Costs & Budgeting
Cost of Painting a 3-Bedroom House in Kenya
Turn a 3-bedroom house into measurable painting scope: how to work out wall area, plus a FinishGrid worked example with stated room sizes and two wall conditions.
- Figures reviewed
- October 2026
- Estimator methodology
- interior-v3
- Quantity methodology
- quantity-v1
“How much does it cost to paint a 3-bedroom house?” is one of the most common painting questions, and a fair one to ask. The difficulty is that “3 bedrooms” describes a layout, not the amount of wall to be painted or the condition it is in.
This guide shows how to turn a 3-bedroom house into measurable painting scope, then works through a FinishGrid example property with its room sizes stated, so you can see exactly where the numbers come from.
Bedrooms describe a layout, not a wall area
One 3-bedroom house may have compact rooms and a short corridor; another may have a large open living and dining area, a long hall and higher walls. Both are “3-bedroom”, but one can have far more wall to paint. The condition of the walls matters just as much: repainting sound walls and painting new rough plaster are very different jobs. How the whole budget is formed is explained in Cost of Painting a House in Kenya.
From “3 bedrooms” to wall area
- List the rooms you want painted. Living and dining areas, each bedroom, halls and corridors, and any other rooms.
- Measure each room's length and width, and the wall height.
- Work out each room's wall area: 2 × (length + width) × wall height.
- Add the rooms together for the total interior wall area.
- Note the wall condition of each area: sound, needing preparation, needing repair, or new plaster.
This is the same room formula the FinishGrid estimator uses. Like the estimator, it does not subtract doors and windows, so the result is approximate and a little generous. A contractor who measures openings separately may arrive at a slightly smaller area. The Paint Calculator lets you enter each room and deduct measured doors and windows.
FinishGrid illustrative 3-bedroom example
| Room | Size (length × width) | Wall area |
|---|---|---|
| Living / dining room | 6 m × 4.5 m | 56.7 m² |
| Bedroom 1 | 4 m × 3.5 m | 40.5 m² |
| Bedroom 2 | 3.5 m × 3 m | 35.1 m² |
| Bedroom 3 | 3 m × 3 m | 32.4 m² |
| Hall / corridor | 6 m × 1.2 m | 38.9 m² |
| Total interior wall area | 203.6 m² |
Included: the walls of the living and dining room, the three bedrooms and the hall or corridor.
Not included: kitchen, bathrooms and toilets, ceilings, doors, frames and trim, exterior walls and repairs. Doors and windows are not subtracted from the wall area.
What the example could cost
The 203.6 m² wall area was run through the FinishGrid estimator for two wall conditions, each with a Standard finish level and one colour.
| Item | Sound repaint | New rough plaster |
|---|---|---|
| Work assumed | Light preparation, two finish coats | Full skimming (19–23 × 25 kg bags of filler), sanding, one preparation coat, two finish coats |
| Materials | KSh 25,000 – 30,000 | KSh 42,300 – 69,500 |
| Labour | KSh 10,100 – 18,100 | KSh 31,500 – 56,900 |
| Expected range | KSh 35,100 – 48,100 | KSh 73,800 – 126,400 |
| Planning figure | About KSh 42,000 | About KSh 100,000 |
These figures are FinishGrid-calculated examples, not a national average. Your property may have a different wall area, surface condition and specification. Ranges are rounded outwards to the nearest KSh 100, and the planning figure is the middle of the range, rounded.
Use your own dimensions
Enter your own wall area, or your room sizes, and the estimator will calculate a planning figure and range for your walls and their condition.
How your house may differ
- Room sizes. Larger rooms, an open-plan living area or an extra room all add wall area.
- Wall height. Higher walls add area in direct proportion, and very high walls may need scaffolding.
- Mixed condition. Some rooms may be sound while others need repairs or skimming. Estimate them separately if they differ.
- Extra scope. Ceilings, doors, trim, kitchens, bathrooms and exterior walls add to the budget.
- Specification and colours. Product choice and the number of colours also change the cost.
Frequently asked questions
How do I measure the wall area of a room?
Measure the room's length, width and wall height, then multiply 2 × (length + width) × height. A room 4 m by 3.5 m with 2.7 m walls has about 40.5 m² of wall.
Should the kitchen and bathrooms be included?
Include any walls you want painted. Kitchens and bathrooms are often partly tiled, so measure only the painted parts, or add them separately.
Does a 3-bedroom apartment cost the same to paint as a 3-bedroom house?
Not necessarily. What matters is the wall area, its condition and the specification, not whether the property is a house or an apartment.
Use your own dimensions
Enter your own wall area, or your room sizes, and the estimator will calculate a planning figure and range for your walls and their condition.