Estimating “What Are The Likely Building Costs?”
Before going ahead with any building project, one of the first things everyone wants to know is 'How much will it cost to build?'
Previously this question could only be accurately answered once the Architects plans have been drawn up and a Quantity Surveyor calculated the cost to build from the materials and measurements specified in the plans. This process however, involved you paying for Architects drawings and a Quantity Surveyor before finding out whether the project is within your budget!
Isn't this backwards?
The only other alternative (up until now) has been obtaining an rough estimate based upon the average cost of this type of building per square metre (which are at best is based on the opinion of the surveyor and at worst the national average). Whilst a rough estimates can be done without drawings being available, they are often wildly inaccurate.
Introducing the e -Griffin Construction Cost Calculator
Richard Whidborne founder and MD of e-Griffin Consulting realised the need for an estimating programme that provided a more accurate construction cost estimate without the need for Architect's drawings and one which was based on more than the average cost per m2 multiplied by the floor area.
It has taken several years to perfect but this is exactly what the e-Griffin Construction Cost Calculator can do for any new build project including factories, office blocks, shopping centres, sports pavilions, blocks of flats, detached houses or even a new toilet block.
The Construction Cost Calculator has been developed to take into account significantly more detail by calculating approximate quantities with up-to-date costs, based on some basic information provided by the user.
The beauty of the Calculator is it only takes a few minutes to input sufficient information to obtain a building cost instantly. The input data can also be quickly and easily amended to see how the change would affect the cost. For example, checking how changing from a pitched roof to a flat roof would affect the cost.
So what information does the calculator require?
All the information
you need to accurately know about your proposed building is the following:
The buildings function, site area, gross floor area, building footprint area, storey height, total length of external and internal walls. That's all!
Extensive testing has shown that a Professional Preliminary Estimate using the calculator are accurate to within 10-15% of actual final costs.
The Professional Preliminary Estimate is not designed to replace a detailed approximate estimate based on quantities taken from a detailed Architects drawing, but to provide quick and very accurate cost advice at the conceptual design stage to enable you to make important decisions on the design of your building.
So the statement: "We won't know the cost until we've drawn it", is no longer true.
In fact, you can now accurately design your building around your budget.
This tool will prevent you from wasting your time and money by matching the design of your building to your budget right from the start.
Ball Park Construction Cost Estimate is Also Available
In addition to the Professional Preliminary Estimate there is also a simpler Ball Park Estimate available for those who just want a ball park figure or those who are in a hurry.
Frequently Asked Questions Below are some answers to many of the questions we are regularly asked about the e-Griffin Construction Cost Calculator So what kind of information does the Professional Preliminary Estimate provide? The total predicted cost of the build according to your data Dimensional data calculated for you Ability to project costs forward to future dates for budgeting Costs taking into account Regional variations in prices Ability to select specification for all elements Ability to select quality of internal finishing, fitting and mechanical and electrical services Inclusion of cost of lifts and elevators if applicable How do I amend my estimate?
If you wish to amend an estimate immediately after it has been calculated all you need to do is click on the 'return to input page' link found at the bottom of the page or hit the back button in your browser. All your data will still be on the form so all you need to do is amend it and request another calculation.
If however, you have closed the Calculator you will need to re-enter all your information
Having got an online Profession Preliminary Estimate do I still need to obtain an Approximate Estimate by a Quantity Surveyor from my drawings?
Yes you do. Although the Professional Preliminary Estimate is normally accurate to 10-15% it is not designed to replace the need for an Approximate Estimate taken from Architects plans.
When your drawing s are ready if you would like us to do your Approximate Estimate please
email us and quote your Professional Preliminary Estimate reference number. Can I retrieve my estimate after I have left the site?
Unfortunately not. We advise you to print, download or email to yourself your estimate as soon as it is generated. These options are available on the estimate page.
Where can I download my estimate?
There are links on the estimate results page which will email a copy of your results to you.
Is there a limited number of times I can use the Calculators?
No, none what-so-ever! In fact one way we feel it could be very beneficial is to use the calculator to help you design your building according to your budget. By amending the materials used, the type of roof, size of the building you can see immediately what the effect will be on the construction cost.