10% growth in Castellum's income from property management

   * Rental income for the period January-March 2013 amounted to SEKm 814 (SEKm
     753 corresponding period previous year).
   * Income from property management amounted to SEKm 300 (273), corresponding to
     SEK 1.83 (1.66) per share, an increase with 10%.
   * The changes in value on properties amounted to SEKm 32 (10) and on interest
     rate derivatives to SEKm 166 (206).
   * Net income after tax for the period amounted to SEKm 403 (362),
     corresponding to SEK 2.46 (2.21) per share.
   * Net investments amounted to SEKm 333 (323) of which SEKm 407 (307) were new
     constructions, extensions and reconstructions, SEKm 6 (24) acquisitions and
     SEKm 80 (8) sales.

Gross leasing (i.e. the annual value of total leasing) during the period was
SEKm 84 (73), of which SEKm 4 (10) were leasing of new constructions, extensions
and reconstructions. Notices of termination amounted to SEKm 57 (81), of which
bankruptcies were SEKm 4 (6) and SEKm 1 (14) were notices of termination with
more than 18 months remaining length of contract. Hence net leasing for the
period was SEKm 27 (-8).

"It can be noted that the first quarter shows both a steady growth in income
from property management and strong net leasing for Castellum. The credit
facilities has been increased by SEK 1 billion through the new issue of a 4-year
MTN and the project portfolio continues to expand, featuring many larger as well
as smaller projects", comments CEO Henrik Saxborn. "Along with my colleagues, I
look forward to continuing Castellum's development, with a focus on cash flow
and a long-term perspective in actions", Saxborn adds.

Enclosure: Interim Report January-March 2013

For further information, please contact
Henrik Saxborn, CEO, phone +46 31 60 74 50
Ulrika Danielsson, Finance Director, phone +46  706-47 12 61

www.castellum.se

Castellum is one of the major listed real estate companies in Sweden. The fair
value of the real estate portfolio amounts to SEK 37 billion, and comprises
premises for office, retail, warehouse and industrial purposes with a total
lettable area of 3.6 million sq.m. The real estate portfolio is owned and
managed by six wholly owned subsidiaries with strong local roots in five growth
regions: Greater Gothenburg, the Öresund Region, Greater Stockholm, Mälardalen
and Eastern Götaland.
Castellum is listed on NASDAQ OMX Stockholm AB Large Cap.

Castellum AB (publ) discloses the information provided herein pursuant to the
Securities Markets Act and/or the Financial Instruments Trading Act.

 This announcement is distributed by Thomson Reuters on behalf of 
 Thomson Reuters clients. The owner of this announcement warrants that: 
 (i) the releases contained herein are protected by copyright and 
     other applicable laws; and 
 (ii) they are solely responsible for the content, accuracy and 
      originality of the information contained therein. 
     
 Source: Castellum AB (publ) via Thomson Reuters ONE