ᐅ Cost Estimation of a Prefabricated House

Created on: 26 Aug 2020 18:37
T
TangoDeltaLima
Hello everyone,

we would like to hear your opinions and feedback on our cost estimate.
Is this calculation realistic?

A few details in advance:
We live in the southern part of Baden-Württemberg. The potential plot of land is 746 sqm (8000 sq ft). The application has been submitted. The plot is fully serviced and is not on a slope.
Hoping that we will get the plot, we started to calculate what our single-family home can cost.
A financial confirmation for 500,000 € already exists.

Equipment preferences:



















































KfW 40 standard energy efficiency Foundation slab or basement will be contracted by us Shell construction, floor plan 140 sqm (with basement 130 sqm), rectangular, no bay windows
Gable roof with eaves Air-to-water heat pump with cooling function Underfloor heating
Ventilation system Photovoltaic system Gutters with drainage and cistern
Straight staircase without winders, no solid wood Electric exterior blinds with guide rails in gray Front door with fingerprint or code access (module separately installed next to door)
Doorbell with camera Interior doors (possibly sliding doors depending on floor plan) Gray uPVC triple-glazed windows
No skylights One sliding lift-and-slide door Knee wall height 230 cm (7 ft 7 in)
Tiling in all rooms Sanitary fixtures with wall tiles up to 130 cm (51 inches) Walk-in shower without glass door, 100x100 cm (39x39 inches)
Double washbasin with two faucets Rain shower No plastic bathtub (freestanding corner or oversized tub)
Room lighting (larger recessed ceiling spotlights) Smart home (controlled via smartphone) lighting, blinds, heating Electricity and water connections for outdoor area
Outdoor water tap


Rooms:





















Open kitchen-living-dining area ground floor Guest room (only if basement is included) ground floor Guest bathroom (including walk-in shower with glass panel) ground floor
Pantry (only with foundation slab) ground floor Entrance hall ground and upper floor Bedroom upper floor
Dressing room upper floor Master bathroom upper floor Study room upper floor
Exercise room without equipment upper floor Utility room (on foundation slab in ground floor, otherwise in basement)


Now to the cost estimate:















































































































Type of purchase
%
Plot of land
104,400.00
Notary fee
1.26
1,315.94
Land registry fees
0.70
731.08
Property transfer tax
5.00
5,222.00
Soil survey
0.50
1,365.00
Building contract review
0.90
2,457.00
Building application
0.50
1,365.00
Building permit / planning permission
0.70
1,911.00
Structural engineering inspection
1,000.00
Surveyor
2,500.00
Building consultant
200.00
Builder’s liability insurance
300.00
Construction performance insurance
0.40
1,092.00
Construction water
600.00
Construction electricity
800.00
Excavation and earth removal
11,000.00
Water, sewage, wastewater connections
9,000.00
Electricity connection
2,500.00
Telephone connection
799.95
Total excluding house
148,598.97


What remains:







€/sqm
sqm






































Budget
500,000.00
Total excluding house
148,598.97
Remaining budget for house
351,401.03
House budget
273,000.00
2,100.00
130
Basement or foundation slab
?
Absolute remaining budget for garage (single garage if basement, otherwise multi-car garage), kitchen, landscaping and possibly furniture
78,401.03


Does this seem reasonable and realistically calculated?

Furthermore, we have our first consultation appointment with FischerHaus GmbH coming up soon. We are not quite sure how to best prepare for it.
What is typically discussed during this first meeting?

One thing that causes us some anxiety is the salesperson asking about our budget. Of course, the salesperson needs some "room to maneuver," but I want to avoid them selling us a house below its actual value just because they know our budget.
K
knalltüte
9 Sep 2020 19:30
tomtom79 schrieb:

The windows are arranged randomly, right?

And I’m quite surprised that the utility room is allowed on the building boundary.

There are several stages between the Energy Saving Ordinance and Passive House standards, and just because a building complies with the Energy Saving Ordinance, it can still receive subsidies from BAFA—for heating, ventilation, energy consulting, etc.


The windows are deliberately arranged—or have we missed something?
Please keep in mind that you are seeing the entire building (2 semi-detached houses) and this is the northeast side. On the gable, you can see two entrance doors in the center (each semi-detached house contains two residential units).

Having the utility room on the boundary is not an issue as long as it does not contain any combustion equipment (oil, gas, pellets, etc.).

That’s correct, subsidies are also available for buildings meeting the Energy Saving Ordinance. However, the amount is significantly less than the full package from BAFA, KfW, Progress NRW, and others when the project is designed optimally with regard to funding.
K1300S9 Sep 2020 20:25
Where can you get a 6 x 9 m² (65 x 97 ft²) garage for about 16,000 EUR? I would order two of them right away.