Introduction
The elemental estimate is just as important as the other reports because it provides an overview of the total works carried out and the approximate, if not the accurate costs of the work. As in our case where there was an initial preliminary estimation, the document may be used to cross check this initial data with the true cost. Furthermore, because the building has developed in a relatively suburban environment, it may be used in the future to make an approximation of development in such an environment.
 
Summary
Project detail
To begin with, the geology of the area, as described in the preliminary report, may prove costly because of the underlying soil as well as the general layout of the land. The use of machinery for the excavation as well as the initial site preparation may prove costly. The need for the water to be pumped out as well as the cut and fill procedures will prove to be very costly. Secondly is the wastewater treatment to be provided to the building. It had been proposed, in the preliminary report, a septic tank together with wetland treatment and this is cheap but maintenance of such a system may prove costly in the design stage as well as when in use. The use of municipal machinery for the removal of the waste might prove to be a pinch but this is a necessity depending on the number of children to be accommodated as well as the size of the septic tank and the design aspects of the wetland.
As with the power supply option, the client and the contractor can negotiate a way through which the power might be connected from the other side of the dual carriageway. However, this might prove costly and the other option may be the use of solar power for a while before other power options present themselves, particularly because of development of the region.However,this is somehow of a farfetched idea and may be considered if the municipality does not consider the terms of power supply to the building.
Part/element
Considering the huge tract of land occupied by the building, the most dominant elements was the slab designed for the ground floor. The slab is to cover a number of rooms particularly in the new building. Furthermore, the truss system to be used in the roof design may have proved costly and alternative truss systems might have been appropriate.
Foundations are important parts of building structures and as per the design and the soil conditions, the strip foundation was the most appropriate with the depths determined by the engineer as per the site preferences. The last aspect of the design are the finishes to the building and this has to be in line with children preferences.

element Quantity Price @quantity Amount(Euros)
Site clearance 5000 sq. Meters
15 euros/cubic meter
1125
 

150mm topsoil
Excavation of trenches and laying of foundation 3000 sq. meters of area to be occupied 59 euros per square meter 178029
walling 1380 blocks needed 1.7 euros /block 2300
Roofs 100trusses+1000 euros 70 euros/truss 8000
total 189454 euros

Estimation
 
Key dimensions
The key dimensions are those that are centered on the new building and the whole landscape. All these are important factors during the design life of the structure. In this, the total land area occupied by both buildings is ‪365.3832 square meters. However, large parts of the compound remain unbuilt and this may be useful for future developments.
Assumption sheet
There are a number of assumptions that might be useful for development. The first assumption is that the area will remain relatively suburban and as such, it is important to consider individual amenities such as waste treatment systems. The second assumption is that there is a potential for more development in the compound and as such, large areas of the compound are still not utilized.
Schedules

activity duration
Site preparation 1 to 4
Trench excavation 5 to 7
Foundation and ground floor slab 8 to 10
Formwork  for the whole building 11 to 12
First floor slab 13 to 17
Walling 18 to 21
Drainage 23 to 27
roofing 28 to 31
finishes 32 to 35
Electrical and mechanical installation 36 to 38
landscaping 39 to 41