The cost to paint a room will vary based on the size of the room, the type of paint you select, any ceiling or trim work needed, and any repairs needed. If no repairs or other additional work is needed, painting a room with contractor-grade paint could range from $1 to $2 per square foot, including materials. Selecting a luxury paint (some cost more than $100 per gallon) will certainly increase your house painting costs. Here are some additional examples of average house painting costs, per room:
Buying a can of premium paint, then bait and switch over to low-line products? Again, complete nonsense. Think about it for a moment; the Painter needs 5 gallons of wall finish. So, he buys one can of premium and the rest 'cheap'? How is he going to hide the 4 other gallons? What's he going to hide it in??? He only has ONE gallon of premium. It's not as though he's going to keep older can labels, they would be covered in paint of a different colour.
Complimentary colors are not the end all of choosing paint colors. A popular trend these days is the utilization of adjacent colors on the color wheel for accents and multi-toned surfaces. While some color enthusiasts suggest the use of up to 5 colors (and by some we mean very few), it’s not uncommon for 2 adjacent colors to be chosen for a single wall. The way you would choose this is by picking the color you want to be primary on your wall, and go either left or right on the same value ring. Exceptions do exist here, however. You should avoid going from purple to red because, despite the fact that this is a ‘wheel,’ it actually represents the visible portion of the spectrum of light that we can see.

Some proposals simply say to paint the walls and ceiling and never specify the number of coats to be applied. If the colors are similar enough, it's possible to get away with one coat of paint and not discount your pricing. No matter how hard you try, tiny, pin-sized air holes will pop exposing the original walls. This may not bother you if you can't notice it, but principally speaking you should have paid your painter less for the work.
As the homeowner, I've done all of our interior and most of our painting. Whenever you paint, preparation is truly key. Anyone can slap on a coat of paint and call it done. If you want something that looks good and lasts, take the time to clean the walls (also if there is a smoker in the house, nicotine sticks to paint), fill any holes, and take care of any imperfections in the surface. Also, tape off ceilings, door and window frames, and any other place you don't want paint to land. Depending on the size of the room and the number of doors and windows, it might take you 2-3 times the amount of time to prep as to paint. I've never had a contractor paint in my home, but if I did, the first question I'd ask is for a detailed list of how much preparation they would do. If it wouldn't be at least as thorough as mine, I wouldn't hire them. Also, ask about priming before painting, particularly if you're going to cover a darker color with a lighter one. There are now all in one primer/finish paints. If this is not going to be used, ask to have the primer tinted as close to the finish color as you can get.

As you walk through your lighted rooms (preferably day light) see if the new coat has light spots showing the precious paint. This is call "bleeding through". This means that there's only one coat of paint or the paint was diluted or the trasition of colors were from light to dark (or the other way around) and primer was not use or the painter is inexperienced.

Primer:  While technically not paint or a finish, the use of primer is crucial in interior painting. Failing to use primer on a porous surface, such as wood or concrete, can lead to imperfect paint coatings that could end up peeling away from the walls. Primer is also a must if covering up a darker color, as it will take fewer layers to cover the old paint.

To get basic measurements, measure the length and width of each wall you want to paint in inches. Multiply the length and height together, and divide by 144. This will give you the square footage for each wall. A gallon of paint typically covers around 400 square feet. In some cases, you may need a primer 2 first, then a single coat of paint, meaning that you may need one gallon of primer and one gallon of paint to cover 400 square feet. However, if the wall requires multiple coats, this will increase the total amount of square footage required, and therefore the amount of paint.
So sad that Angie's List requires the contractor be notified!! They have lost me as a client. If I'm dissatisfied and want to give an "F" rating (question/workers...I SHOULD NOT be intimidated into passing up an opportunity to explain my experience! There is NO WAY my contractor got an Aplus rating from over five hundred someone was lying....yet I can't report that without the contractor knowing it? REALLY?
Cleaning oil-based paints can be a challenge. Sometimes it’s best to let your tools dry and throw them away. However, if you plan on saving your tools you’ll need mineral spirits, paint thinner or lacquer thinner, a cleaning comb or brush and two metal containers or glass jars with lids. One container will be for clean solvent and the other for dirty solvent.

Modern Masters 1 gal. Copper Penny Metallic Interior Modern Masters 1 gal. Copper Penny Metallic Interior Paint can be used to create a high-end decorative finish in a variety of circumstances. Use it on a small accent piece or large architectural specification. Durable and long lasting for commercial application yet easy enough for do-it-yourself projects. Special formula contains ...  More + Product Details Close
Painting interior walls is a task better accomplished with foam rollers, because they are easy to use and can evenly cover large surface areas quickly. Foam rollers and brushes should never be overloaded with paint, as it can create drips, uneven coverage and can take longer to dry. It’s easy to get frustrated when the paint is fresh and does not look like a photo from the paint catalog, but remember: that’s something that usually happens after the second coat dries.

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