|Posted on Tuesday, August 08, 2006 - 07:30 pm: |
I have a construction manager who has been lead to believe that the AIA has published a listing for recommended construction cost contingency percentages based on types of projects.
Has anyone seen a document like this? I have a AIA Handbook that states 5%, or higher for renovation projects. (12th edition, Vol 2, section 3.73, page 694).
Is there another source of this information that I can reference?
(posted anonymously because sometimes 4Specs is a little too popular and this is an ongoing project).
|Anne Whitacre, FCSI CCS|
Post Number: 375
|Posted on Tuesday, August 08, 2006 - 08:37 pm: |
the American Society of Professional Estimators used to recommend 7% for renovations; 5% for new construction. (I know this because I had a business partner who was an estimator and I heard that drill over the phone a lot).
|Frederick L. Jang, RA, CSI|
Post Number: 3
|Posted on Wednesday, August 09, 2006 - 11:46 am: |
Several years ago when the rising steel prices ran havoc over the construction industry, GSA (the federal government’s largest landlord) approached the Office of Management and Budget (OMB) to increase the construction contingency rates. Starting in FY 2007 (the federal government starts its fiscal year in October), new construction projects will budget a 7% construction contingency and 10% for R&A projects.
Of course this is a trickle down effect to the state and local governments. It may take a year or two before additional funding is given to projects with federal funds. In the mean time we have to bear the rising double digit raising materials increase that is impacting the award of our projects! Many Contractors and Construction Managers are recommending that Owners and Developers factor in a 5% to 10% “materials contingency” to account for future spikes to construction materials.
Post Number: 1
|Posted on Wednesday, August 09, 2006 - 07:33 pm: |
I haven't ever seen any "official" construction contingency recommendations (not to say there isn't any out there). As a former estimator for an architectural cost consulting firm, I would say that percentages should be project specific, each evaluated for its own complexity and risk -- with special attention given for difficult site conditions (poor soils, significant grading issues). Publicly funded projects should probably be higher, in anticipation of a greater number of change orders. 5% for new and 7% for renovation may be typical, but on the lower end. Recommend 7% and 10%.
|Tobin Oruch, CDT|
Post Number: 31
|Posted on Thursday, August 10, 2006 - 01:48 pm: |
Another gov't input is the DOE. Since many of their projects are large, complex, new technology, or remediation of uncharacterized brownfields, their older ('97) guide on contingency reflects 3-8% for typical fixed price construction but as high as 50% or more for entire project including design, land acquisition, etc. Interesting to skim through.
|Posted on Thursday, August 10, 2006 - 01:52 pm: |
This is all great info. I value your posts and input.
Mr. Jang's information is right on target with what I am looking for. Thanks everyone!