Absorption period and cash flow when selling flats from a divided tenement building
Published 21 October 2026
The absorption period – the time it takes the market to absorb all units in a building – has no fixed value. It depends on the type of flats, location, price, and preparation quality. Money from a particular flat arrives only after the ownership right is registered with the Czech Land Registry (katastr nemovitostí), so reconstruction and other costs must be planned so the building does not depend on early sales.
Summary
- Absorption period is an estimate, not a guarantee: it depends on demand for the specific flat type in the given location and pricing strategy.
- Money for a unit is released only after registration with the Czech Land Registry (katastr nemovitostí); the registration itself takes approximately 22 days and is just one step in the process.
- It is advisable to finance reconstruction from your own resources or loans, not from sales revenue that does not yet exist.
- Cash flow is planned in phases with a buffer; move to the next phase only with confirmed figures.
What is absorption period and why your budget depends on it
The absorption period describes how long the market takes to absorb a given number of units at the chosen price. For a divided tenement building (činžák), this is the entire period from the start of sales to the sale of the last unit. It is not the time to sell one flat, but the rate at which the building is sold off by the owner.
For the owner, this is a key figure for two reasons. First, it determines when invested capital will return. Second, it affects how long the building must cover operating costs, insurance, management, and potential loan interest. The typical value uplift from selling a building as a whole versus reselling individual units is 20–40%, but this is realised gradually and the exact figure is confirmed only in the feasibility study. Slower sales therefore do not necessarily mean a worse project, just a longer period that requires financial bridging.
How absorption period varies by flat type and location
Specific timeframes would be speculation without data from your particular market. However, we can describe the factors that most influence the pace of sales.
Flat type and layout
- Smaller flats appeal to a wider pool of buyers, including investors and first-time buyers, and tend to be more liquid.
- Larger flats have a narrower buyer pool and often take longer to sell, especially at higher prices.
- Non-standard layouts, ground-floor flats, or awkward configurations sell more slowly or require price adjustments.
- Technical condition and features (lift, balcony, basement storage) influence both interest and price.
Location
- In areas with steady demand and good accessibility, units sell faster.
- In smaller towns or peripheral areas, the pace slows and mortgage availability for buyers also plays a role.
- Crucial is the building's surroundings: local amenities, transport links, street condition, and the state of neighbouring buildings.
A realistic estimate therefore comes from local comparable sales and supply, not from general averages. You can get an initial idea of the building's economics in the building potential calculator, but binding figures emerge only during the audit.
From contract to payment: when money actually arrives
Between reserving a flat and receiving payment there are several steps, each with its own timeline.
- Reservation and contract. The buyer reserves the unit, followed by contract preparation and verification of documents.
- Escrow. The purchase price is typically paid by bank transfer into a lawyer's escrow account. Cash payments are limited to CZK 270,000 per day (Act No. 254/2004), so cash is impractical for flat purchases.
- Application for registration. Ownership of the property transfers only upon registration with the Czech Land Registry (katastr nemovitostí). The Land Office cannot decide before 20 days have passed since notifying the owner (Czech Land Registry Act No. 256/2013). Average registration time is approximately 22 days.
- Release of escrow. Once registration is completed, funds are released to the seller according to the escrow agreement terms.
Practically speaking, expect that at least the registration period plus associated administration will pass between signing and payment. If the flat is mortgaged by a financing bank, add time for releasing the mortgage or paying down the loan from the purchase price.
For buyers, it is favourable that transfer tax on real property has been abolished (Act No. 386/2020), so this cost does not slow their decision-making.
Planning cash flow by phases
The cash flow of a divided tenement building should not be planned as a single item. It makes sense to break it down by project phases, which correspond to the process described in How it works.
Preparation phase: expenses without revenue
This includes legal analysis, technical assessment, design and permitting steps under the Building Act No. 283/2021, and related cadastral procedures. No sales revenue exists yet, so the owner finances this phase from their own resources. The project passes through three gates (legal, permit, sales gate) and only proceeds to the next phase with confirmed figures, preventing unnecessary capital lock-up.
Implementation phase: highest capital requirement
Reconstruction, common area improvements, and any building work require financing before the first buyer pays. This is where projects most often run into reserve shortfalls. The plan should not rely on early sales to cover reconstruction costs.
Sales phase: revenue after registration
Revenue arrives in bursts, depending on completed sales, with delays from escrow and registration. A good plan models several sales-pace scenarios, from slower to faster, and verifies the building can sustain even the slower one.
Final phase: completion and settlement
Final units, defects claims, accounting, and potential loan settlement. Remaining units are sometimes retained for rental, which stabilises cash flow.
How to finance reconstruction during phased sales
Basic principle: costs incurred before sales must have a source independent of those sales. Typically, the following routes are available:
- The owner's own funds, or rental income the building generates before sale.
- A bank loan secured against the building, with repayment linked to release of the mortgage as units are sold. Terms must be arranged in advance so the bank releases security as flats are sold.
- A joint venture with a partner who contributes capital in exchange for a share of returns. Such partnerships also share risk, which must be factored into project economics.
The website describes three forms of cooperation: Audit and plan, End-to-end realisation, and Partnership / JV. The choice depends on whether the owner wants to carry financing and management alone or share it.
The budget should also include a reserve in case not all units sell at the originally expected price. The schedule is updated continuously as sales occur.
Tax and timing of income
The tax impact of a sale varies depending on whether the property is held privately or is a business activity, and the length of holding or residential use. General rules, including the "time test", are set out in the Income Tax Act No. 586/1992. Assess the specific impact for you with a tax adviser or contact the Tax Office. It is important to include tax in your cash flow plan so that once escrow is released, you have enough to pay it.
How to get a realistic estimate for your building
A reliable estimate of absorption period and cash flows cannot be taken from a general article. It is based on analysis of the specific building, its legal and technical condition, unit structure, and local market. This is what the Audit and plan service does – a paid feasibility study with results in six weeks. The output is figures on which the owner decides whether to proceed to the next phase.