If you're thinking about home improvement, remodeling, or putting on an addition, adding a bath or perhaps just a skylignt - read on. It might help you make (or unmake) the decision. You must always consider resale value when spending money on your home, unless it is something you must have specifically for you and then you must be prepared to absorb some of the cost and chaulk it up to the pleasure of your enjoyment.

Remodeled Kitchen
A kitchen update can reward a seller with a sizable payback. Just remember, though, splurging on fancy finishing materials or sophisticated equipment may cut into your profit. Stay neutral.
Expected return at resale: 150%

Revitalized Lawn & Garden
A verdant lawn and a modest but colorful flowerbed will entice potentials and increase curb appeal. The few hundred dollars invested may yield several thousands in profit.
Expected return at resale 100%

Fireplace
Especially if it's energy efficient, such as a gas-powered model, a fireplace hold the promise of cozy family gatherings around the warmth of the hearth.
Expected return at resale: 100%

Second Bath
All it takes is a simple 5 x 9 foot second bath to make mornings more civilized for most families. This is not an "extra" anymore, but rather a must have for buyers.
Expected return at resale: 90%

Room Addition
For the most attractive return on your investment dollars later, the added room should be a family room or an additional bedroom.
Expected return at resale: 80%

Remodeled Bath
A master bath is on many buyers' wish lists, so invest here. If you have only one bath, install two sinks or a double vanity to handle the morning crowd.
Expected return: 60 to 80%

Deck
Outdoor living space is a hugely desireable asset no matter where you live. No-maintenance decking material leaves lots more leisure time, too. If you are putting on a deck to sell the house, keep to the basics.
Expected return: 70%

Finished Basement
This is a great way to gain added living space without building a costly addition. If the basement has access to the outdoors (a walkout), the project becomes more valuable. Note, a finished basement will not be counted by an appraiser as an additional room in most cases.
Expected return: 40%

New Windows and Doors
Buyers appreciate changes that improve the look of a house, so handsome French doors, for example, may be a plus. Energy efficient units are an attractive amenity with resale appeal. If your windows and doors are really worn, then their replacement become almost mandatory. Again, shop around and secure a cost-efficient job.
Expected return: 35%

Swimming Pool/Hot Tub/Sauna
This is a personal preference luxury item which may or may not affect resale profit.
Expected return: 0%