# how to calculate the orientation of a house

Calculate the house orientation is one of the first steps to consider if we want your new house to be energy efficient.

Of course, it is not always possible to decide what the orientation of our house will be, and sometimes we encounter obstacles that we cannot control. However, calculate the house orientation is one of the aspects. We should pay attention to whenever possible.

Among other reasons, because the orientation of our home and its rooms will mean the entry of more or less natural light during certain hours, which will influence the heating of the building and, consequently, its energy demand.

But what happens if you have bought a house and you don’t know where its main facade is facing? No problem, in this post, besides knowing the advantages of one or another orientation, we will also give you the solution to how to calculate the orientation of a house.

## How to know the orientation of our house without using plans

Of course, if we have the plans of the house at hand, the orientation will be marked on them. But if we do not have them because we have lost them or because we have bought or rehabilitated it from a previous work, we have no way of knowing where it is facing.

Fortunately, today we have at our disposal the necessary tools to calculate the orientation of a house quickly and effectively.

Let’s see what they are:

The real estate cadastre is an administrative register in which real estate is included. We can go to it to find our property and check its orientation.

Each house has a reference so that, if we know it, we can go directly to check it. Otherwise, we can use the address and map to get our bearings.

In order to know the orientation of the house/flat, take as a reference that the upper part will correspond to the north. Sometimes you can even use a digital compass.

### Compass

Of course, the easiest way to find out the direction of our life is to use a compass. Look at the needle, which always points to magnetic north, to find out the orientation of the building’s facades.

It may be that none of the facades run parallel to a cardinal point. In this case, your home will be oriented in an intermediate way, such as northwest, southwest, etc.

Another option is to use an application such as Google Maps, which allows you to fix the map with respect to the north, so that by simply writing the address of your home, you can quickly check its orientation.

## Orienting housing and energy efficiency, aspects to be taken into account

As we saw in the introduction of this post, how to calculate the orientation of a house is important in relation to energy efficiency, because it will help us to know how many hours of sunshine we will have in depending on which rooms of our home and what our energy demand for air conditioning will be.

What does this mean? That air conditioning systems, or heating, depend, to a large extent, on the amount of light and heat provided by the sun on our facade and when it does so.

But, of course, orientation is not the only factor that will be decisive in the energy efficiency of a house. The quality of the envelope, avoiding leaks in windows and doors, waterproofing the floor, etc., are other factors to be taken into account and on which we can act.

Calculating properly what the orientation of your home should be will allow you to incorporate the hours of sunshine and heat into your perspective on energy expenditure, and thus enjoy a more efficient home.

If your home is oriented to the north, it will enjoy homogeneous lighting throughout the day, without receiving direct sunlight. This is the right orientation for warm climates.

If your home is in a cold area, the north orientation will have an impact on your heating costs, which will be higher.

In the coldest areas, the southern orientation is the most advisable. The light will fall directly on the main façade throughout most of the year. It will serve to save on heating and your home will be luminous, which will give a sensation of spaciousness.

On the other hand, if the area is warm, you will see an increase in the cost of air conditioning and, depending on the circumstances, you may have to install awnings to avoid direct sunlight.

An intermediate option, which also offers some sales, is the west orientation. In this case the main facade will be illuminated from noon to sunset.

It may be the most recommended option in cold climates, as it will make the winters more pleasant. On the other hand, the cost of heating and air conditioning may be higher than with another orientation.