ᐅ House Construction – Hiring a General Contractor but Providing Your Own Materials

Hello everyone,
my wife and I are planning to build our single-family house in the near future.
Before I get to my dilemma, I want to share a bit about myself.
I have been working for six years in a building materials wholesale company, primarily supplying roofers and carpenters.
Over the years, this has given me some technical knowledge—mainly theoretical.
In practice, of course, my experience is quite limited.

Now, since my company supplies both civil engineering and building construction materials, I can get these materials significantly cheaper.
However, I don’t feel confident enough to handle the installation myself, and I am also a bit hesitant to hire individual contractors, as there are many negative experiences reported online.
Whether it’s delays caused by preceding trades, defects that are hard for a layperson to spot afterward, or simply the challenging coordination between different trades.

In theory, I would like to hire a general contractor, but I wonder if a GC would agree to me supplying most of the materials while they only earn from the labor?
I admit I haven’t contacted a general contractor yet but plan to do so soon—I’d just like to hear your opinions and if you perhaps have any ideas on this!

Thanks in advance.

I would neither, as a general contractor nor as a trades contractor, have my workers use unfamiliar materials. Reasons:
1. Less routine → takes longer → higher costs
2. Less routine → higher risk of errors → greater warranty liability
3. No profit margin on the building material → lower overall profit
4. Lower purchase volume with the regular supplier → risk of missing sales targets / purchase agreements / bonuses → lost incentives / discounts

hampshire schrieb:

I wouldn’t allow my team, whether as a general contractor or a trades subcontractor, to work with unfamiliar materials. Reasons:
1. Less experience with the material → takes longer → higher costs
2. Less experience with the material → higher risk of errors → increased warranty liability
3. No margin on the building material → lower profit
4. Lower purchase volume with the regular supplier → risk of missing sales targets / purchasing agreements / bonuses → lost premiums / discounts

In addition to the reasons above, as an employee in wholesale, you should know the answer, right? The idea is understandable, but since you are so close to the subject, I’m surprised you’re asking this question. The subcontractors of the general contractor are really no different from trades awarded individually when it comes to actual work performance. They’re still just trades, after all. Both buy from your company for reasons you know well, not from retailers like OBI or Hornbach!

I would factor in the reasons or risks mentioned by @hampshire. Savings: none.

What could work for us is going to the local draftsperson (they create the plans and oversee the construction, and know the local companies). With them, you can approach your clients and negotiate.
Points 1 and 2 are not applicable, point 4 applies if your client agrees.

I will go one step further. If a general contractor (GC) takes on the project, what about the warranty? That’s bound to cause disputes. I would always argue in favor of material defects when dealing with a GC.

A friend is doing exactly that right now. His girlfriend works in the interior trade and gets materials at a significantly lower price. They order everything themselves, and the contractors handle the installation.

My neighbor works for the same company and has done the same.

Both have built or are currently building with regional companies on a direct-contract basis.

So it definitely works, but probably only with direct contracts to local companies.