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Homeowners often struggle to decide which upgrades will offer the biggest property-value boost. Realm helps out by analyzing real estate, tax, zoning and other data to offer recommendations—assessing the impact of different designs, materials and financing options to calculate the return on, say, a kitchen renovation. Realm is free—it makes money via vendor referral fees—but in a service currently offered only in California, for a fee of $199 to $500 (credited toward project costs), an adviser will provide a deeper analysis as well as find architects, designers and more. —Juliette Pearse

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