In my experience, I have used one or two coats of Benjamin Moore Fresh Start registered All Purpose 100% Acrylic Primer 023/N023.
- When I remodelled a dark brown room with permanent pen and crayon marks on the walls into a light blue and lavender childs room, this product worked great!
- This primer will give you a bright white base to add color over without it appearing dingy or discolored.
I think it may cost a little bit more than other primers, but if you want the change done quickly or if it is DIY, then it is worth the extra cost to not have to apply multiple coats of primer.
The cleanup will be all water based. Try it on one room first, of course, or do a large test patch before ordering all the paint.
Follow with a zero VOC Natura registered Interior Paint in an eggshell finish in all rooms except the trim, kitchen and bathroom--which should be semi gloss.