Flensburg is the most northerly city in Germany, located directly on the border with Denmark. It is the third largest city in Schleswig-Holstein after Kiel and Lübeck. On the north-south axis, Flensburg is connected to Kiel and Hamburg to the south and Aarhus (Denmark) to the north via motorway 7.

Flensburg harbour, which was also an important naval base until the 1990s, is gradually declining in importance as an industrial port, which is why the eastern side of the harbour is to be developed into a mixed-use urban quarter. However, it is gaining relevance as a tourist and leisure harbour. Flensburg is also home to the Mürwik Naval Academy, which is responsible for the Gorch Fock sailing training ship, among other things.

The D-city Flensburg has 92,667 inhabitants.

Since the 2011 census, Flensburg has recorded considerable population growth of 11.9% up to 2023, which places the city among the fastest-growing D-cities. The forecast up to 2040 is also extremely positive with an expected increase of 13% - Flensburg is therefore among the highest 10% of all RIWIS cities with the highest forecast population growth and ranks among the five D-cities with the most dynamic population development.

Flensburg currently has 51,249 households, with the proportion of one-person households being at 42%. Above-average household growth of 16% is expected by 2040. The 10% share of students is comparatively high for a D-city and has a noticeable influence on the household structure.

Flensburg's demographic dynamics are characterised by a slightly negative natural balance on average over the last five years, but this is more than offset by a clearly positive migration balance, which explains the population growth. With an average youth dependency ratio of 30% and an average old-age dependency ratio of 33%, the age structure shows a relatively balanced distribution compared to other D-cities. In combination with the above-average proportion of students, Flensburg has a comparatively young population structure.

Flensburg is characterised by a particularly dynamic population development, which is primarily driven by inward migration. The above-average growth forecast for both inhabitants and households up to 2040 presents the city with positive challenges in terms of urban development and housing supply.

With 46,500 employees subject to social insurance contributions, Flensburg has an average-sized labour market among D-cities.

More than half of the employees in Flensburg, namely 53%, work in large companies. The sector structure shows a certain degree of diversification, with healthcare and social services accounting for the largest share at 20%, followed by manufacturing including construction (14%), wholesale and retail (13%) and public administration (11%). This distribution largely corresponds to a classic sector structure for D-cities.

The labour market dynamics in Flensburg have been above average in recent years. With employment growth of 5.5% over the last five years, the city is in the top third of all RIWIS cities and shows a robust development. The positive commuter balance of around 11,100 is concentrated regionally in the immediate neighbouring municipalities.

With an unemployment rate of 8.3%, the quality of the labour market in Flensburg is average compared to other D-cities. However, the development over the last five years shows an atypical trend with a slight increase of 0.3 percentage points, as Flensburg is one of the cities with the least favourable development among all RIWIS cities.

The stock of office space in Flensburg comprises around 415,000 square metres. Due to the strong presence of administration and service providers, demand for office space is guaranteed. With around 19,900 office employees, Flensburg is an average office location among D-cities.

The market dynamics in Flensburg show a differentiated picture. The average annual take-up of 6,000 sqm in the last five years is in the lower third of D-cities, which indicates restrained demand. At an average of 4,380 sqm per year, new construction activity is also in the lower range. The very low vacancy rate of 1.9% is remarkable and is one of the lowest of all RIWIS cities.

In terms of market valuation, Flensburg shows a price level typical of D-cities. The prime rent of EUR 12/sqm and the average rent of EUR 8/sqm in the city centre position the market in the middle of the D-cities. In line with the nationwide trend, yields have risen since 2022 and stood at 6.3% in the prime segment.

Flensburg is not part of any supra-regionally relevant logistics market region and does not have a dedicated logistics-relevant infrastructure. This indicates that the city plays a rather subordinate role in the logistics sector and is possibly less attractive for large logistics companies.

At EUR 4.5/sqm, prime rents for logistics and warehouse space in Flensburg are at the lower end of the D-cities and well below the average of all RIWIS cities. The picture is similar for service space at EUR 5.5/sqm. Overall, Flensburg presents itself as a favourably priced logistics location. At 8.0%, average yields for warehouses are at the upper end of the D-cities, while prime yields are rather average at 6.7%.

Conclusion: Flensburg is characterised by a low-cost logistics market with below-average rents. The relatively high average yields combined with moderate prime yields indicate a certain risk-return gap. Despite the lack of supra-regional logistics significance, the location offers potential for price-sensitive users.