Before committing to a full renovation, there are a number of lower-cost changes that make a noticeable difference.
Paint is still the best value
A fresh coat of paint, especially on trim and doors, updates a room for relatively little money.
Swap hardware
New cabinet handles, light switch covers, and curtain rods are inexpensive updates that change the feel of a room quickly.
Rearrange before you buy
Try a new furniture layout with what you already own before purchasing anything new — you may find you did not need new furniture at all.