If you own a historic home in Portland, consider yourself lucky. Yes, an older house comes with limitations, because builders and homeowners back then had different ideas about such matters as master bedrooms, closets, and bathrooms; and the original technology definitely isn’t up to today’s standards. But the historical significance, and the downright charm, of an old house are impossible to replicate. So let’s talk about what you can do to make your old home more livable in today’s world without hauling to the landfill everything that makes the house unique.