Just wondering what the cost of an addition, 10 by 15 would be - one story vs 2 story?
You need to check with your municipal development office and get "a development permit". You cannot build anything without permission!! Permits will also cost about $500-$1,000 and must be accompanied by plans (another cost). Then if it is granted you can build anything you want. It all comes down to time and money.
On average expect from $150-$250/sqft.min. for an addition. Whether you do it or not depends on how valuable your property is now and in the future. Dropping $300,000 on a remodel might not make sense as just buying a new house etc
Adding a living space up is cheaper in comparison with building aside if no foundation reinforcement work will be involved
Assuming no restrictions to access You are looking at $50,000 to $100,000 for 2 story
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