Cost Estimating Per Design Phase

Site Zoning Vignette and Multiple Choice

Cost Estimating Per Design Phase

Postby waywong » Mon Sep 26, 2016 5:28 am

There seems to be lots of confusion when it comes to methods of cost estimating. I've been experiencing different wording when it comes to AHPP, Jenny's and Carolines Notes.

I just wanted to verify that my information is correct:

Programming- Unit Cost System

Schematic Design-Building Subsystem

Design Development-Component Cost System

Construction Documents-Composite Unit/ Parameter Method

Thanks!
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Re: Cost Estimating Per Design Phase

Postby Joseluis778 » Thu Sep 29, 2016 9:16 pm

there is no cost estimating for Construction Documents phase on the Architect's side. That would be done in the bid by the Contractors.
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Re: Cost Estimating Per Design Phase

Postby Coach » Fri Sep 30, 2016 1:56 pm

Joseluis778 wrote:there is no cost estimating for Construction Documents phase on the Architect's side. That would be done in the bid by the Contractors.

Not true. See B101.3.4.4.
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Re: Cost Estimating Per Design Phase

Postby Joseluis778 » Fri Sep 30, 2016 2:22 pm

Coach wrote:
Joseluis778 wrote:there is no cost estimating for Construction Documents phase on the Architect's side. That would be done in the bid by the Contractors.

Not true. See B101.3.4.4.


Thank you Coach.
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Re: Cost Estimating Per Design Phase

Postby waywong » Fri Sep 30, 2016 4:49 pm

Coach wrote:
Joseluis778 wrote:there is no cost estimating for Construction Documents phase on the Architect's side. That would be done in the bid by the Contractors.

Not true. See B101.3.4.4.


Coach, would area/ sq ft cost estimate also apply for schematic design as well?
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Re: Cost Estimating Per Design Phase

Postby sharen » Wed Jun 13, 2018 4:19 pm

on one of the AIA documents indicates that architect requires to provide estimate for all phases (B101); but also another section says that if
owner requires detail estimate its additional service.
Another note indicates that for different phases must be different type of cost estimating
-Unit cost
-building system
- component subsystem
- composite unit /parameter Method
as was mentioned by another student.

but these methods are detail estimates except for unit cost. isn't it? Please advise. Thanks,
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Re: Cost Estimating Per Design Phase

Postby Coach » Wed Jun 13, 2018 4:48 pm

sharen wrote:Another note indicates that for different phases must be different type of cost estimating

No such provision in the contract.

but these methods are detail estimates except for unit cost. isn't it?

No. They are conceptual. A detailed estimate is akin to what a GC would do.
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