The House with Three Pavilions is a sustainable house in Goa, designed and developed by GROUNDED.

The house explores the intimate relationship between the land, its people, water, and the biodiversity that exists in Goa in India. It is designed as a cluster of three pavilions that gently weave around existing trees in an attempt to coexist with nature and to minimize the impact of new construction on virgin land.  

The architecture of the house takes inspiration from the surrounding Goan village houses. Mostly constructed as ground-floor structures, each pavilion attempts to match the volumetrics of its village peers. Throughout, a simple sweeping roof form is used in red terracotta tile that is ubiquitous to the Goan village built-landscape. Proportions are borrowed from doors, windows, and plaster bands of vernacular Goan structures even as a distinct contemporary style is articulated in the design.

With a focus on connection with nature, the materials used in the house are kept subtle and natural. All floors are finished with a natural Indian ‘kota’ stone in a blue-green color that merges with the landscape. Pigmented cement and exposed local ‘laterite’ are used extensively to mirror the rustic countryside character. ‘Teak’ is used for doors and windows to add warmth and rich texture to the interiors. Antique wood columns and stone pedestals are also incorporated to bring a sense of luxury and timelessness throughout.  

The project also prioritises the enhancement of the site’s resources and biodiversity through a comprehensive water-management system which includes a natural seasonal pond connected to a newly planned system of bioswales. This on-site wetland feature harvests rainwater, recharges depleted underground aquifers, and offsets the load on the public drain system. Furthermore, it preserves the pre-existing site habitat. It is a win to see that insects, birds, and animals continue to find the site a safe space even as they come in close contact with the human life around, making this truly a space for all seasons and species.

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It is such a joy to see our project House with Three Pavilions find beautiful space in print and on the cover of Livingetc Magazine’s June 2022 issue. Aptly titled - ‘A Home with A Verandah’, the article draws attention to our countryside Goan house’s tangible connection to nature. It throws light on our tropical modern design approach and celebrates our efforts to create seamless indoor-outdoor spaces that allow our clients to take everyday life outdoors.

Read the published story here.

If you are considering buying a house in Goa, read our blogpost: What to Look For While Buying A House in Goa

To know more about our design process, take a look at: Designing A House in Goa

Sustainable building is not as complicated as it sounds. Here are 5 simple practices to adopt while building which offer lifelong benefits and returns:

01. Harvest rainwater for reuse or to restore groundwater. Even a system as simple as a collecting tank makes a difference.

We have a conversation covering the basics of rainwater harvesting. Watch it here.

02 Source and use materials and natural stones that are local to the place.

Read about optimal use of local materials in this article.

03 Preserve existing trees and use native species. Use flowering & fruiting trees & plants to retain the habitat and welcome biodiversity.

Find out more about natural landscaping here.

04 Maximise daylight and cross ventilation by creating openings on at least two sides of a space.

Find out how to connect to the outdoors in this blogpost.

05 Create pathways and hardscape with permeable paving to allow rainwater to reach the ground and replenish the water table.

Learn more about designing outdoor paving here.

Celebrating Navovado, our design-build vacation house in the Goan countryside through a gallery of photographs of the courtyard house. Earlier this year, Navovado won the prestigious Platinum Certification from the Indian Green Building Council. Navovado harvests all of its roof rainwater and recharges the water well on site. The use of low-flow water fixtures further improves water efficiency. Focus on use of insulation on the roof, double-glazed glass, low­energy use appliances, LED lighting and 100% hot water from Solar power makes this home extremely energy efficient. The structure is constructed using locally manufactured materials and materials with a high recycled content such as Laterite stone, Matti wood, Fly-ash brick and Slag cement. The garden is planted using native local species to reduce water use for ir­rigation. Finally, large openings allow for maximum daylighting and cross-ventilation, reducing the energy use for lighting and cooling.

The heart of the home lies in the large central courtyard that is an extension of the kitchen, living and dining space. The courtyard houses the swimming pool and provides a green private space to be enjoyed by all the residents of the house. The courtyard morphs in its use depending on the time of day and occasion. The guest bedrooms on the ground floor are designed as pavilions on either side of the courtyard, while the first-floor bedrooms have a large terrace overlooking the courtyard that connects the two levels.

Find Navovado featured in detail on our Instagram page here.

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In this IG Live session, we speak to Monish Siripurapu, Founder of Ant Studio in Delhi, India. Studio Ant works at the intersection of art, nature, and technology. Through their research and development wing Coolant they have made strides in building sustainable innovations through their all natural air cooling products. In this conversation, we discuss the science and method behind building this cooling system. We understand the system of Evaporative Cooling and the opportunities it presents in different contexts. We also speak about the process of research behind building this product and explore the nuances of parametric design. Tune in to watch our entire conversation.

I recently conducted an IG Live on taking A Site Positive Approach. As a follow up to that, I conducted another video session to get into details and answer pertinent questions about Rainwater Harvesting. I discuss the elements that make up a RWH system, compare the differences between rural and urban water management systems, and introduce some of the various options available for harvesting water. I also speak about the Goan monsoon patterns and the site specific methods that are useful in tropical areas. As an example, I explain the simple but effective well system created at Navovado, our completed vacation house in Goa. I also explore natural water systems such as ponds and bioswales which we have physically implemented at our project The House with Three Pavilions in Goa.

I was invited by Architecture + Design magazine to discuss Green Architecture, its nuances, realities and myths.

It is pertinent now more than ever to create buildings with minimal architectural intrusion and the conservation of natural resources. In this session, I speak about conscious architecture based in context and the little steps that we can take in our pursuit for ecological balance and sustainability.

To the jaded, the mention of green buildings implies a marketing gimmick, and to an idealist, it conjures images of buildings built with mud and bamboo with compostable toilets. Invoking a strong response either ways, we recently concluded a Q&A session on Green Buildings on Instagram. The session had over 300-people join over the course of a 30-minute session. 

The first question that we tackled was, ‘What is a Green Building’? My answer, ‘A green building is one where you’re trying to reduce the impact of the building on the environment.’ It is about making the right choices at every stage of the project, with the ultimate goal to minimise one’s footprint on the environment. To make a building green, the architect must treat the environment as a key design criteria from the first step of the design process right until the occupancy stage. 

It is our commitment to build sustainably and we green certify all our houses in Goa. Our first home, Nivim was the first green certified residence in Goa. It received a gold-level certification and our project Navovado has recently been awarded the platinum-level certification by the Indian Green Building Council. Platinum being the highest level available in the ranking system.

While a building can absolutely be green without a certificate, a green certification is a great way to stay accountable to oneself throughout the design and construction process. It provides the involved professionals with a detailed list of checks and balances with specifications and design criteria that need to be considered and incorporated at every stage of the design and construction process.

In India, TERI (home-grown) and IGBC (offshoot of USGBC) are the primary agencies that issue green certifications. Both these organisations use a credit based system for the evaluation of green building design and performance. The credits fall under the following categories: Site Planning, Water Efficiency, Energy Efficiency, Indoor Air Quality, and Materials among others. Throughout the process, extensive documentation with detailed calculations are required which is then reviewed and tested by the certification body on site. While the system is elaborate, it proves effective as a way to stay true to one’s goals of sustainability. However, it is important for architects to avoid incorporating design elements or features, just for the sake of securing points and focus instead on strategies that are feasible for that specific project life cycle and use.

Demystifying Green Building

I would like to cut through the clutter on this topic. Specially as I would like to demystify the concept and express that green building design is not necessarily a specialized science, nor is it forbiddingly technical where only certain qualified professionals can build green buildings. On the contrary, it is my strong belief that a building built with the basic principles of good architecture would do very well on the green scorecard. The process of green building design starts with a deep understanding of the site, local climate, wind patterns, local materials and resources. Once a building is sited to take advantage of the sun and wind to maximize daylight and cross ventilation, is designed to be responsive to the weather patterns and is built using local materials, then that in itself is a great start towards making the building green.

In the predominantly hot and humid climate in India, one can further think of reducing the heat gain through an informed design of the building envelope. This will have a tremendous impact on the thermal comfort within a building and hence reduce the energy use in the building. Water is another key natural resource that is dwindling with increased human activity on our planet. Rainwater harvesting provides a simple (sometimes ‘no-brainer’) solution to this problem. The idea is simple, instead of allowing rainwater to drain away from your site, one can design systems to either collect it and reuse on the site itself, or feed it back to the earth to recharge the underground aquifers. In addition, a simple introduction of dual flushes can reduce water use by 50-60% and aerators to taps, which can reduce the water use by upto 70% percent. Aerators mix the water from the taps with air, and as a result the water pressure feels the same even when the amount of water flowing through the taps are reduced.

When it comes to building materials, it is wise to use local materials. In most cases, the vernacular building techniques and the local labor would be well versed with the local material. The green quotient of buildings can be further increased by choosing materials with a higher recycled content, higher recyclability, reusing salvaged materials and materials that are rapidly renewable such as bamboo.

The choices to go green are not always straightforward. Cement for example presents a big conundrum in the building industry. The production of cement produces large quantities of CO2, a greenhouse gas with a lasting impact on global warming and climate change. In fact, the production of every kilogram of Portland cement produces an equal amount (one kilogram) of CO2. This presents a huge challenge for our industry where the widely accepted structural material is cement. Wood is another material that presents a difficult choice with sustainability. On one hand, it is a naturally renewable resource and is biodegradable, and wood can be used and reused multiple times. But at the same time, we are cutting irreplaceable virgin rainforests at an alarming pace with long lasting disastrous impact.

Finally, a green building doesn’t have to cost a lot more. Majority of green building strategies are common sense and based on sound architectural principles, which do not come with an additional cost. In addition, there are simple systems that are available at extremely reasonable prices. The aerators mentioned earlier are a free addition offered by most companies that sell sanitary fittings. The difference is for the architect, client and the vendor to be aware of these systems and integrate them into the building design in a timely manner. 

We must as a community of architects pledge to make green building design as important as aesthetics in our projects. A simple change in the thought process can have a long lasting impact on the quality of life for our future generations, which is a cause worth fighting for.

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How does one build in a rural location with the objective to have minimal or zero-impact on the environment?

This question is the primary driver behind the site planning strategy for The House with Three Pavilions located in Goa, India.

The project site is located on the edge of rice paddy fields with a dense cluster of local forest trees on one side and a coconut grove in the middle. The following diagram illustrates some of the critical measures taken as part of the site planning strategy.

WHY IS AN ECOLOGICAL RESPONSE ADOPTED?

• As Goa gentrifies, rampant new construction threatens to rock the delicate balance between nature and man. This project is our attempt to showcase that the built form can tread lightly on the land with conscious design and measured planning. 

• The design focus is to leave a minimal or zero-impact on the functioning natural ecological cycles at the site that pre-date the new construction. 

• The site is geographically located along the path of the watershed from surrounding higher elevations that finally drains into the Arabian Sea. The design planning is oriented to support and improve the water movement through a comprehensive water management plan.

• The water management plan is implemented to address three primary concerns around the site - to recharge the depleted underground water table, to increase water availability for the paddy fields bordering the site, and to reduce the water load on the Municipal Draining system.

WHAT HAS BEEN DONE?

• During the survey, a natural depression was found at the center of the site with a perennial wetland hosting diverse flora and fauna. This existing depression was dug out (until the underground water level in the driest month) and integrated with the existing well on the site. Today, this natural wetland feature is preserved and developed into a seasonal waterbody which also forms the focal point for the landscape created using a native planting strategy.

• All the roof rain water runoff is captured and along with the site surface runoff, it is directed into the central seasonal pond for rain water harvesting. The edges of the pond were formalized with mortar-less retaining walls built in local laterite rubble. This was done to reduce the erosion of the pond edges and to retain the water as a permanent feature in the landscape

• The pond was further connected to a newly planned system of bioswales that spread the collected runoff water over a larger site surface area increasing the rate and extent of percolation on the site. This keeps the level of our underground water table high throughout the year and the soil moist, reducing the garden irrigation requirement in the dry season.

• The bioswales use no cement in their construction and can absorb water through the walls and the base. The construction of the bioswales and the pond without cement, also allows for the water to remain clean without any toxicity of the cement leaching into the landscape.

HOW DOES THIS CREATE A POSITIVE IMPACT?

• The water management was a critical part of this project and offsets the load on the rudimentary public storm water systems found in the Goan villages especially during the heavy monsoons.

• As a result of our efforts, the underground water levels have been improved hence negating the impact of the house construction on the environment. We have been able to prevent any additional flooding at the neighboring fields or any other low-lying area in the village. 

• The project also prioritises the enhancement of the site’s resources and biodiversity. In doing so, it also creates a positive impact on its surroundings by protecting the agrarian viability which is constantly threatened by new construction and increased human activity. Our success can be measured by the number of birds, reptiles, butterflies and insects that can be found on the site today. We have uncovered peacock eggs, cuckoo eggs and baby parrots on our site. It is a win to see that the animals continue to find the site a safe space even as they come in close contact with the human life around, making this truly a space for all seasons and species.

(Water Management Plan in consultation with Pallavi Latkar and team at Grassroots Research Mumbai.)

Geoffrey Bawa is an unforgettable and continuous inspiration. With every project we embark on, we see our inspiration translate into our work - in design, in spatial character, in connection and reverence towards nature - finding new meaning in every site we build on. Finding Bawa is a gallery we have compiled as an ode to the master architect. As we reflect on our projects, it feels great to see many of our spaces carrying the sensibilities and sensitivites that Bawa inspired throughout his practice.

Geoffrey Bawa was one of the original proponents of Tropical Modernism, a design movement in which sensitivity for local context combines with the form-making principles of modernism. His architecture led to the formation of a new architectural identity and aesthetic, redefining what it meant to be modern, celebrating a close connection with one’s built and natural environments.

In 1960, Bawa was commissioned to design the house for artist Ena De Silva. Set in Colombo, the plot was very much enmeshed in the busy urban fabric with the activity and movement of any capital city.

Bawa’s first response was to turn the house in on itself and resurrect the courtyard. The house was conceived as a series of pavilions and verandas contained within a high surrounding boundary wall. A major central courtyard led forward to five smaller satellite courtyards. Light and air poured into every room, with notions of inside and outside blurred nearly beyond distinction.

Its spatial qualities were enhanced by the choice of materials: walls of plastered brick, roofs of half-round Portuguese tiles, columns of satin wood, windows of timber lattice, floors of rough granite- materials that were used in ancient Sri Lankan mansions, but brought together in the contemporary open plan format, assembled in an entirely different manner.

After nearly 40 years of living here, Ena was finally forced to sell the house owing to health concerns and mounting bills. Her land in central Colombo was immensely valuable and was quickly snapped up by an adjoining hospital. But the idea of demolition was met by public outcry that made Urban Development Authority insist that the house must be preserved in its entirety.

This is when the Bawa Trust proposed an unusual solution - to move the house in order to reconstruct it. A team of architects, archaeologists and development contractors came together, led by conservation specialist Nilan Cooray. Everything that could be salvaged from Ena de Silva’s home, including the doors and windows, was carefully collected, stored, and moved.

Unlike examples from Japan and Norway, where timber structures had been relocated successfully, Cooray had to work with masonry, some of which was falling apart. The house was stripped down to its bones - every pebble in the courtyard was numbered, every shape was traced, before he was done. They paid particular attention to replicating the structure’s orientation to the Sun, because that was essential to Bawa’s original palette of light and shadow. Working from the roof down, they dismantled the house, which was boxed up and loaded on to lorries to be carted off to a plot next door to Lunuganga, Bawa’s beautiful garden home.

The process took six years from start to finish, and the Ena De Silva house was finally assembled to completion in its new home in 2016.

Relying on black and white photos and surviving furniture, the Bawa Trust intends to return Ena’s house to a spitting image of how she had kept it, even replanting the garden with her choice of plants. It takes the spirit and act of conservation to uncharted territory, preserving Bawa’s legacy for generations to come.

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