Office Vacancy

The scale of the phenomenon in numbers

In the Île-de-France region, the rental vacancy rate averages between 7% and 9%, representing approximately 4 to 5 million square meters of empty office space available for rent. But this figure captures only part of the reality.

The hidden vacancy rate is much higher. With an average occupancy rate of 60 to 65% in companies practicing hybrid work, millions of additional square meters are being paid for but remain unoccupied several days a week. A company of 100 people with an average of two days of remote work actually uses only 60 to 70 workstations per day; the remaining 30 to 40 workstations are empty.

Geographical disparities are considerable. Paris’s Central Business District (CBD) has a vacancy rate of 3 to 4% (nearly full occupancy). La Défense fluctuates between 10 and 15%. Certain areas of the Northern Inner Ring or Évry-Courcouronnes exceed 20%. At this level, we are talking about structural vacancy: spaces that may never find tenants without significant intervention (major renovation, change of use, or repositioning of rental rates).

The national cost. When you combine vacant office space and underutilization, it is estimated that the equivalent of 8 to 10 billion euros per year is “wasted” in France on rent, utilities, and energy for offices that no one uses.

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Why Your Offices Are Empty (The 6 Main Causes)

1. Hybrid work. This has been the number one cause since 2021. When 40% of the workforce is working remotely every day, offices designed for 100% on-site presence become oversized. The shift to flex office absorbs part of the surplus, but rarely all of it.

2. A reorganization or workforce reduction. Mergers, layoff plans, strategic refocusing. The company ends up with excess space and a lease that still runs for 3 to 6 years. The vacancy is imposed, not chosen.

3. A poorly planned move. The company leaves its premises but has not found a solution for the old site. Double rent for months, or even years.

4. Building obsolescence. A building without air conditioning, with a poor energy performance rating, run-down common areas, and accessibility features that do not comply with regulations struggles to attract tenants. Vacancies set in and become a self-perpetuating cycle: lower occupancy = lower revenue = less investment in maintenance = reduced appeal.

5. A location that has become unsuitable. A neighborhood with poor public transportation, no dining options, and far from employment hubs. The Grand Paris Express will reshuffle the deck, but until then, certain areas are suffering.

6. Misaligned pricing. Charging Grade A rent for a Grade C building is a surefire way to guarantee vacancies. The market is transparent: tenants compare prices. A rent 10 to 15% higher than the local market is enough to deter prospective tenants.

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What vacancy really costs

Vacancy isn’t just a loss of income. It’s a financial drain that worsens over time.

Direct costs. Rent continues to accrue (if you’re a tenant) or condominium fees and property taxes remain due (if you’re a homeowner). Basic cleaning, security, frost protection, and insurance. These fixed costs do not disappear when the offices are empty.

Indirect costs. An unoccupied building deteriorates faster than an occupied one: technical systems (air conditioning, plumbing, electricity) that are not used regularly break down. Refurbishment after a long period of vacancy costs 2 to 3 times more than routine maintenance.

Asset depreciation. A property that has been vacant for more than 12 months loses market value. Investors and potential buyers apply a 10% to 20% discount to an asset where vacancy appears to be structural. Vacancy creates a vicious cycle: lower value = less investment capacity = less attractiveness = more vacancy.

The solution to ending vacancy: restructuring your market offering

The commercial real estate market has changed. Companies are no longer looking for a rigid 9-year lease on bare walls; they want ready-to-use spaces with integrated services, contractual flexibility, and a predictable budget. Given this new reality, offering a traditional lease on an empty space means catering to a shrinking market. The real solution is to restructure your offering to capture demand as it exists today.

That’s exactly what Sora does. Rather than leaving your spaces empty while waiting for a hypothetical traditional tenant, Sora transforms your real estate offering by making it compatible with the expectations of today’s market.

The financial assessment. It all starts with a comprehensive analysis of your situation: rent, utilities, taxes, operating expenses. Sora breaks down your cost structure to determine the best possible coverage ratio. The goal is not to sell your spaces at a discount, but to price them at the fair market rate.

Structuring the offering. Sora takes your gross square footage and transforms it into an attractive turnkey offering: fit-out if necessary, pricing strategy, integrated services (cleaning, maintenance, reception, Wi-Fi). Your spaces transform from a traditional real estate product into a comprehensive service offering that businesses are ready to purchase immediately.

Active marketing. The operator finds guests, evaluates requests, arranges tours, and finalizes booking contracts. You don’t have to manage a thing.

The legal model that makes it all possible. The Sora model is based on service provision. The company retains ownership of its lease and remains in control of its space.

Day-to-day management. Once guests are settled in, Sora handles all day-to-day operations: a dedicated Workplace Manager, a ticketing system for requests, billing, and maintenance. The host receives recurring income without ever having to worry about operations.

Concrete results. In the Île-de-France region, Sora Hosts cover between 50% and over 100% of their own rent on the spaces made available. What was a net expense becomes a partially or fully offset expense, and in some cases, a source of profit.

Vacancy is not inevitable. It is a problem of supply that is poorly calibrated to meet evolving demand. By restructuring this supply with a specialized operator, vacant spaces regain their utility and profitability.

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How to Measure and Track Your Vacancy Rate

The rental vacancy rate = Vacant space / Total property area. This is the most common indicator. If it exceeds 10%, there is a problem that needs to be actively addressed.

Physical occupancy rate = Number of units actually occupied each day / Number of available units. This indicator captures under-occupancy, which the rental vacancy rate does not account for. A rate below 60% indicates oversizing.

Monthly revenue shortfall = Vacant space × Market rent per square meter. This figure, calculated monthly, quantifies the cost of inaction. For a CFO, it is the most compelling argument for taking action.

Average time to re-lease = Time between one tenant’s departure and the next tenant’s arrival. Beyond 6 months, each additional month significantly erodes the asset’s profitability.