal light is central to how Voss reads colour. The same pigment can look warm in the morning, cool beneath afternoon sun and almost flat under a shop awning. She chooses shades that can hold their character across changing conditions: limestone and sand beside eucalyptus green, oxide red, chalk white and deep blue.

Before painting a large surface, she often makes small colour studies on nearby walls. These tests reveal how the light moves, which colours brighten and where neighbouring buildings cast long shadows. “Colour is never just the colour in the tin,” Voss says. “It is the colour in the street.”

That sensitivity gives her murals a distinctive balance between brightness and restraint. They stand out against rendered brick and grey concrete without feeling disconnected from them. Western Australia’s intense summer sun also makes durability a creative issue. Pigments must withstand ultraviolet exposure, while a carefully judged palette keeps a work from fading into visual noise as the months pass.

Building a visual language

Voss describes her practice as graphic design translated into architectural scale. She began by producing printed matter, exhibition graphics and wayfinding before taking on her first substantial walls. Screen printing, shopfront lettering and the measured grids of building plans continue to inform the work.

Her visual language combines triangles, offset circles, sloping lines and interlocking rectangles. Some patterns suggest a plan viewed from above; others evoke a road, a roofline or the horizon. Rather than copying a building literally, she borrows relationships between elements. A row of windows becomes a repeating band, while a service door might determine the scale of an adjoining shape.

At a distance, the composition needs to remain clear and energetic. Close up, brush marks, overlaps and slight variations reward attention. The geometry carries an idea without requiring a slogan, allowing the work to belong to a place while leaving space for individual interpretation.

This sits comfortably within public art, yet its relationship to street art is worth noticing. Voss’s murals are commissioned, collaborative and site-specific. Their graphic precision comes from design practice, while their visibility and direct encounter with daily life draw on the energy of the Northbridge street scene.

Turning a blank wall into a shared landmark

Most projects begin with a conversation between the artist, a property owner and the people who use the building. For Voss, that initial exchange is as important as the finished design. “People are usually good for a yarn about a blank wall,” she says. “They know who passes it, when the deliveries arrive and what the place needs.”

Those conversations quickly become practical. Permission to work, access for scaffolding, weather windows and agreed areas for paint all need attention. Heritage-sensitive buildings can require additional care, while busy footpaths mean traders, delivery drivers and residents must continue their routines. A mural cannot ignore the working life surrounding it.

The economics of inner Perth shape these decisions just as much as the architecture. Property redevelopment can remove the very surfaces artists hope to enliven, and short retail tenancies make long-term agreements uncertain. Voss adapts by proposing sites where a modest intervention can have a meaningful effect, rather than chasing the most photographed corner.

That pragmatism has earned her the trust of shopkeepers and residents. Some first question the disruption; others become the project’s most enthusiastic supporters. For Voss, the change in a street is as significant as the colour on the wall.

The craft behind large-scale work

A geometric mural depends on preparation that most viewers never see. Voss begins with photographs, site measurements and hand-drawn studies, then develops the composition at full scale. Straight lines need particular discipline because a small error becomes obvious across a large facade. On some projects, she transfers outlines using a projector; on others, she draws directly with chalk and brush.

The wall itself determines the method. Masonry may need cracks filled and a primer applied, while rendered surfaces require different preparation. Voss uses exterior-grade paint with UV-resistant pigments, followed by a sacrificial anti-graffiti coating where appropriate. None of these materials prevent every mark, but they give a public artwork a better chance of aging with dignity.

Access can shape the final image as much as the design. Working from a scaffold offers close contact with the surface, while a boom lift changes the viewing angle and can simplify difficult edges. Early starts help reduce disruption around cafés and bars. Voss also coordinates deliveries, parking and pedestrian routes with local operators rather than treating the footpath as an empty work site.

“The mural is meant to age, not remain new,” she says. That attitude informs both the materials and the patch repairs. A weathered edge or small repaired section can become part of the wall’s history.

Carrying the language beyond the street

Voss now works across murals, prints and modular graphics for interior spaces. The shift changes the questions she asks. A street wall must communicate from a distance, while an interior panel may reward a person standing close to it. Colours can be quieter indoors, and the pattern must respond to furniture, lighting and movement through a room.

University environments offer a particularly relevant context for this translation. New forms of student housing are reshaping how young people live, study and gather on Australian campuses, a shift examined in Curtin student housing. Voss has begun adapting her geometric language for shared spaces, using it to bring structure to corridors, common rooms and meeting areas.

Her aim is not to paste a street mural indoors. Instead, she translates the underlying proportions into wayfinding, screens and decorative panels. The same triangles that organise a Northbridge facade might become a subtle rhythm across a communal table.

Perth’s broader design community provides a useful network for these experiments. Architects, landscape architects, makers and owners recognise when a pattern can perform several jobs at once, establishing orientation while also giving an ordinary surface a memorable identity.

Keeping the walls changing

A finished mural is only the beginning of its life in public. Voss documents each project through photographs and keeps records of the colours used, making future repairs easier and preserving the history of work that may eventually be covered or removed. Short-term installations can become an unofficial archive of the neighbourhood as buildings and businesses change.

Her recent projects have encouraged people to look at familiar routes differently. A short walk through Northbridge can now reveal patterns beside railway lines, around the edges of Northbridge Market and behind restaurants whose frontages give little indication of what occupies their walls. The work rewards attention without requiring specialist knowledge.

For architects, designers and property owners, the next step is to meet the community shaping these projects. Contemporary’s Wine in Design program creates a place for Perth’s architecture and design network to exchange ideas and celebrate local work. Explore the program, meet the people behind the city’s walls and bring their experience to your next project.