Paco..
Over the years I have used many estimating and accounting packages that say they can do it all. Of course none of them can. The database programs all work on canned unit prices... /sqft, /linft, yd..etc. you still need to put in a local price multiplier. As a specialty contractor I may never do the same project twice. I have not been able to find any estimating software that is anywhere reasonably priced that will work as we need it in non production based manufacturing. I use a spreadsheet for estimating that will allow me to enter all my material costs, labor hours, freight, profit and overhead. I have reference cells that allow me to enter different rates, markups and P & O percentages, so that I can vary the estimate price with current conditions. To succeed, you MUST mark up all materials, you MUST make a profit against your labor costs AND you MUST have a charge for your overhead costs. And if you want to be here next year you MUST include a profit figure. Figuring out what these charges and percentages are is the hard part. Overhead is a product of time. A job that takes 6 months needs to cover 1/2 of your total years fixed costs. One that takes a week should be 1/50th etc. I like to enter all items in an estimate as my real cost. Just what they cost me. Shipping etc is cost. Labor is more complicated to develop a cost when you are self employed. Lets say your prevailing rate is $50/hr and you are shooting for a 25% profit margin. Your building, utilities etc. (overhead) is $12,000/yr. Your labor "cost" for estimating purposes would be $50/1.25 =$40 less overhead. Which if you are a one man show would be..$12,000/12 mo =$1,000/mo, by 20 working days = $50 per day /8hrs=$6.25/hr Which gives you a bare cost of $33.75 for estimating purposes. Here would be how I do it: (no details)
Plywood, lumber (itemized on bid) $350.00
Required Tooling $80.00
Fasteners $12.00
Refinish Mtls $65.00
Sub Tot Mtls $507.00
Labor Setup,cut assemble etc(itemized)
24hrs @ $33.75/hr $810.00
ShopBot 1.75 hrs @ $85.00/hr $148.75
Shipping, postage etc $8.00
Misc Shop mtls, rags etc (not itemized) $4.50
ESTIMATE COST $1,985.25
Overhead 24@ $6.25 $150.00
SUBTOTAL $2,235.25
Profit @ 25% $533.81
Estimate total $2,769.06
Because all of the rates and percentages are in cells that can be modified, you can make changes depending on how busy you are. Or give a discount to a favored client. There ya go! thats just my opinion, and I could be wrong. Just remember one thing.... It is much better to be sorry that you didn't get the job, than to be sorry that you did!!!!
Gary