Is house planning with multiple providers necessary?

The contractors are all more or less diligent in preparing the proposals, offers, and calculations. [...] Those who did not get the contract are certainly not happy that the purchase is made elsewhere. Can they send an invoice for the consultations or drafts? Do contractors expect that multiple offers and drafts will be obtained, or am I mistaken in doing so? Are planners used to the fact that they only sell three houses out of ten offers, or is the success rate even lower in the end? With such a big investment, one does not want to accept just any offer without having comparisons.

Oh dear, I just realized that you have already opened a new (fifth?) thread about the same construction project again (and I don’t have time right now to link the collection). This post of yours could almost be called self-answering – basically, you only need to read it from the perspective of the "other side": with such a big investment (in expensive, competent offer calculators), they don’t even respond to inquiries from some unknown person who is mistaken in so far as the bidder cannot read even the most rudimentary information about the probability of the contract from it. Accordingly, the supplier would have to write a hundred offers for three sold houses because many people only inquire for fun. That means there are people involved without the necessary money and/or who don’t want an offer at all but only a comparison offer (the difference is about as big as between a friend and a party friend). That is why good providers no longer respond to such cold inquiries (possibly to ten competitors). The inquirers learn nothing from this, but they "learn" from it: namely to broadcast twenty instead of ten inquiries. And so the regulars’ spiral of "learned" foolishness from their own ineptitude continues. By 2030, we will be at a point where the reputable providers still on the market will only answer inquiries from existing and recommended customers or from consultants like me (who will be regarded as a kind of trustees for pre-checked honest interest and assets). Especially in times of a weakening construction market, a company threatened with insolvency can take a further step ;-) and develop offers for unknown cold inquirers. "Drafts" can, under uncertain conditions, at best come out of the drawer. There are literally shiploads of people in your situation whose development plan would certainly allow a two-family house. But there are also an unbelievable number of crazies dreaming of a house that pays for itself through a second dwelling unit (and partly already building their financing with zero remaining capital only after the land purchase). Such people mostly cause an expert earning six grand plus a company car and other capital-forming salary additions to work overtime, mostly those who need it or who are not the kind of business friends you should seek. So if you are not the nuisance described above, but the Ralf who went to school with the builder’s hunting brother Bernd and lived next to his cousin Frank, then matters look very different. Then he can classify your inquiry and knows that you are not asking about a shell construction out of stinginess due to creditworthiness and hopes in the practical skills of a Polish brother-in-law. There are worlds of difference, but oh wow. One of the inexperienced salesmen will always turn up. But if, as a serious and solvent inquirer, you do not want to steal time from others or yourself, you get offers in a professional way (delegated if you like). There are people like me (and some competitors) for this or also colleagues bound to building authorities but otherwise free of providers* and – my old story – quite classically architects (who – another one of my old stories – are worth their money also because they don’t earn it just as original floor plan commissioners). Efficiency "costs" nothing! In this sense: Fees for independent consultants are an investment with good performance. However, it does not hurt to wait for the turn of the year; we are already in the Christmas business – keep this in mind regarding (im)patience with answers to your already sent inquiries. *) I mentioned several of them just the day before yesterday in

The inquiry originals learn nothing from it, but they "learn": namely to broadcast twenty instead of ten inquiries. And so the regulars' spiral of "learned" mistakes keeps turning ever further. By 2030, we will have reached the point that the reputable providers still on the market will only answer inquiries originating from existing and referral customers or from advisors like me (then regarded as a kind of trustees for pre-checked honest interest and assets).

Of course, it must say: "The inquiry originals learn nothing from it" and "By 2030, we will have reached the point that the reputable providers still on the market will only answer inquiries originating from existing and referral customers or from advisors like me (then regarded as a kind of trustees for pre-checked honest interest and assets)."