If all the business was done, and any agreements signed, as the S-corp rather than as you personally, then you would generally be immune to liability from business dealings. The exceptions would generally be if (1) there was some personal guaranty of the work; (2) if damage is done, or economic loss caused, negligently or intentionally by your husband--i.e. he's the one who personally did the repairs or works--then he potentially could be personally sued as the tortfeasor (the one causing the harm), for his direct role in causing it; or (3) there is some fraud, since in many cases of fraud, especially consummer fraud, corporate officers could be held personally liable.