Frequently asked questions

Frequently asked questions about inHAUS and premium prefabricated houses and modular homes

What is the difference between a prefabricated house and a traditional house?

Prefabricated and modular houses differ from traditional construction works in that almost the entire process is carried out off site. In the case of inHAUS, it takes place in an industrial plant where the entire process is monitored, from the design to the delivery, installation, finishing and handing over of keys.
Traditional building work is done on the site where the house will be located. This entails a lot of movement of materials, supplies and workers, with a high environmental and economic cost. It is as if a car manufacturer were to assemble a vehicle in the garage the car will be kept in.

In addition, inHAUS houses have a much higher construction quality than traditional and modular construction standards, both in Spain and in other European countries and the United States.

Are inHAUS modular homes prefabricated?

To a certain extent yes, but with some important differences. inHAUS houses may fall into the category of prefabricated houses, but our modular housing concept goes much further than that.

Casas inHAUS works with the concept of industrialised modular housing. This means that the house is completely manufactured in an industrial plant. This process follows strict industrial and quality control measures within the factory. In this way, work on the site is kept to a minimum and is limited to the installation day (usually between 4 and 8 hours, depending on the size) and the connections.

The concept of prefabricated housing, in reality, responds more to a 2D (two-dimensional) construction system, in which panels must be assembled on the ground. At inHAUS, we build houses in 3D (three-dimensional) modules, which reduces the work on the site to a minimum. As a result, significant savings in time and money are achieved.

When will my inHAUS house be ready to live in? How long does it take to build a prefabricated house?

The manufacturing process takes between 3 and 5 months, depending on the chosen model or the specific project. In other words, we guarantee a maximum of 5 months after obtaining the building permit, but in some cases, we can build the prefabricated house in less time.

Are the prices of the houses fixed or subject to change?

Casas inHAUS is based on a catalogue of more than 100 pre-designed house models. Whether choosing a pre-designed model or a 100% custom project, the design details and construction phases are carefully studied. In this way, and by combining the services of an architectural firm and a construction company, we can obtain the precise cost of each item. We can therefore guarantee a fixed price at the beginning of the process.

Is it possible to make design changes to modular or prefabricated houses?

Yes, of course. Once the feasibility of the project has been studied and the house that best suits your needs has been selected, upon request, it is possible to make any necessary modifications to ensure that your home is exactly as you need it.

We highly recommend starting from the wide and varied inHAUS catalogue (Collection 111), which contains many different alternatives to suit all preferences and needs. However, modifications can be made to any of our more than 100 modular home models. It is also possible to carry out completely customised projects.

What does a fixed turnkey price involve? What is a turnkey system?

Casas inHAUS offers a true turnkey system, from the draft project to the completion of the building work and the handing over of keys. At inHAUS, we offer a completely finished product; clients can sleep in their house as soon as they receive their keys. Other types of products, unlike inHAUS, deliver homes without fittings or only with electrical or air conditioning pre-installations.

In addition to our genuine turnkey system, inHAUS also guarantees that the price is fixed from the outset.

Are inHAUS prefabricated houses more environmentally friendly? Are inHAUS prefabricated houses more sustainable?

inHAUS modular homes are undoubtedly more sustainable compared to most traditionally built and even prefabricated houses. There are significant energy and water savings and a large reduction in construction waste in the manufacture of inHAUS houses. In addition, the optimal thermal (and acoustic) insulation of inHAUS prefabricated houses allows for significant energy savings even in the most extreme conditions. For this reason, the energy efficiency of our modular homes is superior to even the highest certifications of each country.

Furthermore, our R+D+i programme means that we are using more and more recycled materials and 86% of the materials in an inHAUS house are reusable.

Does Casas inHAUS sell land or building plots?

No, at the moment, Casas inHAUS only acts in an advisory capacity for our clients, which means that we can only advise our clients on the acquisition of land.

Our industrialised process provides the highest guarantees of quality and speed of construction. In addition, it allows us to guarantee a fixed price, as the process is completely controlled from start to finish.

Are inHAUS homes expandable?

Yes, all inHAUS modular homes are expandable. In fact, Casas inHAUS has already carried out several house extension projects.

Is a catalogue model more economic than a custom-built house?

A custom-built house or an alteration to a catalogue model may involve increased costs. For example, if it involves increasing the surface area of the house or adding different elements.

Can I see the quality of the materials?

Of course you can. We have a complete showroom at our inHAUS Lab, which is based in our architectural studio within our facilities. Here, you can view samples of all the materials available to our clients. In addition, we work with recognised, prestigious brands and an extensive network of establishments.

How are the materials and finishes of a prefabricated house chosen?

The complete inHAUS service includes a personalised study by the image and product team in collaboration with project management, with realistic graphic illustrations of the exterior and interior of the house, allowing the client to see what their own home will look like, right down to the smallest detail.

Can I see an inHAUS house before I purchase mine?

Of course. In fact, at Casas inHAUS, we recommend visiting our inHAUS Lab so that you can see and touch real homes in the production phase. You will be able to witness the different stages of the process, from houses in the structural phase to installations, finishes and cladding, the entire inHAUS manufacturing process all under one roof. These visits allow our clients to see the high quality of the materials used in our houses for themselves.

Where can I contract inHAUS services? Where does inHAUS operate?

We currently work both nationally and internationally from our headquarters in Valencia. Thanks to the industrialised construction system developed by Casas inHAUS, our houses can cross borders and are transported by road and/or sea with full guarantee.

Does inHAUS have other offices or branches?

Casas inHAUS currently operates from its headquarters in Valencia, where the entire project is developed, regardless of where the house is to be installed, be it in another part of Spain or Europe.

Is inHAUS a Spanish company?

Yes, inHAUS is a 100% Spanish company. Casas inHAUS SL was established from its origins as a 100% Valencian architecture studio. Today, we have a complete multidisciplinary and international team.

Does a prefabricated house need a licence? Does a prefabricated house require a building permit?

Yes, a prefabricated house needs a construction licence. Yes, it needs a building permit. In this respect, a prefabricated house is subject to the same procedures as a traditionally built house. inHAUS will take care of the permit application with the local council of the municipality in which the house is to be built. In other countries, we also take care of the administrative work with the relevant local authorities.

Can I build a prefabricated house on agricultural land?

You can build a prefabricated house on agricultural land provided that the local council grants a building permit for the construction of the house. However, this is not very common.

What is the durability of a prefabricated house? How long does a modular concrete house last?

The durability of a prefabricated house is similar to that of a traditional house, which is between 50 and 75 years, if there is no maintenance. Naturally, with proper maintenance and conservation works applied to the construction, this initial useful life of the house is significantly extended.

Which is cheaper, a prefabricated house or a traditional house?

In an exact comparison, with the same characteristics, a prefabricated house can be between 20 and 34% cheaper than a traditional building. In other words, if you used the same inHAUS steel and concrete structures and the same high quality finish, but completed all the work on site, the price would be higher.

What comes in a prefabricated house? What is included in an inHAUS prefabricated house?

An inHAUS prefabricated house includes everything that would not fall off if turned upside down. That is the entire steel and concrete structure; interior and exterior finishes, windows and doors (all carpentry); all electrical, telecommunications and security installations; all plumbing installations; and all bathroom fittings (mirrors, bathtub, spa, shower, WC, washbasins, etc.), kitchen and appliances (refrigerator, oven, etc.). Sometimes a washing machine and dryer are also included.

In addition to the house and everything inside it, the inHAUS service offers the option of adding a complete exterior landscaping project and execution of the garden and swimming pool, fencing, garage and more. These are optional elements and are not included in the prices listed in the inHAUS Collection 111 catalogue because they depend to a large extent on the characteristics of each specific project.

Can inHAUS take care of the demolition of a previous home?

Yes, at Casas inHAUS, we can take care of the entire process, including the management and controlled demolition of the previous dwelling on the plot where the house is to be built.

Can inHAUS handle the construction of a swimming pool, fencing or external gardens?

Yes, of course. Casas inHAUS offers exterior development projects as an optional service, which can include a swimming pool, fencing, landscaping study and garden. In the case of the swimming pool, this can include a prefabricated or even a concrete pool, although this is always as part of a comprehensive project for the construction of a modular home.

Do prefabricated houses include interior design?

Yes, absolutely. We offer an optional service called inHAUS Deco. A team of interior designers studies the project together with the client and provides everything they need, from the décor to the furnishing of the entire house.

Does Casas inHAUS provide financing for houses?

Casas inHAUS does not provide financing for houses. Financing is the responsibility of the financial institutions (banks) in Spain. Clients must take out a mortgage or a self-build loan. inHAUS can advise clients on this process as part of our comprehensive service.

What is a self-build loan? How does a self-build mortgage work in Spain?

Self-build loans are a product offered by financial institutions for constructing a house instead of buying one. The loan is taken out by a person constructing their own property. The self-build mortgage usually covers around 80% of the construction cost, depending on the bank. There are also other types of products, depending on the bank, specifically for the acquisition of land (with different conditions and rates).

The main difference with a self-build mortgage is that the bank provides the money in different phases or steps. There are basically three payments: at commencement of construction (approximately 50 % of the total cost), during the certification phase (Casas inHAUS architectural firm certifies the construction progress) and at the end of the construction phase, when the client receives between 10 % and 20 % of the loan.

How much does a building permit to build a house cost?

It depends on the municipality. In Spain, they usually vary between 3 % and 7 % of the total cost of the building work. At inHAUS, we have the experience of constructing more than one hundred finished house projects in many different Spanish municipalities. And now also in Europe.

Does inHAUS take care of obtaining the permits?

Yes, inHAUS takes care of all the administrative formalities relating to the construction project. Fees and taxes are to be paid by the customer and are not included in the catalogue price of the houses.

What type of building plot does a prefabricated house require?

As with traditional construction, the best building plot for a prefabricated house is flat land. However, another advantage of inHAUS prefabricated houses is that they are very well suited for difficult and sloping plots. The modular construction system makes it possible to bridge the drops on sloping terrain. Nevertheless, it is generally more expensive to prepare and perform the groundwork on a plot of land when the terrain is not flat. This is true for both industrialised and traditional projects.

Can inHAUS finish a project started with another architectural firm?

Yes, the EMOHA construction system designed by inHAUS allows for enormous flexibility. It is so versatile that it can be adapted to any design created by another architectural firm. In this case, our team of architects and engineers will carry out a detailed study in order to adapt the initial project to the highest quality inHAUS finishes and standards.

Can solar panels be installed on a prefabricated house?

Yes, of course. Casas inHAUS installs solar panels on its houses if the client wishes. In fact, it is a highly recommended option for improving sustainability and saving energy. In addition, inHAUS offers the possibility of installing photovoltaic panels that are fully integrated into the design and cannot be seen from the outside.

Can prefabricated houses be fitted with electric car charging points?

Absolutely, inHAUS modular homes can incorporate charging points for electric or hybrid cars. These charging points can be installed in an indoor or outdoor garage, covered or uncovered.

Is it possible to construct a prefabricated basement? Is it possible to build a modular garage?

Yes, at inHAUS, we can build both modular and traditional basements and garages. This option will depend to a large extent on the specific characteristics of the land and the housing project. We will be able to recommend the most suitable and/or cost-effective option for each case.

Is there an after-sales service for inHAUS prefabricated houses? Do modular homes come with a guarantee?

Yes, inHAUS houses comply with the guarantees established by the Law on Building Regulations in Spain. The law currently in force establishes a 10-year guarantee period for structural elements (foundations, supports, beams, slabs, among others). In addition, the guarantee covers damage to the building for three years caused by construction elements that affect habitability, such as fittings and electrical supplies. Finishing elements are covered for one year.

Can an inHAUS prefabricated house be attached to another house?

Yes, an inHAUS prefabricated house can be attached to another house.

Can semi-detached and/or terraced houses be built with the inHAUS system?

Yes, it is possible to build semi-detached and terraced housing developments with inHAUS, using our EMOHA construction system.

Does inHAUS work with developers?

Yes, inHAUS can work with professional developers in the development of urban and architectural projects.

Can I commission the construction of just the structure of a house?

At inHAUS, we design and execute complete house construction projects. Therefore, we do not offer the option of building only the structure of a house or just a swimming pool, garden or outdoor development.

Is it possible to finish an existing house with the inHAUS system?

We apply our construction system to integral projects only. It is neither possible nor advisable to finish a building with a different system.

How much does it cost to build a prefabricated house?

Casas inHAUS has a wide and varied catalogue (Collection 111), as well as multiple options and modifications. The choice of final finishes and materials, any changes made to the initial model and any extras included in the exterior development will all affect the total cost.

Can a prefabricated house have a pitched roof?

Definitely, inHAUS has different models of houses with pitched roofs, all in our modern style.

Can a house have a flat roof in an area with heavy snowfall?

inHAUS modular homes can incorporate flat roofs in areas with high snowfall without any problems. The resistance levels of inHAUS houses are well above the regulatory requirements in this respect.

Are prefabricated houses always square or can they be curved?

Modern inHAUS design includes the possibility of building houses with curved facades, including designs by Mario Ruiz, winner of the National Design Award, for the inHAUS By collection.