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.

Design-led: selected work

Every project begins as a design problem, not a construction quote: restraint and material honesty over decoration, resolved in full BIM and built by the same studio that designs it, so the design reaches handover intact. Selected work includes Hotel Oasis in the historic centre of Oeiras, Hotel Umay, an 11,000 m² wellness hotel on the Melides coast and Villa Ninho d’Águia in Albufeira (2,000 m²).

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.