Office asking rents in Germany鈥檚 main regional cities rose faster than in the country鈥檚 seven largest cities last year.

Research by investment manager  found tenant demand for affordable and prime space drove the growth.

Average monthly asking rents in Germany鈥檚 14 key regional cities* rose 3% last year to 鈧8.10 per sqm, according to a survey by Corpus Sireo and research firm Empirica.

Regional cities outpaced the 1.8% growth in the average monthly asking rent of 鈧16 per sqm in Germany鈥檚 Big Seven office markets of Berlin, Cologne, D眉sseldorf, Frankfurt, Hamburg, Munich and Stuttgart.

Franz Krewel, Corpus Sireo鈥檚 commercial asset management managing director, said investors and clients were finding 鈥渟maller and less glamorous鈥 key regional office markets in Germany more attractive.

鈥淧roperties in these cities generate higher-yielding cashflows than assets in the Big Seven markets, while offering prospects of less volatile and solid rental growth,鈥 he said.

The weight of money targeting Germany鈥檚 Big Seven office markets drove down prime office yields by 20 basis points last year to 4.3-4.8%, the firm said.

Krewel said the weight of money targeting the Big Seven cities meant investors were discovering often overlooked key regional city office markets鈥 for their 鈥渁ttractively priced assets and stable income returns鈥.

Record low interest rates and quantitative easing by the European Central Bank mean a benchmarked 10-year German government bond currently yields 0.2%.

That compares with a 4.25% yield for a prime office in Munich, highlighting the historically wide yield differential that lies behind the investor demand for real estate assets.

*The 14 key regional cities are: Aachen, Bonn, Bremen, Dortmund, Dresden, Essen, Hanover, Karlsruhe, Leipzig, Mainz, Mannheim, M眉nster, Nuremberg and Wiesbaden.