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Klantwerf is in preparation. Prices shown are proposals; availability and terms are confirmed in each quotation.

For businesses buying enquiriesWindow and glazing leads in the Netherlands

For window and glazing companies that want enquiries for replacement frames, insulating glazing or both.

Which enquiries you receive

The applicant wants to replace window frames, replace existing glass with insulating glazing, or both. The number of windows or the glazing area and the preferred timing have been discussed by phone. A material choice may be settled or still open.

Enquiries for replacement window frames, insulating glazing or both.

What we check by phone

We have spoken to the applicant about the project, timing and agreed criteria. Stated budgets and measurements remain estimates unless specified otherwise.

  • Owner or authorised decision-maker
  • Number of windows or glazing area
  • Material preference or advice need
  • Replacement or renovation identified
  • Project planned within 6 months

What the enquirer states

These details are the enquirer's own indications and are marked as such in the brief.

  • Number of windows or estimated glazing area
  • Current frame material, for example timber, uPVC or aluminium
  • Material preference or a wish for advice
  • Current glazing type, where known
  • Floor level and access to the windows

What you do not receive

  • Minor repairs such as a single pane or hinges and locks
  • Tenants without the owner's permission
  • Projects outside the agreed service area
  • General price questions without a defined project

Example enquiry brief

Example — fictional enquiry

uPVC windows in Leeuwarden

Service area
Leeuwarden
Checked
Project
Replacement frames and glazing
Checked
Number of windows
Approximately 8
Stated
Current material
Timber
Stated
Preference
uPVC
Stated
Budget
To be confirmed
To be confirmed
Timing
Within 6 months
Checked

Service area

You choose postcodes or municipalities. We confirm per region whether enquiries are feasible; without that confirmation we promise no volume or delivery time.

Exclusive, and what that means

Klantwerf supplies the same enquiry to one buyer. The applicant may independently contact other providers.

No. You receive a qualified enquiry. Your business handles the quotation, sale and delivery of the work.

Something wrong with an enquiry?

Report incorrect details, a duplicate or a mismatch with the agreed criteria within 7 calendar days. Valid claims receive a replacement or credit after review. Terms are agreed before you start.

Valid reasons

  • Incorrect or non-existent contact
  • No genuine enquiry
  • Outside the agreed service area or criteria
  • Duplicate Klantwerf enquiry for the same project and the same buyer within 90 days

Not a valid reason

  • The enquirer later changes their mind
  • No contract or sale results from the enquiry

Is the enquirer unreachable after delivery? Report it with a short description of your attempts; we review each case individually. As a guideline: three reasonable attempts over two working days, and never continuing after an objection.

A valid report leads to a replacement or a credit, as agreed in advance. Not both. Media bookings follow their own cancellation terms.

Frequently asked questions

Usually not. The number of windows or the glazing area is stated by the applicant. Measuring remains with you.

Launch sector

Insulation

Enquiries from homeowners for floor, roof or cavity wall insulation.

Checked by phone

  • Owner or authorised decision-maker
  • Insulation type and estimated area
  • Postcode and town

Proposed price€39per qualified enquiry, excluding VAT · On request

See criteria and example Request a proposal
On request

Roofing

Enquiries for planned roof renovation, replacement or substantial repairs.

Checked by phone

  • Owner or authorised decision-maker
  • Roof type and work identified
  • Estimated roof area

Proposed price€59per qualified enquiry, excluding VAT · On request

See criteria and example Request a proposal

Further reading

Request a proposal for Windows & glazing

We will check whether enquiries are feasible in your service area and send a proposal.