Univ
ers
ity o
fStu
ttgart
|
Institu
te f
or
Constr
uction
Econom
ics
| D
ipl.-I
ng.
K.
Quante
, Pro
f. D
r. C
. Sto
y
ERES Conference 2017
Real Estate Management of sacral buildings:
Evaluation of repair and maintenance costs
University of Stuttgart
Institute for Construction Economics
Prof. Dr. Christian Stoy
Keplerstrasse 11 | D-70174 Stuttgart
www.bauoekonomie.uni-stuttgart.de
29th June 2017
Dipl.-Ing. Kathrin Quante
Univ
ers
ity o
fStu
ttgart
|
Institu
te f
or
Constr
uction
Econom
ics
| D
ipl.-I
ng.
K.
Quante
, Pro
f. D
r. C
. Sto
y
ERES Conference 2017
• Defining the problem
• Approach
• Data collection
• First results
Content
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fStu
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Institu
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or
Constr
uction
Econom
ics
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ipl.-I
ng.
K.
Quante
, Pro
f. D
r. C
. Sto
y
ERES Conference 2017
Changed
conditions
Maintenance of
a great number
of sacral
buildings
Decreasing
revenues
Scope: Cost-optimized real estate management
Motivation
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ity o
fStu
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Institu
te f
or
Constr
uction
Econom
ics
| D
ipl.-I
ng.
K.
Quante
, Pro
f. D
r. C
. Sto
y
ERES Conference 2017
Base of investigation
Sacral buildings:
• Public buildings for religious ceremonies as defined in Can.1214
CIC, Codex Iuris Canonici.
• 250 catholic churches
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Institu
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or
Constr
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Econom
ics
| D
ipl.-I
ng.
K.
Quante
, Pro
f. D
r. C
. Sto
y
ERES Conference 2017
Superior goal:
How many buildings can be maintained by the
diocese?
• What are the main cost influential factors?
Project:
Which data has to be collected? Which information is
needed?
• Cost data
• Information about the buildings
Problem statement
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Institu
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or
Constr
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Econom
ics
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ipl.-I
ng.
K.
Quante
, Pro
f. D
r. C
. Sto
y
ERES Conference 2017
Approach: Empirical survey
Expert interviews
Data collection
Statistics
Transfer into practice
Cost data
Questionnaire
Cost
Indicators
Data
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f. D
r. C
. Sto
y
ERES Conference 2017
Collecting data
Factor Groups Indicators (examples)
Building characteristics geometry, year of construction,
architectural style, towers, type and
present condition of constructions,
type, condition of technical installation,
specific features like bells or organ,…
Utilization standard and intensity of use, …
Location region, topography, climate, market
dynamics, …
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fStu
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or
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uction
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Quante
, Pro
f. D
r. C
. Sto
y
ERES Conference 2017
Collecting cost data
Object-related repair and maintenance costs according to
DIN 31051: “Fundamentals of maintenance”
4.1.2. Maintenance Service
4.1.3. Inspection
4.1.4. Repair
4.1.5. Improvement
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Quante
, Pro
f. D
r. C
. Sto
y
ERES Conference 2017
Overview about cost data
Number of measures per building (N=28)
0
20
40
60
80
100
120
140
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
Maintenance and Inspection Repair
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, Pro
f. D
r. C
. Sto
y
ERES Conference 2017
Defining a cost structure
Structure base on DIN 18960 “Running costs of building”
100 Cost of capital
200 Management costs
300 Operating costs
…
…
352 Inspection and maintenance of building construction
353 Inspection and maintenance of technical installation
…
355 Inspection and maintenance of furnischings and equipement
400 Repair costs
410 Repair costs of construction
421 Drainage, water and gas suppy systems
422 Heat supply systems
423 Air treatment systems
424 Electricity supply
425 Telecommunications and other communications systems
426 Handling systems
427 Function-related systems
…
441 Furnishings and eqipement
442 Works of art
…
350 Operation, inspection and maintenance
440 Repair costs of furnishings and
equipment
420 Repair costs of technical installations
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Institu
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or
Constr
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ipl.-I
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K.
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, Pro
f. D
r. C
. Sto
y
ERES Conference 2017
First Results
Cost per building [€*year], (N=28, 6 years)
Cost in refer to the building size [€/m³ BRI*year], (N=28, 6 years)
0 10000 20000 30000 40000 50000 60000
1
0 2 4 6 8 10 12
1
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Institu
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or
Constr
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K.
Quante
, Pro
f. D
r. C
. Sto
y
ERES Conference 2017
First Results
Repair cost (KG 410-441) in relation to cost for inspection and
maintenance (KG 352-355), [€/m³ BRI*year], (N=28, 6 years)
0 1 2 3 4 5 6 7 8 9 10 11
352-355
410-442
Univ
ers
ity o
fStu
ttgart
|
Institu
te f
or
Constr
uction
Econom
ics
| D
ipl.-I
ng.
K.
Quante
, Pro
f. D
r. C
. Sto
y
ERES Conference 2017
Real Estate Management of sacral buildings:
Evaluation of repair and maintenance costs
University of Stuttgart
Institute for Construction Economics
Prof. Dr. Christian Stoy
Keplerstrasse 11 | D-70174 Stuttgart
www.bauoekonomie.uni-stuttgart.de
29th June 2017
Dipl.-Ing. Kathrin Quante
