Having general terms and conditions drafted for installation companies: costs and process

Having general terms and conditions drafted for installation companies by a specialized SME lawyer typically costs €300 to €900 for a custom set, with a turnaround time of about one to two weeks. You provide information about your work (central heating, plumbing, climate control), your clients, and your risks; the lawyer translates this into clauses regarding warranty, liability, completion, and payment that hold up legally. For installers facing water damage or climate control risks and commercial contracts, this quickly pays for itself: a single invalidated liability clause costs more than the entire set.

The short answer

• Costs: €300 – €900 for a custom set from an SME lawyer.
• Lead time: approximately 1 – 2 weeks.
• Process: intake, concept, feedback round, final set with user instructions.
• What you provide: type of work, customer groups (private/business), warranty and payment preferences.
• Alternative: free InstallQ industry terms and conditions, generic but not tailored.
• Payback period: preventing one dispute often covers the costs.

Having general terms and conditions drawn up for installation companies: what does it cost?

The price depends on the complexity of your business. Indication:

• Standard set (one customer group): €300 – €500. For an installer who works primarily with private or commercial clients with manageable risks.
• Comprehensive set (residential and business): €500 – €900. Two regimes or a consumer module, plus specific terms for maintenance contracts or breakdown service.
• Custom solutions for specific risks: from €900. For example, for major climate-related or Legionella risks, or combined with a standard order confirmation.

A law firm typically charges more (hourly rates from €200 – €350), without the result necessarily being better for an SME installer. For standard installation work, a specialized SME lawyer with a fixed price is often the better choice.

The process step by step

1. Intake: you describe your work (installation, maintenance, breakdown service), your customer groups, and where things regularly go wrong.
2. Concept: the lawyer drafts a set of warranty, liability, completion, and payment clauses tailored to your situation.
3. Feedback round: you read along, ask questions, and adjust warranty periods or payment terms.
4. Final set: you will receive the terms and conditions plus brief instructions on how to declare them applicable and provide them.

A good legal expert not only provides the text but also explains *how* to use it — it is precisely the act of handing it over that often goes wrong in practice.

What you provide yourself

The sharper your work, the better and faster the result. Consider:

• Your customer groups: exclusively private individuals, only business, or mixed.
• Type of work: new installations, replacement, maintenance contracts, 24-hour breakdown.
• Warranty requirements: what timeframe do you wish to set for installation, how do you handle the manufacturer's warranty on boilers and heat pumps.
• Payment arrangements: installments, advance payment for larger jobs, installment invoices.
• Your insurance: the coverage determines how you formulate the liability limit.
• Whether you are a member of Techniek Nederland or recognized via InstallQ.

Have them drawn up or use InstallQ terms and conditions?

The free InstallQ industry terms and conditions are a viable alternative. They are tailored to the installation industry, are recognizable to customers, and cost nothing. Disadvantage: they are generic. They do not always align with maintenance contracts, deviating warranty periods, or specific payment agreements, and you must ensure yourself that you correctly declare them applicable and provide them to the customer.

Having a contract drafted pays off as soon as you deviate from the standard: your own warranty periods, a mix of private and business use, higher damage risks, or a desire to limit liability more strictly. You then pay for clauses that are precisely tailored to your work — and that hold up when it matters.

Example. An installation company dealing with both residential bathrooms and commercial climate projects used generic industry terms and conditions for years. In the event of a climate failure resulting in business interruption, the liability provision proved too broad for consumer customers and too vague for business clients. A custom-drafted set with two regimes would have prevented that dispute.

When does it pay for itself?

Do the math simply. A custom-made set costs a few hundred euros as a one-off and lasts for years (with a periodic check). One serious dispute regarding water damage, a non-paying customer, or a voided warranty clause can easily cost thousands of euros in damages, lost revenue, or unpaid invoices. For installers with real risks of damage, the payback period is typically one prevented dispute.

Honest recommendation

Do you work exclusively for private clients on simple, standardized jobs, and can you manage with the free InstallQ industry terms and conditions that you dutifully send along? Then you do not need to have anything drawn up — save the money and, above all, ensure consistent delivery. Having them drawn up pays off as soon as you work commercially, offer maintenance contracts, deal with higher damage risks (water, climate, legionella), or wish to establish your own warranty and payment agreements. In that case, you will more than recoup the costs by avoiding just one dispute.

Start immediately or read on: general terms and conditions for installation companies, what are general terms and conditions for installation companies and drafting them yourself.

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