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Does anyone know of any resource which gives some man-hour ballparks for common types of development projects? I realize it's going to vary wildly by framework/language/the skill levels of the developers, but I'm just looking for something that comes within 50% of the mark. Facing a classic build vs buy vs use open source and I don't want to pick the wrong path.

Thanks!

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migrated from stackoverflow.com Oct 31 '11 at 22:49

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closed as not constructive by DKnight, Ryan Hayes, Dan McGrath, David Thornley, ChrisF Dec 2 '11 at 13:55

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Since when does wildly == within 50%? :) –  bzlm Oct 31 '11 at 21:44
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Skill level alone can account for a 10x difference in execution speed (ie 1000%). Any estimates not based on your actual team are next to useless. –  Chris Pitman Oct 31 '11 at 23:57
    
There are no common development projects, If it was common it, would be in a box! –  Morons Dec 1 '11 at 0:54
    
I don't think that this is answerable, this seems to be a couple of different problems rolled together, you might have more luck if you tackle them one at a time with enough detail to get answers, but not so specific that it wouldn't help anyone else. –  DKnight Dec 1 '11 at 16:12
    
Voting to close, as this is like giving a ballpark estimate for building a house. Varies by contractor, location, tools, environments, quality, testing involved, design meetings, and more. –  Ryan Hayes Dec 1 '11 at 16:15
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2 Answers

I'm afraid your question is so non-specific it's going to be impossible for anyone to come with any useful or valid numbers, for exactly the reasons you quote in your question:

it's going to vary wildly by framework/language/the skill levels of the developers

You only have to look at the number of links on these two Wikipedia pages

In terms of general advice: if you are able to use existing code (e.g. Code you've already written, or existing open source tools), then I'd definitely favour that over writing your own.

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Our standing policy is any development project takes 3 weeks. Want to change the label on a field? 3 weeks. Want a fully functional clone of ebay? 3 weeks.

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