Barrocas Homestead Main House Expansion and Pavilion/

Castanheira & Bastai


Project Details



Estremoz / Portugal



Year (Design/Construction):

2015 / 2017

Area (Net/Gross):

- / 298 m2
Operational Carbon emissions

Operational Carbon emissions (B6) kgCO2e/m2/y:

Embodied Carbon emissions

Embodied Carbon emissions (A1-A3) kgCO2e/m2:

  • The use of wood as one of the main building material reduces the environmental impact and carbon emissions of the building.
  • Part of the building is made of copper – a material that can be recycled many times without changing its properties.
  • The house takes advantage of natural light and ventilation with its large windows.

Project description as provided by the Architects:

One arrives along a straight line, in amongst holm cork trees that defy all rules of stability, extending their arms into impossible cantilevers.

This is a monte alentejano * and buildings emerge from this hill.

These are recent buildings, and all of them of them built by the owner.

The main building is in timber. Of so-called standard construction, which finds it somewhat difficult in adapting to the topography.

Happy with the experience of living in a wooden house, the now larger family, intend to enlarge the main living room and add a bedroom, so as to create the necessary conditions to live here permanently.

When one begins to alter what’s existing, little by little, it becomes evident that it is not enough to juxtapose or paste in new areas, new volumes.

It is necessary re-organize and make corrections.

It soon became clear that in order to be the respectful to the – well looked after by the owners –  existing fabric, would oblige that the addition of new volumes to the existing would have to be in a way that would allow for the existing to speak, as with the construction, because the house would continue to be in use during the building period.

Far from me to imagine, that, I would one day have to adapt my own architectonic language to an existent construction, of which I am not particularly respectful, but owning to its simple existence and value, I treated as if it were a monument.

Construction drawings were studied, measurements were checked, a topographic survey of the surrounding area was undertaken. All with millimetric precision.

The Main bedroom, stands out by a neck from the other bedroom’s volume, as it extends off the existing corridor.

It adapts its volume and roof to the levels of the existing. Integrating, but creating its own personality and contemporaneity, whilst valuing the existing.

It opens generously to the landscape, whilst creating privacy.

The main living room becomes an isolated covered veranda facing over the landscape towards the west.

It opens the house to the landscape.

This new volume, with its cooper roof and two wooden troughs, creates a new image on arrival, forcing a recreation in the sequence of access, opening up the space, allowing in people and the horizon.

It imposes on the existing, showing volume, space and materiality.

It is juxtaposed, carefully, but it turns out to be dominant or dominator of the whole.

It rises up absorbing the covered space for parking. It sets-out and bestows hierarchy to access whilst hiding technical areas.

The – almost Iush – vegetation is mixed and almost mystic. The almost excessive horizontality of the holm-oaks, contrasts with other more vertical, imported species, which are common in these eclectic gardens.

As it always has been.

The Pavilion is a fait-divers.

Being an Architect brings along this kind of thing. To find a client looking for something that’s not the usual.

What luck! Something that’s built with the passing of time.

It had to be isolated. Music with no restrictions. Books, lots of books. A room for to house a passion for model trains. A small gym.

I brought up this small volume at the highest point of the property.

It levitates, as if something strange was there about to land.  Or to take off? There, in the midst of scots pine.

A large space and two small ones, house the requirements of the brief.

Windows and terraces let in – selectively – the most amazing and never-the-same landscapes.

The smallest space becomes enormous, as it receives furniture, books, objects, sounds systems, machinery and… a surprising and passionate construction of model trains, with its own hills and mountains, stations and villages.

All that’s needed to enchant just about anyone.

It is a mixed type of construction with a language – or morphology- that’s intended to be different from that of the housing complex.

It is there, isolated, levitating and ready to go…dreaming

* monte alentejano: group of agricultural constructions  in Alentejo province, usually built on a gentle hill.

Architect: Carlos Castanheira

Office in Portugal: CC&CB – Architects, Lda.

Project Architect: João Figueiredo

Project Team: Sara Pinto, Fernanda Sá

Structure: HDP- Construction and Engineering Projects, Lda

Photography: Fernando Guerra FG+SG,  Fotografia de Arquitectura

Want to stay up to date?

Sign up to our mailing list to receive regular updates on the most exciting news, research, case studies, and events related to sustainable design.