The eligibility requirements for SBA 504 loans are pretty simple. Your business must be a for-profit organization, must meet current SBA size standards, have a net worth of less than $15 million, not earn more than 1/3 of its income from packaging SBA loans, and have an average net income of $5 million or less after taxes for the preceding two years. Additionally, your business cannot be engaged in any sort of passive or speculative activities. You can find a full list of eligibility requirements and other important information with the SBA here. Note that additional requirements may be placed by CDCs or conventional lenders.