Is it better to sell an apartment building by unit or as a whole?
Published 12 October 2026
Selling unit by unit is typically the more valuable route: the uplift over a sale as a whole usually falls in the range of +20–40%. In exchange, you accept a longer timeline, the need for upfront capital and more decisions along the way. The exact figure for your building can only be established by a feasibility study, meaning a check of the project's viability and economics.
Summary
- The typical value uplift for selling unit by unit is +20–40%; a feasibility study gives the actual figure for your building.
- Selling as a whole is faster, simpler and needs minimal capital; selling by unit yields more but takes longer and is more demanding.
- The deciding factors are the state of the legal and building documentation, the tenant structure, available capital and your time horizon.
- Settle income tax questions in advance with a tax adviser or the Czech Financial Administration (Finanční správa); this article gives only a general framework.
The two exit scenarios at a glance
When you sell the building as a whole, you look for a single buyer, typically an investor, who takes over the building together with its tenants, its technical condition and any legacy problems. The price is based on yield and on the risks the buyer factors in. Ownership passes upon registration in the katastr nemovitostí (the Czech Land Registry) under the Land Registry Act, No. 256/2013 Coll.
When you sell by unit, you first prepare the building legally and technically, divide it into individual residential units and sell them one at a time. Each unit is valued separately, usually as a flat for an end user.
The value uplift is typically quoted at +20–40% in favour of selling by unit. This is an indicative range, not a promise: for a specific building it will depend on the location, layouts, condition and preparation costs. You can get a rough estimate using the building potential calculator.
Comparison table of criteria
The overview below summarises how the two scenarios differ. The assessment is qualitative, because the actual parameters depend on the specific building.
| Criterion | Sale as a whole | Sale by unit |
|---|---|---|
| Timeline | Shorter; the main time items are negotiating with the buyer and registration in the Land Registry | Longer; preparation, division of the building and the sale of individual flats happen in stages |
| Capital required | Minimal | Higher; you need to fund preparation, documentation and any alterations |
| Risk | Concentrated in one transaction and with one buyer | Spread out, but includes legal, permitting and sales risk |
| Income tax | Depends on the holding period, use of the property and the seller's status; check with an adviser | Depends on the same circumstances; check in advance with an adviser or the Financial Administration |
| Tenants | Pass to the buyer with their existing contracts | Each unit and its tenancy must be dealt with individually |
| Conversion costs | Usually none on the seller's side | Typically higher; they must be built into the project's economics |
| Expected value | Baseline for comparison | Typically +20–40%; a feasibility study determines the exact figure |
Time and capital: when speed outweighs value
A sale as a whole makes sense when you need liquidity quickly, for example to settle an inheritance or debts, or because your investment strategy has changed. You put no further funds in, and the outcome is more predictable.
Selling by unit requires patience. Income arrives gradually, and preparation costs must be borne before it does. If you lack the capital or do not want to carry the burden yourself, there is a model in which a partner finances or shares the project; see partnership / JV.
Also pay attention to secure settlement. Cash payments are limited to CZK 270,000 per day (Act No. 254/2004 Coll.), so serious transactions are settled by bank transfer, commonly through a lawyer's escrow account. This applies in both scenarios, though with a sale by unit it happens repeatedly.
Risk and tenants
With a sale as a whole, the risk is concentrated: during due diligence the buyer may reduce the price because of the building's condition, the tenancy agreements or gaps in the documentation. Once the contract is signed and ownership registered, however, the transaction is closed.
With a sale by unit, the risk is split into several layers: legal (ownership, encumbrances), permitting (requirements of the Building Act) and sales (demand and unit prices). It is therefore sensible to proceed in phases and move to the next only on the basis of confirmed numbers. The process described in How it works is built this way: the project passes through three gates (legal, permit, sales gate).
Tenants are often the deciding factor. In a sale as a whole, their position usually remains unchanged, as the buyer takes over the tenancy agreements. In a sale by unit, you need to map the tenancy structure, distinguish vacant from occupied units, and set the pricing and timetable accordingly.
Taxes: a general framework only
The real estate acquisition tax (daň z nabytí nemovitých věcí) was abolished (Act No. 386/2020 Coll.), so the buyer does not bear this tax. The seller may be subject to income tax under the Income Tax Act.
In general, it depends mainly on whether you are an individual or a legal entity, how long you have owned the property (the time test) and whether it served as your own home. Specific conditions vary from case to case, so assess your situation in advance.
Check the current rules on the Financial Administration website or with a tax adviser. This article is not tax advice.
Conversion costs and why to calculate them upfront
A sale by unit usually requires investment: documentation, possible construction and layout alterations, resolving the common areas, documents for the Land Registry and preparing the sale. These costs cannot be estimated in general terms, so they need to be priced for the specific building and weighed against the expected benefit.
This is what a paid feasibility study is for. The Audit and plan delivers its output within 6 weeks and shows whether the value difference is worthwhile after costs and time are deducted. If it is not, you can choose a sale as a whole, but with a substantiated figure in hand.
How to decide
As a guide, consider these questions:
- How quickly do you need the money? Urgency favours a sale as a whole.
- Do you have the capital and capacity for preparation? If not, consider a partner or a sale as a whole.
- What is the state of the documentation and tenancies? A clear situation improves the chances of a successful division.
- What is the expected value after costs? A feasibility study determines this, not a rough guess.
- Are you an owner, heir, investor or a homeowners' association (SVJ)? Typical situations are described on the page Who Činžáky.com is for.
If the reasons for a quick sale are strong, the +20–40% difference may not be decisive. If you have the time, it is worth calculating the difference before you decide.