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Design Economics and Cost Planning, ASSUMPTIONS, typical exclusions,…
Design Economics and Cost Planning
Structure
Exc. Summary
Recon.
Basis & Assumptions
Breakdown
Area Schedule
Cost Summary
VE
Procurement Considerations
D&B
MC & CM
Two - Stage
Plan & Estimate
Design fees
Other costs
MC DMP
Risk
MC Prelims
Inflation
supply & demand
procurement route
client relationship
market - risk
Unit Rate Considerations
current
exclusive cm inflation
specifics
inclusive subbie on cost
location regional difference
exclusive mc on cost
Structure
internal finishes
FFE
superstructure
Services
substructure
Pre fabrication
facilitating works
Works to existing buildings
External works
Types of Etimate
Functional unit method
Elemental method :
Floor area method
Sources of Data
SPONS
In-house
BCIS
Market test
Cost Estimate
Cost Plan
influences on costs
spec
wall: floor
size
site constraints
shape
site specific features
risk
inflation
ground conditions
Net: Gross
influences
height
building use
no. of units
floor plate efficiency
Wall:Floor
influences
size
storey heights (smaller = better)
shape
ASSUMPTIONS
procurement
design features
prelims/OHP
inflation
typical exclusions
vat
grants
design fees
BENEFITS
town & country planning act
planning obligations negotiated between
local authority and developer
Capital allowances
tax relief on certain assets
forecast of a construction cost at a particular moment (RIBA 1) based on fundamental cost elements
feeds from an estimate, acts as a checking tool as design develops
relationship between NIA & GIA
relationship between EW & GIA