Submitting is the process of asking some building firms about their price of a single task, where all firms fill in the same form. This way, the client gets offers following a unique scheme and therefor offers can be compared.

At the moment, no insuring company insures these risks. So it can't be guaranteed.

In fact, there is no RFC (Request for comments) of BIM. Mostly it is software firms, which try to push into the market what they hold BIM for. Having said that, it must be admitted, that there is no transparency, about building products industry, which may be trying to set standards in order to push their products. We prefer neutral description of construction and building materials over describing the product of a certain producer.

If the client opts for single firms, a lot more transparency is provided as when commissioning a firm which makes contracts with further firms to get the work done. Why is this? The supercontractor provides the client with a super price, as there is a big surplus for him comprised. The supercontractor sets a nice price for his subcontractors too, by making them believe, they can call themselves glad to know such a predator. In the end, the work is done by the sub of the sub of the sub. In order to get offerings which can be compared and are more down to the ground, it's better to use some single firms, which know what they're doing.

Specialists are planners having a deep knowledge in their matter. But all these eggheads need someone to coordinate their work, and what's even more, they need a design to follow. This person is the architect. Design and coordination are the matter of architects. They have enough knowledge of what the specialists are doing; they don't necessarily understand it in full depth.

• Site ground and underground, e.g. foundation, groundwater, seismic aspects,
• Construction in terms of statics
• Specialists for all mechanical aspects or
• Specialists for heating, ventilation, sanitary and electrics,
• etc.

Do they? In fact, they want to sell their stuff to you, and this way, you pay again for planning, but are forced to use 'this product' and not someone elses product. So, it isn't free.

Subsidies are always only a bit of money, mostly provided by the state or cities, sometimes also by nonprofit organisations. What they all have in common is, they want their customer to fulfill certain criteria or procedures. Normally they won't consider sufficient their customer claiming that all necessary has been done; they will want a lot of proofs. So these proofs cost a lot of money extra, which takes some room in the financial plan.

• Positive: You have more money to count with

• Negative: You always have to ask for the subsidies before you begin, sometimes even before you make a planning contract

• Negative: Find the correct authority to place your application. Otherwise, after some delay, you'll be announced, it was the wromg authority. But now it's too late.

• Negative: You spend extra money to prove the fulfillment of the conditions.

To sum up, it is not possible to make an account of what is left, in advance. It isn't even possible to do this without money.

Submission lists are lists of single tasks needed to build a house. For a certain amount of these tasks a price for one unit is provided and the product of the number of units. The description of the work to do is determined by the architect and the specialists. This way the customer gets a number of offers following a unique scheme. When all bidders have done their offer, the bids are scrutinized. If not all positions have been priced or the positional text was changed by the bidder, this offer is not comparable to others. When there are faults between single price und positional price, we will correct this. After some more checks, we will make an offers table and suggest you firms to do the work. Usually these firms will not be the cheapest, but such that already have done similar work in a satisfying manner. We do not give any garanties for the work of the construction firm.

Aftersales there is no competition left (they think). Mostly, they will argue, that their product is "as good as the one offered". So, if it's like this, why don't they do what they promised. They are simply trying to change, or should I say, undercut the contract. We can check these aftersales offers for you technically and computationally. Very often aftersales offers are provided with a mere possibility of savings. Mostly, there are no savings. This is because, there is cost adhered with changes. Every change in construction causes further changes in neighboring parts of the construction. So extra money needs to be spent and in the end there is no advantage left. Even changes themselves need time, not to forget changes in the building application, so the most probable effect of changes is an increase in cost, interest and time. Under some condition, quick action needs to be taken. This depends on the contract made with the building firm.
Existing buildings are different. Especially, when there are no reliable plans or static calculations are missing. We can do a bit of non-destructive survey on the building and therefor try to lower the cost. But as with new buildings, there is no garanty for the cost at all.

• explain wether a site may be used for construction, if it's outside a qualified building regulation for that area, which must regulate, which types of uses are allowed, in which density can be built, in which borders on site and where areas of streets are,
• formulate any juridical forewords in work catalogs.