一定要拆吗？
-- usually no.
地下室在地面之上的外部水泥地基有一小于一厘米的裂缝（在房子的朝北的角）。 砖没有裂缝，但一些砖（在这个裂缝之上的砖墙上）冻坏了。
-- foundation should be fine, may have to reseal if leak.
想知道允许不允许修理，要推倒盖新的？
-- of course you can repair it, but whether its feasible or not, that is different topic.
空了十几年，木结构会影响到什么？
-- don't underestimate the strength of wood frame structures, they usually can stand for long period of time. but I bet you need to gut it the its bare frame, meaning all new insulation, drywall, ducts, wiring and all mechanical.......
冬天没有开暖气，地下室地基不会受到影响吧？
-- concrete foundation? should be ok if no major crack or crushed in, may need to reseal.
修理要申请吗？
-- of course.
cost???
-- 100-200k range.
