Sampler with 5,000 properties
Drinking water testing for property managers, lab external. Small, recurring, no successor.
A legionella result above 100 CFU per 100 ml throws a property manager's month into disarray, and yours along with it.
We buy additional testing services with a statutory cycle. These include drinking water and legionella (TrinkwV), playgrounds and sports facilities (DIN EN 1176) and energy audits (EDL-G). We buy them as an extra unit of an inspection firm or on their own from €0.5m EBITDA.

Drinking water testing for property managers, lab external. Small, recurring, no successor.
Annual main inspection, quarterly checks. Your client base is gold, your team is two people.
Without suitable sampling valves, the sampler cannot take samples to standard. The plumber has to come first.
The result is above the technical action value. The operator then has to contact the public health office and commission a risk analysis.
In spring, every municipality wants its annual main inspection under DIN EN 1176-7 at the same time.
The client gets in touch shortly before the deadline. After that, the online declaration to BAFA is still waiting.

We look at the numbers you use to run your business yourself. The right column shows our acquisition criterion.
| Metric | What it tells us | Our benchmark |
|---|---|---|
| Share of recurring orders | How reliably your revenue comes from cycles. | The higher the recurring share, the better. |
| Properties in legionella testing under TrinkwV | How large your predictable sampling base is. | We look at the development over three years. |
| Partner lab and sample transport | Whether samples are analyzed on time and safely. | We expect a fixed partner lab. |
| Playgrounds under contract | How strongly municipal clients are tied to you. | Good with multi-year contracts. |
| Energy audits with repeat orders | Whether clients come back to you after four years. | We look at repeat orders. |
We automate the desk work. Professional decisions and customer contact stay with your people.
This is GTP's assessment. We show it upfront so you can see what we will work with after the acquisition.
A planner sets sampling routes by deadline, property address and the property manager's access times.
Lab values go into the limit check, and the system generates the report and the notification to the public health office.
Image models detect wear and entrapment points in equipment photos and classify defects under DIN EN 1176.
Sampling, main inspections and energy audits require qualified people on site, and labs need their own accreditation.
You meet your test deadlines reliably, even if your team is only two people.
Sources Drinking Water Ordinance 2023, legionella testing obligations (2023) · Energy audit under the EDL-G, mandatory for non-SMEs in a four-year cycle (2025)
After the first call and the non-disclosure agreement, these five documents are enough for a solid offer.
| Size class | EBITDA multiple |
|---|---|
| Micro-cap, revenue below €5m The relevant class for most succession cases in this segment | 3.5x to 5.5x |
| Small-cap, revenue €5m to €50m | 5.0x to 7.0x |
Category business services (B2B). Source: DUB KMU-Multiples Q2/2026. The DUB figures show asking prices and price expectations on a business marketplace. They do not include completed transactions. The range comes from an independent third party and is not an offer from GTP.
The multiple gives the enterprise value. What reaches your account depends on four items:
If one of these points applies, the value drops:
We calculate your value in the first call using your numbers. We go through the four items openly with you, even if the result is below your expectations.
All market data and the regulatory timeline for testing and experts
As an extra unit of an inspection firm, yes. On their own from €0.5m EBITDA.
No. An accredited partner lab under contract is enough.
Deadline tracking per property, inspection reports, client portal.
Response usually within 72 h, indicative offer in 2 to 4 weeks.
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Your clients trust inspectors with a name and recognition. That is why we only buy if the team stays and the next generation already works in the business.
We first look at who will sign in five years. If that is only the owner, we tell you before any price discussion.
Acquisition profile, teaser metrics and our commitments for all 24 segments are on a separate page. We only approach your client through you.
A 30-minute call is enough to know whether we fit. Afterwards you get a written assessment with reasons.
Request a confidential first call
Or call us: +49 40 89741812