Installing energy-efficient upgrades to a manufactured home not only will provide immediate savings but also add long-term value. According to the U.S. Department of Energy, upgrades that can reduce energy costs include putting in energy-efficient windows and doors, adding more insulation, applying weatherstripping and caulk, and installing insulated skirting. It's important to note that manufactured homes are subject to the Manufactured Home Construction and Safety Standards, or “HUD Code,” rather than local building codes.
Because the total price of a manufactured home is relatively low compared to traditional housing options, upgrades that add value should be inexpensive enough to justify the cost. Major renovations, such as adding square footage or moving walls, may be too expensive to net a profitable return when it comes time to sell. Cost-effective fixes, such as painting the interior and exterior, updating plumbing and lighting fixtures, and adding new cabinets and new appliances, are budget-friendly fixes that can make a manufactured home more attractive to buyers.
One of the best ways to either retain or add value to a manufactured home is to maintain it and stay on top of needed repairs. Appraisers and real estate agents that valuate properties, including manufactured homes, factor in the quality of the property when figuring its value. A home that is in tip-top shape generally can command a higher asking price. Additionally, potential buyers tend to prefer a move-in ready home.
Information quoted from http://homeguides.sfgate.com/can-increase-value-mobile-home-55937.html