Although it is difficult to replace a physical code book that you can take with you, write in, highlight or otherwise annotate, there is an electronic version of the MN State Building Codes available online.

2020 Minnesota Codes View code Where to purchase Fact sheet
Codes overview: Guide to the State
Building Code
2020 Minnesota Building Code
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2020 Minnesota Residential Code* (English version)
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2020 Minnesota Energy Code
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2020 Minnesota Accessibility Code
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2020 Minnesota Mechanical and Fuel Gas Code
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2015 Minnesota Plumbing Code
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2020 Minnesota Conservation Code for Existing Buildings
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2020 Minnesota Fire Code
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