Spaces with presence. Designed with precision.

Creating refined architecture and interiors for private residences and distinctive commercial spaces internationally.

Shadow of a hand on textured fabric with stitching detail.

Material, context and craft

Material as a starting point

Every project begins with a close reading of place, light and material. These conditions shape an interior that feels specific to its setting and natural to inhabit.

Reference map of Italy with selected material samples.
Sample texture of wood
Wood
Brianza, Lombardy
Sample texture of leather
Leather
Vicenza, Veneto
Sample texture of glass
Glass
Murano, Veneto
Sample texture of marble
Marble
Carrara, Tuscany
Sample texture of metal
Metal
Perugia, Umbria
Sample texture of travertine
Travertine
Rome, Lazio

Detail-led by design

Joinery, finishes and bespoke elements are developed as part of the architecture, giving each space clarity, character and lasting quality.

Close-up of hands holding and assembling a curved wooden chair part

From concept to realisation

Design intent is carried through technical development, specialist coordination and construction supervision so the finished space retains the precision of the original idea.

Close-up of a person's face partially visible through narrow wooden slats in warm lighting

Work that speaks for us

From first sketch to final handover

1

Listen and define

We establish the brief, read the context and define the priorities that will guide every decision.

2

Design and develop

Concepts become spatial, material and technical proposals with the detail required to build them well.

3

Coordinate and deliver

Consultants, makers, suppliers and contractors are coordinated through one clear design direction.

4

Supervise and hand over

Construction, procurement and installation are supervised through completion, with quality protected at every stage.

A personal practice, international in outlook

As an architect, I have spent many years working across architecture, interior architecture, and interior design. Through roomseventeen, I create considered spaces shaped by context, material, and the people who inhabit them.

Based in Frankfurt and working internationally, I approach residential and commercial projects with the same attention to proportion, atmosphere and use.

From early concept through construction supervision and final handover, I remain closely involved so the original design intent is carried into every detail.

Ariane Mostert

Ariane Mostert, Architect and Founder

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