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Eigenheim_20112 Jun 2020 11:15Hello,
we want to build a KfW 40 plus house with a prefab home provider that has not yet been decided. Some elements, such as the photovoltaic system including storage, the prefabricated basement, the garage, the staircase, and possibly a few other items will be outsourced because it simply makes more sense.
Now to the actual process (after purchasing the plot).
1. Should we look for an architect/energy consultant ourselves, or does the architect from the prefab home company take over this role even if the basement, photovoltaic system, etc. are ordered externally?
2. Should we find an expert to simply support us during the construction? For this, should we rather choose someone from a home builders’ association or someone like a "prefab home expert"?
3. Obtain quotes from the prefab home companies, the basement builders, the photovoltaic installer, etc. For this purpose, I have already created a checklist to ensure that not too many additional costs appear during selection but that everything is included in the initial offer (otherwise it would be hard to compare). Of course, we will carry out a preliminary selection to be absolutely sure. What is a sensible order here? For example: prefab home provider first, then basement builder, then photovoltaic company, then exterior work, then staircase builder?
4. Decision on the prefab home company and revision or extension of the contracts such as the scope of work through additional clauses and everything that is not fairly balanced.
5. Then price negotiation. Should professional help be sought here as well and, if so, who? Would that person also be involved during the process?
6. Signature and starting signal for construction. The architect should have the floor plans, etc. ready before that for the building permit / planning permission application.
It would be great to get lots of input here so we are better prepared! Many thanks in advance!
we want to build a KfW 40 plus house with a prefab home provider that has not yet been decided. Some elements, such as the photovoltaic system including storage, the prefabricated basement, the garage, the staircase, and possibly a few other items will be outsourced because it simply makes more sense.
Now to the actual process (after purchasing the plot).
1. Should we look for an architect/energy consultant ourselves, or does the architect from the prefab home company take over this role even if the basement, photovoltaic system, etc. are ordered externally?
2. Should we find an expert to simply support us during the construction? For this, should we rather choose someone from a home builders’ association or someone like a "prefab home expert"?
3. Obtain quotes from the prefab home companies, the basement builders, the photovoltaic installer, etc. For this purpose, I have already created a checklist to ensure that not too many additional costs appear during selection but that everything is included in the initial offer (otherwise it would be hard to compare). Of course, we will carry out a preliminary selection to be absolutely sure. What is a sensible order here? For example: prefab home provider first, then basement builder, then photovoltaic company, then exterior work, then staircase builder?
4. Decision on the prefab home company and revision or extension of the contracts such as the scope of work through additional clauses and everything that is not fairly balanced.
5. Then price negotiation. Should professional help be sought here as well and, if so, who? Would that person also be involved during the process?
6. Signature and starting signal for construction. The architect should have the floor plans, etc. ready before that for the building permit / planning permission application.
It would be great to get lots of input here so we are better prepared! Many thanks in advance!
Why choose a prefabricated house, why KfW 40+?
Overall, your post sounds more like a custom build project rather than a prefab house.
Eigenheim_2011 schrieb:And what exactly would that be? The major prefab house providers here will only credit you with ridiculously low amounts, which would never be sufficient on the open market.
because it simply makes more sense
Overall, your post sounds more like a custom build project rather than a prefab house.
Eigenheim_2011 schrieb:Only a few large prefab manufacturers are willing to do this.
Prefabricated basement [...] subcontracted externally
Eigenheim_2011 schrieb:Not all prefab house companies accommodate this either. Architectural services are usually provided only after signing the contract. The overlap with externally subcontracting the basement and having preliminary planning approval before contract signature, if it exists at all, is likely to be small and quite exclusive.
The architect should then already have the floor plans etc. ready beforehand
It sounds like you want to dictate your own rules to a prefabricated house manufacturer. They will likely reject that and wish you the best for your future plans.
What do you expect from a prefabricated house manufacturer?
An architect (preferably experienced with KfW40+ standards) and then individual contracting is more likely to match your expectations.
What do you expect from a prefabricated house manufacturer?
An architect (preferably experienced with KfW40+ standards) and then individual contracting is more likely to match your expectations.
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Eigenheim_20112 Jun 2020 12:48@MayrCh We want to save energy and also become more self-sufficient (which includes photovoltaic panels with battery storage). For me, this also means using ecological insulation (e.g., wood fiber). The keyword here is transmission heat loss. In the end, there is a repayment grant of €30,000 (about $32,000) and better financing terms through the subsidy. There are certainly more reasons supporting this.
Well, hardly any prefab house company builds the basement themselves; they usually hire external contractors and then add 10–20% on top. I only want to use certain services, and that’s what it comes down to. Simply a selection of services.
Since I don’t know what such a process might look like, I made the list. So if anyone has a more sensible approach, please give feedback.
@Lumpi_LE Of course, I only want certain services and not to pay 10–20% more for subcontractors. I hardly believe that’s the case since we’re talking about money—and quite a lot at that. Or have the companies reached full capacity?
Hmm, I expect that with a factory-built house, the construction will be done without the basement but including photovoltaic panels with storage and the garage (which we plan to build a bit later anyway). The rest can still be considered (for example, outsourcing the stairs, etc.). So I don’t think these are unreasonable wishes, or are they?
Actually, I am mainly concerned about the order of operations.
Well, hardly any prefab house company builds the basement themselves; they usually hire external contractors and then add 10–20% on top. I only want to use certain services, and that’s what it comes down to. Simply a selection of services.
Since I don’t know what such a process might look like, I made the list. So if anyone has a more sensible approach, please give feedback.
@Lumpi_LE Of course, I only want certain services and not to pay 10–20% more for subcontractors. I hardly believe that’s the case since we’re talking about money—and quite a lot at that. Or have the companies reached full capacity?
Hmm, I expect that with a factory-built house, the construction will be done without the basement but including photovoltaic panels with storage and the garage (which we plan to build a bit later anyway). The rest can still be considered (for example, outsourcing the stairs, etc.). So I don’t think these are unreasonable wishes, or are they?
Actually, I am mainly concerned about the order of operations.
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Eigenheim_20112 Jun 2020 13:12What I mean is that a basement ordered through a prefabricated house provider and subcontracted accordingly costs 10-20% more than a basement I would order directly from the basement builder. Since I want to save this 10-20%, I naturally specify certain points in the house construction plan. And I don’t believe the prefab house provider will just let us go simply because I order the basement externally. If it’s clear what I expect from this, then I don’t understand your question. Please explain again. Thanks!
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