Research the original exterior and interior colors of your bungalow if it has been repainted throughout the years. Look for historical photos through your local library or historical society, or research similar homes that were built in your area. Attempt to recreate the original paint palette and remove any unsightly additions, such as closed-in porches.
Reconfigure the interior of your bungalow. Most bungalows are very small, and therefore contain small rooms. You might consider combining your kitchen and living room areas to maximize space. Consult with an engineer first to determine which walls are structural and which can be removed.
Upgrade your home's envelope and mechanical systems to be more energy efficient. Replace old windows with new, but historically accurate insulated windows. Caulk around doors and other openings to prevent leaks. Add extra insulation to your bungalow's roof. Replace your old water heater, furnace and air conditioner with a new, Energy Star-rated model to decrease your monthly heating and cooling costs.
Remodel the kitchen and baths. These rooms are often the most outdated rooms in a house, and it is likely your bungalow's kitchen and bathrooms have been remodeled in the 1960s or '70s and feature less-than-desirable fixtures and finishes. Go the modern route and add stainless steel appliances, granite counters and modern tile. Or remodel your bathroom to its original condition by selecting period plumbing fixtures.