Building my Chicken Coop / Is it cost effective to have chickens?

I've been working on my chicken house lately. I am almost there.

Things that I still need to do:

1. Paint the coop.
2. Build an automatic chicken door that closes as opens by its self.
3. Install the chicken wire.
4. Install the feed container.
5. Install a automatic water system.
6. Put shingles on the roof.
7. Buy the baby chicks. (I'm thinking about 12 birds)
8. Need to buy a bale of hay.

This might seem like a lot to still get done but I can manage. I have spent a total of $12 on this coop. I found all the wood I needed from construction site dumpsters. I even pulled the nails from dumpster wood. 

Want to see my coop! Watch the video.

Coop Design:

• 6 foot by 6 foot (36 sqf. of space).
• Side roofs are hinged for easy opening.
• designed for easy clean out of coop.
• 4 lay boxes.
• Will be raised off the ground.
• I will place about 6 inches of hay on the floor of the coop.
• This is for easy cleanup and for enhanced composting of the chicken waste.
• This means I will need to clean the coop less often.

Return on Investment: Its worth it:)

• Last year when I had chickens the average cost per dozen eggs was about 90 cents. I will let you know how much chicken eggs cost me this time around with more chickens.
• ROI Calculation:
• Cost per dozen eggs after egg production:
• Total weekly cost / number of eggs produced * 12
• ROI over the course of the First 12 Months
• When Looking at Egg Production as a "Cash-flow" you can use the IRR function in excel.
• Real Briefly explained: You take how much the coop and chickens cost and how much the net value of the egg production is over the first 12 months. For me I get a rate of return of 0% but the second year I see returns of 9%. That's better than the stock market on a good day. I am expecting to spend around $75 bucks on my coop and not seeing any eggs until fall. The average price for eggs in my area is about $3 per dozen.

Calculate the Return on Investment: