GB promotes the construction of buildings using the latest technologies in industrialized construction, always projecting their buildings according to passive construction standards. All the houses are certified with some of the international prestigious labels in sustainable construction such as LEED, BREEAM or PASSIVHAUS.


In general, we use light construction systems such as wood which allow us to industrialize the processes. All the structural elements are manufactured in a workshop, allowing us to reduce the execution time on site, implement extensive quality controls and obtain a final product of high energy efficiency. Among the advantages of our homes

we point out the reduction of energy demand by a minimum of 75% compared to conventional homes, high indoor air quality and excellent acoustic comfort due to the high hermeticity of the construction, the use of the most modern ventilation systems and heat and energy recovery ventilators and the quality of thermal and acoustic insulation.

We design and manage the project with BIM (Building Information Modeling) technology that allows us to combine all the information and all the agents involved in the same digital tool, minimizing errors in favor of a final product limited in costs, execution time and quality.

Our projects are drafted according to the most avant-garde and contemporary aesthetic trends resulting in attractive, quality homes, equipped with the latest technology “smart home” (control of installations from any mobile device), high energy-efficients and low environmental impact. Designed for the well-being of the people who inhabit them.

Whats is a Passive House like?

A passive house is a house that practically does not consume or recquire energy to be heated. This is not a concrete architectural design or specific materials but a way of building. In order to certify a house “Passive House” the following parameters must be met:

Heating Demand

≤ 15 Kwh/m2a

Demand for refrigeration

≤ 15 Kwh/m2a + 0’3 W/( m2aK)·DDH

Primary Energy Consumption

≤ 120 Kwh/m2a


≤ 0’6 renovaciones/hora @n50

Charging for heating

≤ 10 W/m2

Charging for cooling

≤ 10 W/m2

Passive houses are based on these basic principles:

High quality enclosures:

To guarantee the sealing values requested by the Passivhaus Institut and to avoid energy loss, the windows are triple-glazed with a chamber filled with argon gas.

Removal of thermal bridges:

The construction systems used minimize the conflict points where thermal leaks can occur that create thermal bridges.

High-level of airtightness:

A passive house has limited the maximum infiltrations of air to ≤ 0'6 renovations / hour. All the points that are susceptible to air leaks are protected with different technical solutions and materials.

Passive design:

We design projects considering the building compacity optimizing orientation in order to create openings in the facade that in winter works as a solar collectors. At the same time these openings are protected from direct sunlight in summer to favor a cooler environment inside the house.

Thermal insulation:

Insulation is the main factor affecting comfort and energy saving. In a passive house the insulation of the thermal envelope of the building is a determining factor.

Controlled mechanical ventilation with heat and energy recovery ventilators:

It would be of little use to build a house with this level of tightness and so well thermally insulated if we needed to open the windows to ventilate and, therefore, home loses the energy accumulated in the interior. We install controlled mechanical ventilation systems equipped with heat and energy recovery ventilators that allow recovering part of the energy from the air conditioning guaranteeing a constant renovation of low flow for 24 hours a day.

If you are interested in selling a path or a building or buying a passive home, contact us

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For all those clients who wish to live in a passive, sustainable and high energy-efficient house, and at the same time, designed completely according to their specifications, Growing Buildings is responsible for locating the plot, designing, constructing, legalizing and certifying the home so that the owner does not have to worry about anything.

Our clients benefit from strict deadline and execution costs and enjoy owning a Growing Buildings home.

All our homes are built according to passive construction standards approved by the Passivhaus Institut from Germany. We have teams of interior designers and decorators. We act all over the country.

If you are interested in receiving a proposal without commitment, please contact us

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Air rights

Thanks to the lightness and versatility of the industrialized systems that we use to construct, we can build houses on the roofs of the buildings, thus completing the vacant spaces that many buildings have.

Our houses weigh 1/3 less compared to a traditionally built house and the execution deadlines are reduced substantially which allows us to cause minimal discomfort to the neighbors and occupants of the building who do not have to leave their home nor cease the commercial activity, in case of shops on ground floor, at any time.

The use of BIM (Building Information Modeling) methodology and process industrialization gives us the possibility of adapting to any plant morphology on which to build.

In these actions we not only build houses above a property to be consolidated but also architecturally and energetically rehabilitate the common elements of the buildings, we remove the architectural barriers, install lifts and adapt the steps and accesses to accessibility regulations

Value proposal:
  • It improves the quality of life of the people through the improvement of the real estate building.
  • Creation of sustainable jobs in the construction sector over time by betting on new constructive technology.
  • It helps the environmental awareness of people by creating eco-efficient and environmentally friendly homes from the beginning of the process.
  • Reduction of aesthetic and urban impact by occupying empty spaces.
  • Improvements to the image and quality of the real estate park by rehabilitating the facades of old buildings.
  • Incorporation of new high energy-efficient and high-quality housing into real estate.
  • Improvements to the thermal conditions of the bordering dwellings due to the occupation of the new project.
  • Reduction of CO2 emissions in both construction (use of industrialized systems and recycled materials) and in the useful life of the building (energy efficiency).
  • Green roofs: Biodiversity source, rainwater retention, CO2 and environmental dust absorption, building temperature moderator.
Home Buyers
  • Possibility of living in a high energy-efficient house equipped with the latest “smart home” technology in areas where the supply of new housing is scarce and/or nonexistent.
  • Revaluation of the housing as it is an exclusive asset for its benefits and for its location and situation.
Owner communities
  • Architectural and energetic rehabilitation of the estate.
  • Economic income (air rights sale) and possibility of receiving subsidies.
  • Decrease in spent electricity and monthly payments by increasing the number of occupants.
  • Increasing the value of the property = Higher rental income (10-15%).
  • No one is bothered or have to leave during the construction process.


Elevation of 3 floors for the construction of 2 dwellings and 2 duplex with private terrace.

Rehabilitation of facade and common elements.

Installation of elevator and suppression of architectural barriers.


BEFORE         AND        AFTER

If you are a building owner or represent a Community of Owners and you are interested in studying the possibility of acquiring the air rights of your property, contact us

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Arquitectural and energy rehabilitation

99% of Spanish households suffer unnecessary energy loss due to poor thermal insulation. The main loss of this energy occurs in the facade and roof. That is why proper thermal insulation will be essential to achieve optimal levels of comfort and significant energy savings.
Although insulation is the main factor affecting comfort and energy saving, it is not the only one. HVAC systems are also responsible. Often in homes, there are situations of thermal discomfort. Most times the stratification of temperatures can occur within different rooms.
The quality of the air we breathe in our homes is also very important as it directly affects our health and well-being. The best way to improve the quality of the air is to install a heat and energy recovery ventilator that allows the recovery of some energy from the air conditioning in the interior of the houses through a system of controlled mechanical ventilation, this guarantees a constant renovation of the interior air for 24 hours a day. This, in turn, saves you money at the same time.
This ventilation system continuously extracts the stale air from the kitchens and bathrooms and introduces fresh air from the outside to the rest of the rooms (bedrooms, dining room, living room, …), acting as an outdoor air exchanger with the indoor air without mixing. This way, in winter, the energy released by the indoor air serves to heat incoming outside air causing less effort by the heating system to reach the set temperature resulting in greater energy savings. In summer, the system works in reverse: the internal air helps to cool the outside air entering the system.

The heat and energy recovery ventilator have filters that retain pollutants and considerably improve the quality of the air we breathe in our homes. These filters may be special for certain allergenic particles such as pollen or dust mites.

If you are interested in reducing the cost of your energy bill and increase the comfort and welfare of your home contact us and we will propose a budget and an energy report of the rehabilitation of your home to assess the convenience and return of your investment. If you wish, we can also include the rest of the remodeling jobs that you need (bathrooms, kitchen, bedrooms, distribution, installations, …) offering you our service of interior design and decoration. Remember that an energy-restored dwelling increases its value in the market by approximately 20%.

Example of building energy rehabilitation

The first thermography shows an uninsulated or poorly insulated building. The energy that radiates from the inside escapes through the facade and windows. The temperature of the facade is approximately 7 °.

The second thermography shows the same building once the rehabilitation works consist of the hyperinsulation of the facade and substitution of windows. In this case there is virtually no energy loss from the façade and windows. The temperature of the facade is approximately 4 °, very similar to the outside.



If you are interested in rehabilitating or remodeling your home or building feel free to

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“If you want to build a boat, do not start looking for wood, cutting boards or distributing the work. It evokes in men and women the longing for the free and wide sea. “