Skip to content
Property ROI: how do you calculate the return on investment for a rental flat?
15 July, 2026

Property ROI: how do you calculate the return on investment for a rental flat?

Property ROI – why is it worth knowing?

Buying a flat to let is one of the most popular ways to invest capital. However, the increase in the property’s value alone should not be the sole criterion for assessing an investment. Equally important is the rate of return, or ROI (Return on Investment), which allows you to determine how effectively your invested funds are working.

Understanding the ROI helps you compare different properties, make informed investment decisions and assess whether buying a flat will actually be profitable.

Home Blog Property ROI: how do you calculate the return on investment for a rental flat?

In the case of property, this indicator shows the profit generated by a flat in relation to its purchase price and maintenance costs.

The higher the ROI, the more profitable the investment.

ROI = (annual net profit / total investment cost) × 100%

Example:

  • purchase of a flat – 700,000 PLN
  • fitting-out costs – 70,000 PLN
  • commissions and fees – 30,000 PLN

Total investment cost:

800,000 PLN

Annual rental income:

66,000 PLN

Annual costs:

  • service charges
  • tax
  • insurance
  • minor repairs
  • periods of vacancy

Total:

16,000 PLN

Annual net profit:

50,000 PLN

ROI:

50,000 / 800,000 × 100% = 6.25%

This means that the investment generates a return of approximately 6.25% per annum.

Location
The location of a property has the greatest impact on the rate of return. Flats situated in well-connected parts of major cities usually find tenants more quickly and command higher rents.

Standard of finish
Modern and well-equipped flats are more attractive to tenants, which helps to minimise periods of vacancy and command higher rents.

Maintenance costs
All expenses relating to the property must be taken into account in the calculations:

  • administrative fees,
  • insurance,
  • taxes,
  • maintenance,
  • repairs,
  • property management costs.

It is only the profit after deducting all costs that reveals the true profitability of an investment.

Many investors only take into account the amount of rent received from the tenant. This is one of the most common mistakes.

It is important to bear in mind factors such as:

  • notary fees,
  • property transfer tax,
  • estate agent’s commission,
  • fitting-out costs,
  • furnishings,
  • periods without a tenant,
  • renovations and repairs,
  • mortgage costs.

Failing to take them into account may significantly overstate the actual rate of return.

Not necessarily.

Sometimes, a property offering a slightly lower rate of return will be a safer investment because of:

  • greater potential for capital appreciation,
  • a better location,
  • stable demand for lettings,
  • lower risk of vacancies.

Therefore, when analysing an investment, it is worth taking into account both the current rental income and the long-term increase in the property’s value.

The return on investment can be realistically influenced by:

  • careful selection of the location,
  • professional preparation of the property for letting,
  • setting the right rental price,
  • minimising vacancies,
  • effective promotion of the property,
  • regular monitoring of running costs,
  • professional letting management.

Experienced property managers help maintain high occupancy rates, coordinate repairs and ensure efficient tenant support, which translates into higher returns on investment.

Calculating ROI is one of the fundamental elements of analysing any property investment. Taking into account all costs and potential income enables you to make informed decisions and plan the growth of your investment portfolio more effectively.

If you are planning to buy a flat to let or wish to increase the profitability of your existing property, it is worth drawing on the expertise of property market specialists. Professional advice and rental management help to minimise investment risk and achieve stable, long-term returns.

Find out more at www.leachandlang.pl

Take a look at our property management services too

Adding a property

Property details

Property types
Type of offer
Voivodeship
County / city
Commune / district
Street
Building number
Apartment number
Number of rooms
Surface
Description
Price
Currency

Contact details

Company name
* Name
* Last name
* E-mail
* Phone
I consent to the processing of my personal data by Polo Group Thomas Leach, ul. Garncarska 8/4, 31-115 Kraków, NIP: 6762284832 to contact us regarding the offer of Leach & Lang Property Consultants.
I declare that I have read and accept it Privacy policy.
I consent to receiving commercial information electronically, including marketing content in the area of ​​real estate trading within the meaning of the Act of July 18, 2002 on the provision of services by electronic means