Oh, I thought you already knew, but I can explain:
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Destroying structures feels awkward and unresponsive. If I recall correctly, you can't even cancel destruction.
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Depending on RNG to get turrets makes most runs impossible to beat. Instead, you should just buy turrets separately from the tiles.
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A 3-tile distance to the house is too small, and because of RNG, most runs will end up with only one possible path. Also, many tiles are just impossible to place — in a complete game, all tiles should be usable at any given instance, or simply don’t give me tiles that don’t fit.
Overall, there are many quality-of-life improvements that can be made, but the game is charming as is.
ps: I played your game a couple days ago so please forgive me if my answer isn't entirely accurate.