Construction and real estate prospecting
The 90 days after permit grant decide the project. Most sellers arrive on day 91.
Construction procurement is decided in the gap between omgevingsvergunning and tender. Spec writers shortlist contractors and suppliers in those 90 days. This guide covers Omgevingsloket, BAG, TenderNed, Wkb dossiers and BREEAM-NL targets - which to read, which roles own the spec, and how to arrive before the tender is drafted around someone else.
You probably came here because
- An omgevingsvergunning was granted last week to a developer in your region. You'll see it in Cobouw next month, by which time the steel and facade contractors have been picked.
- TenderNed shows the tender. The 30-day clock is already running. Specs were written around a supplier you've never spoken to.
- You sell to specialist subcontractors: facade, MEP, gevelbouw, prefab concrete. The names rotate per project, and your CRM is two years out of date.
- A new BREEAM-NL Outstanding target appears in a developer announcement. By the time you call, the consultants are already on the brief.
If any of that lands, the rest of this page is for you.
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Pick ten developers, contractors, or sites.
Send us ten construction targets. We return ten outreach packages tied to a real permit, tender, or BREEAM-NL filing - in your rep's voice, with public sources cited. No card. Twenty minutes of feedback after.
Try for freeHow construction projects buy
Four signals that open a construction buying window.
Construction is one of the most public sectors there is. Every meaningful project leaves a trail in Omgevingsloket, BAG, TenderNed, and the BREEAM-NL register before any work starts. The signals are timestamped. Most CRM data is months behind them.
Omgevingsvergunning and BAG registry mutations.
Since 1 January 2024, the Omgevingswet folded the old building permit into a single omgevingsvergunning, filed via Omgevingsloket. Each granted permit is followed by a BAG registry mutation, usually within weeks. That pairing is your earliest credible procurement signal: ground works in 60-90 days, structural in 90-180, MEP and finishing in 6-12 months. Reading Omgevingsloket plus BAG plus the gemeentelijk bestemmingsplan tells you which buildings are real and what stage they're at, well before a tender exists.
TenderNed publications and the 30-90 day buying window.
European-threshold tenders (>€5.5M for works) hit TenderNed and Aanbestedingskalender on a known schedule. The window between publication and award is typically 30 to 90 days. The first 30 days after publication is when serious specification questions get asked, and that is when relationships outside the formal Q&A still matter. If you're a niche contractor or supplier and you arrive on day 31 with no prior contact, you're submitting blind. Tracking publication dates by buyer (RVB, ProRail, gemeentes, woningcorporaties) and pairing them with named contacts is half the work.
Wkb dossier filings and Gevolgklasse expansions.
Wkb (Wet kwaliteitsborging voor het bouwen) came into force on 1 January 2024 for Gevolgklasse 1 and is being expanded in phases. Every Wkb dossier requires a kwaliteitsborger, structural calculations to the right NEN-EN standard, and digital handover. New dossiers in Omgevingsloket flag both an active project and a buyer for QA software, monitoring kit, NEN-EN 1090 compliant components, and KOMO-certified products. The category and the gevolgklasse alone often pre-qualify the project for your offer.
BREEAM-NL, MPG and BENG-driven specification events.
MPG (MilieuPrestatieGebouwen) tightened to <0.8 in 2025. BENG has been the floor since 2021. A new BREEAM-NL Excellent or Outstanding target on a developer's project page is a procurement event for low-carbon concrete, biobased insulation, energy-positive MEP, monitoring sensors, and the consultants who write the credits. RVO MIA/VAMIL register entries flag who is using which qualifying technologies. Tracking these announcements via NRP, ISSO BNB, and developer ESG reports gets you to the spec writer 6-9 months before the tender.
Public sources we monitor for construction
- Omgevingsloket - omgevingsvergunning applications and grants under the Omgevingswet.
- BAG (Basisregistratie Adressen en Gebouwen) - building status mutations.
- TenderNed and Aanbestedingskalender - public tender publications and awards.
- RVO MIA/VAMIL register, BREEAM-NL, GPR Gebouw, ISSO BNB - sustainability and certification entries.
- KOMO and NEN-EN 1090 attestations - product and fabricator certifications.
- UK Planning Portal, Land Registry, Construction Online - cross-border developer activity.
Decision framework
When this approach works, and when it doesn't.
Works well when
- You sell to specialist subs, installateurs, gevelbouwers, prefab, MEP, fire safety.
- Your ICP is 10-50 FTE regional developers, mid-market contractors, or specialist consultancies.
- Your offer maps to a permit type, NEN standard, or BREEAM-NL credit.
- You can mobilise within 90 days of a permit grant.
Works poorly when
- Your customers are tier-1 EPCs (BAM, Heijmans, VolkerWessels) on framework agreements.
- You sell only to government infrastructure with central RVB/ProRail buying.
- Your win comes from on-site presence and no remote pitch lands.
- Your unit price is so low only volume distributors can carry it.
Honest take
For mega-projects above €100M, this is not the right tool. Tier-1 EPC contracting is a long-relationship game where the entry point is a partner introduction or a supplier day, not a cold message. If that's your only segment, hire a senior BD with a contact book and a few partner agreements before you spend on tooling. We'd rather lose a sale than waste your quarter.
Where Hooklyne fits
For sellers who want to be in the spec, not in the tender response.
The right contact for a regional developer's next BENG-compliant project is the project director or the lead architect, and neither is on LinkedIn most of the time. They are in BAG records, in Omgevingsloket dossiers, and in NRP membership lists. Hooklyne pulls from registry data, sector directories, and verified European data partners to find the named operations or development contact for each company, not a generic mailbox.
The 90-day window after permit grant is the most expensive 90 days in construction sales. Spec writing happens then. A subcontractor or supplier known to the developer or main contractor in those 90 days is on the shortlist. One who shows up at TenderNed publication is competing on price. Hooklyne scores prospects against permit dates, tender pipelines, BREEAM-NL targets, and Wkb dossier filings, and surfaces the ones currently in the writing window.
The first message references the omgevingsvergunning number, the BREEAM-NL target, the tender slot, or the Wkb dossier - written in your rep's voice and with the source linked. A development director who reads "saw the omgevingsvergunning for project X granted in March, you're in spec writing for facade now" reads to the end. One who reads "we help construction companies grow" doesn't.
Simple pricing.
Simple credit system. Every action priced transparently. Switch plans or cancel anytime.
Start
Solo rep. Test and validate your outbound. Self-serve.
Growth
1-2 reps. Full pipeline. Setup call included.
Scale
Small sales team. Volume outbound. Up to 5 reps.
FAQ
Construction prospecting questions, answered.
How long does a tender process take in Dutch construction, and where is the buying window?
From omgevingsvergunning to tender publication is typically 3-9 months for mid-market projects. From publication to award is 30-90 days for European-threshold work, less for sub-threshold. The real buying window is the 90 days after permit grant: that is when the developer or general contractor is shortlisting subcontractors and writing specifications. Arriving during the formal tender is mostly competing on price.
What is the difference between omgevingsvergunning and bouwvergunning under the Omgevingswet?
Since 1 January 2024 the Omgevingswet replaced the old WABO regime. The bouwvergunning no longer exists as a separate instrument. Everything runs through the omgevingsvergunning via Omgevingsloket, which can cover construction, environment, and use in one application. For prospecting purposes you watch one register instead of three, but the underlying signal is similar to the old bouwvergunning grant.
Does signal-led prospecting work for specialist subcontractors?
Yes, and arguably better than for tier-1 generals. Specialist trades (facade, MEP, prefab, demolition, lifts, fire protection) can read a permit and tell within an hour whether the project is in scope. The buyer is the project director at the developer or the procurement lead at the main contractor, both reachable before the tender. The challenge is volume: specialists often have a small ICP, and a sourced-signal approach concentrates effort where it matters.
How early can I get a signal before a tender is published?
Roughly 6-9 months for mid-market commercial projects, sometimes longer for housing or infra. The earliest credible flag is a positive ruimtelijk besluit or a granted omgevingsvergunning. Add a developer with a known ESG commitment (BREEAM-NL, Paris Proof) and the procurement question is essentially decided in spec writing, which precedes the tender by another 3-6 months.
We supply BAM, Heijmans, VolkerWessels. Does cold outreach work there?
Honestly, not really. Tier-1 EPC contractors run framework agreements, often have category buyers per discipline, and tend not to onboard new suppliers via cold email. The realistic entry path is via a sub-project, a partner contractor, or a supplier day. The approach on this page works best for the layer below: 10-50 FTE specialist contractors, installatiebedrijven, gevelbouwers, regional developers, and the consultancies serving them.
How do you handle KOMO and NEN-EN 1090 certification cycles as signals?
Certification renewals and new KOMO-keurmerk attestations are public. A new attestation often signals a product line launch or a new market entry, which usually comes with a marketing budget and a sales push. NEN-EN 1090 EXC2/EXC3 expansions flag a fabricator entering more demanding structural work, which is itself a buying window for inspection, welding consumables, and software.
What about UK projects: Planning Portal, Land Registry, Construction Online?
Coverage is solid for UK planning and procurement. Planning Portal (England), Land Registry mutations, and Construction Online tier 4 vendor lists are monitored alongside the Dutch sources. The signal logic is the same: planning grant precedes specification, specification precedes tender, tender precedes award. The pre-tender window is where the work is.
Lots of construction sales come from referrals and site visits. Where does this fit?
Alongside, not instead. Referrals and site presence still close most regional construction work. A signal-led layer is for the projects you would otherwise miss because you weren't on that site, that day. Try ten prospects from your actual list - permits, developers, subcontractors - and judge whether the output adds projects you didn't already know about. If it doesn't, it's not for you.