Two common business valuation methods are asset-based and market-based. In asset valuation, individual assets are valued and combined for a total valuation. This approach considers both going concern (continuing operations) and liquidation (selling all assets) situations. Market valuation looks at data on similar companies that have been sold and their location, similar to what realtors do in setting the price of a home. In both types of valuation, you’ll need the help of a certified business appraiser.