How to spec kitchen packages around shared ventilation stacks and compact layouts

If you run an interior design studio, kitchen procurement can quietly drain your time and your margin. Most studios already organize projects across pins, spreadsheets, and site-visit notes long before a system enters the picture.

In a historic canal house or a post-war apartment block, you are not just designing a beautiful culinary workspace—you are negotiating with centuries-old brick, stubborn concrete slabs, and communal building associations. When compact galley footprints overlap with shared building infrastructure, a single misplaced appliance spec can halt an entire installation.

To protect your design intent and your studio's profitability, you need to bring technical coordination directly into your procurement workflow from day one.

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Navigating the shared ventilation stack (Ventilatiekanaal)

In almost every Dutch apartment building, you will encounter a shared ventilation stack (ventilatiekanaal). Whether it is a historic building retrofitted with mechanical ventilation (MV) or a modern complex utilizing a heat recovery system (warmteterugwinning, or WTW), these systems rely on a delicate pressure balance across the entire building.

A common, costly mistake is spec'ing a high-powered, ducted extractor hood and planning to core a hole directly into the shared building stack. Doing this will disrupt the air pressure of the entire column. At best, the building association will force you to rip it out—at worst, you will push the smell of seared endives and garlic directly into the upstairs neighbor's living room.

When coordinating your appliance package, you must categorize your ventilation options immediately:

• Mechanical Ventilation (MV): These systems pull a constant, low volume of air from the kitchen and bathrooms. You cannot connect a motorized hood to this. You must spec a motorless hood (motorloze wasemkap) designed to work with central exhaust systems, or opt for a completely independent system.
• Heat Recovery (WTW): These systems are highly sensitive. Introducing a motorized external exhaust into a WTW loop can damage the central heat exchanger.
• Recirculation: This is almost always the safest and most compliant route for Dutch apartments. You will need to spec a hood that utilizes advanced active carbon filters or plasma filters.

When writing your specs, do not just write "extractor hood." Specify the exact filtration technology, the replacement schedule for the carbon filters, and make a clear note for the contractor that no physical connection to the building stack is to be made.

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The VvE approval milestone and technical boundaries

In the Netherlands, the Vereniging van Eigenaren (VvE) holds immense power over what you can and cannot do inside an apartment. Any alteration to the building's structural shell, common piping, or external facade requires formal VvE approval.

Plumbing relocations are a frequent flashpoint. If you want to move a sink drain just 1.5 meters to improve the flow of a compact kitchen, you must account for the physical gravity drain. In a concrete-floor apartment where you cannot channel into the structural slab, your pipe must run through the cabinetry toe-kicks (plinten).

A realistic coordination scenario

Let's look at how the math of a minor layout change can quickly cascade into a costly mistake.

Suppose you are designing a compact kitchen in an apartment on the Prinsengracht. You want to move the sink 1.5 meters away from the main vertical waste stack.

• The Rule: Waste pipes require a downward slope of at least 1 cm per meter to prevent clogs. For a 1.5-meter run, you need a drop of 1.5 cm.
• The Constraint: The waste pipe itself has an outer diameter of 40 mm (4 cm).
• The Cabinetry: You are spec'ing custom oak-veneered cabinetry from a regional maker like Houtwerk Amsterdam. To maximize vertical storage in the high-ceilinged room, you design a low-profile 5 cm toe-kick (plint).
• The Math: A 4 cm pipe plus a 1.5 cm slope requires 5.5 cm of vertical clearance.

Required Clearance: 4.0 cm (Pipe) + 1.5 cm (Slope) = 5.5 cm
Available Toe-Kick Height:                           5.0 cm
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Deficit:                                            -0.5 cm

If you send the cabinetry order to the workshop before verifying this math, the plumber will arrive on install day and realize the pipe cannot run through the toe-kick without raising the entire countertop height or cutting into the structural floor—which the VvE strictly forbids.

If the cabinetry has to go back to the shop to be remade with an 8 cm toe-kick, the cost implications are immediate:

• Custom Cabinetry Alteration: €1,200 in rush shop labor.
• Project Delay: 3 weeks of rescheduled installation slots.
• Appliance Storage Fees: €150 per week at the receiver's warehouse.
• Margin Impact: The €1,800 markup you earned on the €12,000 custom cabinetry package is almost entirely wiped out.

To prevent this, make the VvE written approval a formal milestone in your procurement tracker. No POs should be issued to your kitchen suppliers until the VvE has signed off on the plumbing plan and you have verified the toe-kick clearance against the plumbing slope.

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Designing for the millimeter: Galley layouts and appliance clearance

Dutch apartments, particularly historic ones, are famous for their narrow galley layouts. When your kitchen width is capped at 2.4 meters, every millimeter dictates whether a drawer can fully open or if a dishwasher door will block the main walkway.

Standard European countertops are 60 cm deep. In a double-sided galley kitchen, two runs of 60 cm cabinets eat up 1.2 meters of your width, leaving you with very little breathing room.

Standard Galley Clearance Math:
  Total Room Width:       240 cm
- Left Countertop:        -60 cm
- Right Countertop:       -60 cm
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Remaining Walkway:        120 cm
- Dishwasher Door Swing:  -65 cm
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Net Standing Clearance:    55 cm

When spec'ing appliances for these tight configurations, consider these physical realities:

1. Dishwasher Swings: A standard 60 cm dishwasher door swings out roughly 65 cm. In a narrow walkway, this completely blocks passage. Consider spec'ing a 45 cm integrated dishwasher—such as a Miele or Bosch slimline model—to preserve standing room.
2. Handle Projections: Integrated appliances are your best friend, but "integrated" can be a misnomer if the appliance handles protrude 5 cm into a tight walkway. Spec flush pulls, profile grips, or push-to-open mechanisms.
3. Oven Door Clearance: A drop-down oven door requires significant clearance for the user to stand safely in front of it. If space is tight, spec a compact combi-steam oven with a side-hinged door or a slide-and-hide door mechanism.

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How to organize your kitchen specs and VvE approvals in Alcove

Most studios we have worked with manage this intricate dance by keeping appliance specs in one spreadsheet, VvE approval letters in a shared drive, and installer notes in email threads. When information is scattered, details get missed, and margins suffer.

Alcove brings order to this process by linking your kitchen line items, stack coordination notes, and VvE approval milestones directly to your product records.

Instead of searching through old emails to see if the client approved the recirculating filter model, you can track the entire lifecycle of the kitchen package in one workspace. You can attach the VvE approval PDF directly to the plumbing line items, log the exact toe-kick height requirements in the cabinet specs, and generate clear, professional PDF spec sheets for your kitchen installer with a single click.

By keeping your technical constraints tied directly to your purchasing workflow, you ensure that what gets designed is exactly what gets built—so you can spend more time on design decisions and less on chasing vendors.

Price with clarity. Install with confidence.

See how we do it at alcove.co.

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FAQs

Can I connect a powerful extractor hood to a shared mechanical ventilation (MV) system?

No. Connecting a motorized hood to a shared building stack is typically forbidden by VvE rules because it disrupts the pressure balance and pushes your cooking odors into your neighbors' apartments. You must spec a recirculating hood with active carbon or plasma filters instead.

What is the standard toe-kick height for Dutch kitchen cabinetry?

While German and broader European systems often use 10 cm to 15 cm toe-kicks, compact Dutch designs sometimes drop to 8 cm or even 5 cm to maximize vertical cabinet storage. Keep this in mind when spec'ing under-counter appliances or routing waste pipes.

How do I document VvE approval requirements for my clients?

Keep the VvE approval status directly tied to the specific kitchen line items in your procurement tracker. This ensures that no POs are sent to your kitchen suppliers until the formal written consent from the building association is secured and logged.