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Transcript of University of Stuttgart | Institute for Construction Economics | Dipl.-Ing. E. Beusker Indicators...
Univ
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Indicators and Drivers of Occupancy Costs
• defining the problem
• approach
• objectives/ results
ERES Conference 2009 1
Dipl.-Ing. Elisabeth BeuskerProf. Dr. Christian StoyInstitute for Construction EconomicsUniversity of Stuttgart
Univ
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occupancy costs comprise the biggest part of LCC
occupancy costs p.a. in percentage of the construction costs , related to different object-types (according to Grondring)
defining the problem
ERES Conference 2009 2
schools an kindergartens
30%
3 - 4 years
Univ
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operation and maintenance costs €/ m² gross external area * year (incl. VAT, 2007)
defining the problem
ERES Conference 2009 3
school 1
school 2
school 3
school 4
school 5
school 6
gymnasium 1
gymnasium 2
gymnasium 3
gymnasium 4
gymnasium 5
gymnasium 6
utilities operation, inspection and repair cleaning/care of the building maintenance of constructions cleaning/care of external structures maintenance of technical installations
Univ
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► what comprises and drives occupancy costs of
municipal buildings?
phase I
phase II
phase III
objectives
► databased management of municipal buildings
approach
ERES Conference 2009 4
definition of relevant cost drivers
definition of the cost structure
collecting the data (schools, gymnasiums)
analyzing and describing the data
definition of relevant cost drivers and indicators
Univ
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factor groups indicators (examples)utilization type, standard and intensity of usebuilidng characteristicsfunctional charactristics geometry, orientation of the building technical characteristics year, type and present condition of
constructions, percentage of glass surfaces, kind of energy source,
standard of technical installationsstrategie maintenance strategie,
energy management, reportingcontracting, outsourcing-rate
location regiontopography of the plot
environment standards, market dynamics, climate
definition of relevant cost drivers
ERES Conference 2009 5
Univ
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capital costs capital resources,depreciation
management costslabour costs,material costs,external services
operating costs costs of utilities,costs of wast disposal,costs of cleaning an care,costs of operation, inspection and
repair,costs of monitoring and security, charges and contributions
maintenance costs maintenance costs of constructions,maintenance costs of technical
installat.,maintenance costs of external
structures,maintenance costs of interiors
► object-related occupancy costs
definition of the cost structure - DIN 18960 (2008)
ERES Conference 2009 6
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investigation of occupancy costs (cross tabulation)• time-series analysis
quantity survey• plot areas• areas and volumes of buildings, DIN 277 (2005)• element surfaces
investigation of object data (data entry form)• general data of the object • interviews (occupants, facilities manager, owner)• present condition of constructions and technical installations• plan-specific data
collecting the data (schools, gymnasiums)
ERES Conference 2009 7
Univ
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• description and quantification of relevant cost drivers for occupancy costs (design rules, basic conditions)
• definition of relevant indicators for occupancy costs
results for the projectpartner
• occupancy costs benchmarks of municipal buildings• mitigation occupancy costs (provision of real estate, allocation
of occupancy expenditures to external users)• forecasting occupancy costs• utilization of LCC as a decision criterion (evaluation of
alternatives in early project phases)
►optimization of planning, building and using cost-optimized
and financially sustainable real estate
objectives of the investigation
ERES Conference 2009 8