新华网北京3月15日电(林苗苗)消费者时常要和形形色色的合同打交道，难免碰到一些“霸王条款”。北京市房山区格式条款评审委员会总结了一些买房时常见的“霸王条款”，希望能帮广大消费者维护自身的合法权益。
霸王中介条款：“房主、客户通过本中介以外的渠道，看房行为无效。”
专家解读：这样的条款是无效的。这是中介公司提供居间服务合同时普遍使用的条款，也是中介公司通常所说的防跳单协议。消费者应该具有自主选择服务的权利。比如，看房人可能通过A公司得知房源的基本情况，但选择B公司带领看房，这属于消费者的选择权。
当然，中介公司的合法权益法律也是给予保护的，根据合同法的规定，如果中介公司未最终促成买房合同成立，可以要求当事人支付从事居间活动所支出的必要费用。
霸王装修押金条款：“不交装修押金不给钥匙。”
专家解读：在日常生活中，这是很多购买新房准备入住的人都曾遇到过的，这明显构成侵权。业主与开发商签订的是购房合同，与物业公司签订的是物业服务合同。虽然在现实中业主违规装修的情况经常发生，但不能以不交钥匙强迫业主交纳押金。如果开发商未按期将钥匙交给购房者，购房者可追究其违约责任。
霸王签约条款：“业主、客户及双方近亲属、朋友、同事签字，视为本人签字认可。”
专家解读：合同必须是当事人的真实意思表示，一般只能由当事人本人签字，如果由他人代为办理，则必须有当事人出具的严格、明确的授权，没有委托授权的合同，其效力处于待定状态，必须经被代理人一方追认方为有效。如果被代理人拒绝追认的，合同无效。
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