DEV Community

Cover image for How We Solve the “Empty Nights” Problem in Booking Systems
Stefan Unterberger
Stefan Unterberger

Posted on

How We Solve the “Empty Nights” Problem in Booking Systems

Empty nights are one of the most underestimated problems in short-term rental platforms.

From a technical perspective, most booking systems work perfectly — they store availability, prices, and reservations reliably.

From a business perspective, however, they fail at one crucial point: unused inventory between bookings.

In this article, I’ll explain:

  • why empty nights are a structural problem
  • why discounts are a bad technical workaround
  • how gap-based demand matching works
  • how we approach this problem with Unbooked

Empty Nights Are a Systemic Issue

Empty nights don’t happen because listings are bad.

They happen because traditional booking systems assume:

  • fixed check-in and check-out dates
  • rigid minimum stays
  • guests that adapt to the calendar

In reality, guest demand is often flexible, while calendars are not.

This mismatch creates:

  • 1–2 night gaps
  • mid-week holes
  • fragmented availability

From a data perspective, this is unused inventory, not missing demand.


Why Discounts Are the Wrong Solution (Technically)

Most platforms try to solve gaps by:

  • lowering prices
  • removing minimum stays
  • pushing last-minute deals

Technically, this is a brute-force approach.

Problems with this strategy:

  • it changes price signals instead of availability logic
  • it introduces negative feedback loops (guests wait for discounts)
  • it optimizes for short-term occupancy, not long-term yield

Discounts treat a pricing symptom, not a matching problem.


Reframing the Problem: Demand Should Adapt to Availability

Instead of forcing availability to adapt to demand, we invert the logic.

The key idea:

Let demand be flexible — and match it to existing gaps.

In practice, this means:

  • guests define date ranges, not fixed dates
  • the system evaluates gaps dynamically
  • notifications happen only when a match exists

This turns availability gaps into first-class data objects.


Gap-Based Demand Matching (Conceptually)

At a system level, gap-based matching consists of:

  • normalized availability windows
  • minimum/maximum stay constraints
  • flexible demand intervals
  • deterministic matching rules

When a gap satisfies:

  • length constraints
  • price expectations
  • guest flexibility

→ a match is created without modifying the base price.

No discounts.

No artificial urgency.

No calendar manipulation.


How We Apply This at Unbooked

Unbooked is built around this exact idea.

Instead of publishing fixed listings, we focus on:

  • gap detection
  • demand intent
  • rule-based matching

Hosts keep:

  • their prices
  • their minimum stays
  • their existing platforms (Airbnb, Booking, etc.)

Unbooked operates alongside traditional booking systems, filling what they cannot.

👉 https://unbooked.app


Why This Matters for Booking System Design

From a system design perspective, this approach:

  • separates pricing from matching
  • avoids destructive optimization loops
  • improves inventory utilization without side effects

More importantly, it aligns the system with real user behavior, not assumptions.

Availability is rigid.

Demand is flexible.

Systems should reflect that.


Final Thoughts

Empty nights are not a marketing problem.

They are not a pricing problem.

They are a matching problem.

Once you model them correctly, the solution becomes obvious.

If you’re interested in how this works in practice, I’m documenting the technical and product decisions behind Unbooked as we build it.

👉 https://unbooked.app

Top comments (0)