How much is a house / EFH per m² - construction cost overview

• The five cost blocks on the house construction
  • Sample calculations
• Set screw 1: construction costs
  • lightweight
  • Solid construction with ETICS
  • Solid construction without ETICS
• Set screw 2: Domestic engineering
• Adjustment screw 3: Further factors
• Set screw 4: follow-up costs
• "Time bombs" in building a house
  • Rehabilitation costs of the road
  • Renovation costs of the facade
• Intelligent construction saves costs
• Do not overestimate your own performance

The dream of owning a home many. However, its implementation is in many cases a life task that can also fail dramatically. In most cases, too optimistic cost estimates are the cause of a failure. This overview of the costs should help those who have not yet decided definitively.

The five cost blocks on the house construction

The purchase of a house is essentially divided into five cost blocks. These are:

• Land costs
• building-costs
• development costs
• follow-up costs
• credit costs

The land costs are divided into:

• purchase price
• Brokerage fees (not uniformly regulated)
• Real estate transfer tax (3.5% in Germany)
• Notary fees (1.5%)
• possibly surveying costs
• possibly costs for the dismantling of existing buildings
• possibly costs for a pollutant remediation

The construction costs are:

• Cost of earthworks
• Building material and wages for raw and expansion
• Cost of the technical equipment
• Cost of garden design

Development costs are all connection costs to public networks:

• Connections to channel
• water supply
• electricity

Follow-up costs are the costs for the operation of a house:

• energy costs
• Costs for possible road rehabilitation
• Cost of renovations and repairs
• Insurance

Borrowing costs are the cost of financing a house:

• interest costs
• amortization costs

Sample calculations

The following house types are used as the basis for a rough cost estimate:

1. Detached house, 150 m² living space, pitched roof, two-storey, five rooms
2. Three-family house, 300 m² living space, pitched roof, three-storey, twelve rooms

Set screw 1: construction costs

Construction costs depend on the size, complexity and construction of the house. Basically, the bigger and simpler a house is built, the lower its cost per square meter. However, not every size can be combined with any type of construction. In addition, the design decides on the extent of personal contribution. Currently, there are three types of construction to choose from.

• lightweight
• Solid construction with thermal insulation composite system (ETICS)
• Solid construction without external thermal insulation system (ETICS)

lightweight

Lightweight design describes all quick-build variants that are created without stone and concrete. These are usually prefabricated kits in frame construction. The houses are prefabricated in factories and mounted on the construction site. A personal contribution is not provided for the construction of the house, but for its expansion. Houses in frame construction have already integrated the thermal insulation and the exterior plaster. The resulting thin walls make the house particularly space-efficient. Lightweight houses are limited in storey height. More than three floors are currently not possible with these houses.

Outside plaster, windows and above all the thermal insulation are already included in this price.

Construction costs single-family dwelling: approx. 135, 000 euro = approx. 900 euro per square meter

Construction costs Apartment building: approx. 240, 000 euros = approx. 800 euros per square meter

Solid construction with ETICS

Solid houses are all houses made stone by stone. These include the classic walls as well as the creation of prefabricated houses made of concrete or KSV elements. They are made in two steps. After erection of the shell, the installation of the thermal insulation composite system (ETICS) follows. There are different solutions for this. The cheapest is currently the sticking of polystyrene plates, which are then plastered.

Construction costs single-family dwelling: approx. 154, 000 euro = approx. 1100 euro per square meter

Construction costs Apartment building: approx. 280, 000 Euro = approx. 930 Euro per sqm

The ETICS is already included in these prices.

Solid houses with ETICS offer certain possibilities of own contribution. The system of concrete formwork stones is particularly suitable for this purpose. These are simply put together like building bricks and then filled with concrete.

Solid construction without ETICS

The only way to create an EnEV-compliant house in solid construction without additional ETICS is to build with cellular concrete or with thermal insulation bricks. These building materials combine static with thermal insulation properties and require sufficient wall thickness (36.5 cm) no additional thermal insulation. However, aerated concrete must always be carefully sealed because it is very sensitive to moisture. Thermal insulating tiles are less sensitive in this point.

Aerated concrete is particularly suitable for home improvement. The stones are light and easy to work with. On the other hand, thermal insulating bricks are bricked and should therefore always be processed by specialists.

Aerated concrete houses are sold as kit houses. Without the services of a construction company for the creation they are very cheap.

Material costs Single-family house (eg "YTONG innovation house 140"): 108, 000 Euro = 770 Euro / sqm

If you would like to have the house built by a company, another 70 euros / sqm of construction costs will be added. However, these square meter prices are based on the wall surface and not on the basic or living space of the house.

Building kits made of aerated concrete are currently not available as multi-family houses.

Set screw 2: Domestic engineering

A house must also be heated and supplied with water and electricity, if necessary with gas. For the heating of a house, there are many different approaches. Basically, efficient and intact thermal insulation is more effective and sustainable than a complex and expensive heating technology. Before a home builder wants to install a pellet stove with combined heat and power and solar thermal support, the facade, roof insulation and windows should be in order.

electric heating
The lowest initial costs have the electric heaters. Already for 3, 000 euros, the single-family house can be equipped with electric heating radiators from the example calculation. Well planned, even an electric underfloor heating is not much more expensive. This results in a price of 20 euros per square meter for the installation costs. However, attention must be paid to the following costs: With 28.4 cents per kWh, the electric heater is the most expensive of all types of heating.

gas heating
Gas heating offers a good compromise between low purchase price and very low operating costs.

• Purchase and installation in a family home: 6, 000-9, 000 euros = 40-60 euros per square meter
• Purchase and installation in an apartment building: 3, 500-5, 000 euros (per floor heating) = 10, 500-15, 000 euros = 35-50 euros per square meter

With only 7 cents per kWh, the gas heating is a very favorable form of heating.

pellet
Anyone who values ​​modern, sustainable and climate-neutral heating must expect the following costs:

• Pellet heating with solar thermal support
  • Purchase and installation in a detached house: approx. 17, 000 euros (pellet heating) + 4, 500 euros (solar thermal energy) = 21, 500 euros = 143 euros per square meter
  • Purchase and installation in an apartment building: approx. 25, 000 euros (pellet heating) + 9, 000 euros (solar thermal energy) = 34, 000 euros = 110 euros per square meter

The high investments are offset by very favorable operating costs of 5.2 cents / kWh for the pellet heating and 0 cents / kWh for the heat from solar thermal energy.

Adjustment screw 3: Further factors

The price per square meter of the house has many other factors that can have a price-driving effect. From the bathroom tile to the banister, from the front door to the garden greening there are very inexpensive to very expensive solutions. Therefore, blanket statements can hardly be made. Alone the bathroom can make in a middle equipment already 10, 000 euros. These of course are included in the total calculation of the square meter prices of the house.

For example, what is often forgotten or neglected is safety technology . Useful systems cost about 3, 500 euros for a detached house. For individual apartments, they are already available from 1, 500 euros. However, this only applies to electronic equipment such as cameras, motion detectors or alarm systems with glass breakage sensors. Active safety technology such as burglar-proof doors and windows are also very expensive.

Set screw 4: follow-up costs

Therefore, to get a more realistic estimate of the cost of a house, the current purchase price of the total package "house" is not a suitable basis. Especially the follow-up costs can dramatically increase a house in unexpected ways. A more realistic impression is the 10-year price . It includes all costs that can be incurred within a decade. What good is a cheap house building, if for the prices for heating are exorbitant high ">" time bombs "in house building

When building a house and also when buying a house, late costs may arise, which can seriously distress the homeowner. These are the renovation costs for the street and for the facade.

Rehabilitation costs of the road

The municipality, which is responsible for the operation of the roads, may transfer the repair costs. Part of the redevelopment costs of a road can be charged to the residents. Most communities do as well, but keep a sense of proportion. However, it is always possible that these refurbishment costs are tens of thousands of euros high.

There have also been cases in which homeowners have been charged for costs that have far exceeded the value of their home. These remedial measures often end in foreclosures of the neighboring houses. We can hardly defend ourselves against these levies, the case law is currently clear and there is no indication that anything is changing in this practice. All you can do is to look at the road and find out about it before buying the property or house. If you have a pothole strewn with potholes on the doorstep, you can safely assume that the road will be rehabilitated in the next few years. If you have a fresh, two-lane, with wide sidewalks, adequate lighting and bike paths provided street in front of the house, you can reasonably calm down thinking about a purchase.

Renovation costs of the facade

The cheapest insulation is currently still the foam board. These made of petroleum plastic plates are indeed highly effective. However, they are difficult to dispose of. Polystyrene plates must be disposed of as hazardous waste. They are only accepted absolutely clean by the incinerators. If they are soiled with glue or mortar, they must be taken to special landfills. The concrete shuttering stones and the insulating bricks will prove to be particularly problematic in this regard. In both building systems, the polystyrene is practically no longer separate from the masonry material. Dismantling or renovation of the facades will be very expensive.

In addition, the addition of flame retardants was severely restricted for environmental reasons. The cases of facade fires pile up. The legislature and the insurance industry will have to react to this in the future, so that high follow-up costs must also be expected here. Further information can be found in our article "Dispose of Styrofoam and Styrodur properly" .

Intelligent construction saves costs

There are many ways to save a lot of money when building a home. However, particularly favorable construction does not necessarily mean poor construction with high follow-up costs. An intelligent combination of basic considerations and selected construction methods and materials can help keep costs in check. The main considerations are:

• Prefabricated house or architect's house "> Do not overestimate own work

  Every construction job is carried out by professionals who have the knowledge and skills to do it quickly and correctly. Own contribution should therefore be included only to a limited extent. Even placing concrete shuttering bricks or walling with aerated concrete can result in disaster for complete laypersons. Decisive possibilities of self-service are:

  

  • Clamping slots for electrical and medical cables
  • Chiselling of core holes for switches and sockets
  • Baureinigung
  • Attaching cement plaster to the basement wall
  • Wallpapering and painting

  Especially the construction cleaning should not be underestimated. Five construction workers, who swing the broom thirty minutes before closing time, spend a full 2.5 man hours a day cleaning. At 30-60 Euro labor costs per hour, this is up to 150 Euro per day, which the builder spends for sweeping and wiping. Calculated on a three-month construction phase, the daily cleaning work adds up to ten thousand euros . So you should think about whether to let the craftsmen do their work until the last minute and then picks them up for brooming.

  Tips for quick readers

  • Prefabricated houses are today highly customizable
  • sufficiently wide aerated concrete does not need ETICS
  • Construction site cleaning in own contribution saves a lot of money
  • Consider security concept in planning and construction
  • to inform about costs for road rehabilitation!