Office Design & Build in Oeiras

WALLNUT designs and builds corporate offices across the Oeiras business parks — Lagoas Park, Taguspark, Quinta da Fonte and the Oeiras Valley — under a single contract built around your move-in date. From the day a lease is signed, the clock is money: one team handling space planning, engineering, licensing and construction is what makes the date.

Why Oeiras

Oeiras is the Lisbon metro’s main office cluster outside the city centre — Lagoas Park, Taguspark, Quinta da Fonte and the wider Oeiras Valley host the Portuguese operations of multinationals and a steady pipeline of corporate campuses and relocations. The work here is rarely a blank floor: it is fitting a real building to a real organisation, on a deadline. That is exactly where an integrated team earns its keep.

The lease clock

A traditional split — designer, then tender, then builder — adds weeks before anyone reaches site. A design-build contract overlaps design, procurement and construction, so a single accountable team drives toward the move-in date instead of handing the schedule across three companies. We run the whole fit-out in BIM, with clash detection on the dense mechanical and electrical services that decide whether an office opens on time.

What we deliver

Space planning and architecture; all engineering (HVAC, electrical, data, fire, acoustics); Cat A and Cat B fit-out; municipal and building licensing; construction; and FF&E coordination through to handover. Indicative fit-out budgets in Greater Lisbon run roughly €850–1,550/m² depending on Cat A vs Cat B and specification (market sources, 2024–25) — the feasibility review turns that range into your number.

Frequently asked

How long does an office fit-out take?
A typical Cat B fit-out runs roughly 8–14 weeks on site once design and licensing are settled; design-build shortens the path to site by overlapping stages. We scope the real calendar in the feasibility review.

What is the difference between Cat A and Cat B?
Cat A is the base building condition; Cat B is your company’s actual workspace — layout, finishes, meeting rooms, branding. We cover both. See our office fit-out guide for Portugal.

Do you work beyond Oeiras?
Yes — across Greater Lisbon. See our Lisbon practice.