Painting a 1,200-square-foot house in Toronto and the Greater Toronto Area (GTA) typically costs between $1,500 and $5,000 for interior painting. This range depends on factors such as the quality of paint, surface preparation, and the number of coats applied.

Factors Influencing Cost:
- Quality of Paint: Higher-quality paints offer better coverage and durability but come at a higher price.
- Surface Preparation: Extensive repairs or preparation, like sanding, patching, or priming, can increase costs.
- Number of Coats: Applying multiple coats, especially when changing colors significantly, may raise the overall expense.
- Labor Costs: Rates can vary based on the complexity of the job and the contractor’s experience.
Additional Considerations:
- Ceilings and Trim: Painting ceilings or intricate trim work can add to the total cost.
- Time of Year: Demand for painting services may fluctuate seasonally, potentially affecting pricing.