The number of bricks needed to build a house depends on various factors including the size and number of the rooms, the thickness of the walls (half or single brick wall), and the architectural design. However, as per general estimate, a house, with 8-inch (20 cm) thick walls, would require approximately 8 bricks per square foot.

To calculate the number of bricks needed to build a house, you must first calculate the total built-up area of the house and then multiply the total built-up area of the house by 8 (since on average there are 8 bricks per square foot of built-up area of the house) to find the total number of bricks needed.

The built-up area of a 2-room house is around 60 to 75 square meters or 650 to 800 square feet. So total number of bricks needed to build a 2 room house = built up area x 8 = 650 x 8 = 5200 bricks or = 800 x 8 = 6400 bricks. Therefore, a 2-room house with 8″ and 4″ thick walls would require around 5,200 to 6,400 bricks.

The built-up area of a 3-room house is around 90 to 110 square meters or 1,000 to 1,200 square feet. So total number of bricks needed to build a 3 room house = built up area x 8 = 1000 x 8 = 8000 bricks or = 1200 x 8 = 9600 bricks. Therefore, a 3-room house with 8″ and 4″ thick walls would require around 8,000 to 9,600 bricks.

The built-up area of a 4-room house is around 120 to 185 square meters or 1300 to 2000 square feet. So total number of bricks needed to build a 4 room house = built up area x 8 = 1300 x 8 = 10,400 bricks or = 2000 x 8 = 16,000 bricks. Therefore, a 4-room house would require around 10,400 to 16,000 bricks.

The built-up area of a 5-room house is around 180 to 250 square meters or 2000 to 2700 square feet. So total number of bricks needed to build a 5 room house = built up area x 8 = 2000 x 8 = 16000 bricks or = 2700 x 8 = 21,600 bricks. Therefore, a 5-room house would require around 16,000 to 21,600 bricks.

The built-up area of a 6-room house is around 250 to 325 square meters or 2,700 to 3,500 square feet. So total number of bricks needed to build a 6 room house = built up area x 8 = 2700 x 8 = 21,600 bricks or = 2700 x 8 = 28,000 bricks. Therefore, a 6-room house would require around 21,600 to 28,000 bricks.

**Typically, the number of bricks required is calculated based on the total wall area to be covered. For a rough estimate, assuming standard-sized rooms and standard brick dimensions, here’s an approximate range:**

- To build a 2-room house with 8″ and 4″ thick walls, you would need approximately 5,200 to 6,400 bricks.
- To build a 3-room house with 8″ and 4″ thick walls, you would need approximately 8,000 to 9,600 bricks.
- To build a 4-room house with 8″ and 4″ thick walls, you would need approximately 10,400 to 16,000 bricks.
- To build a 5-room house with 8″ and 4″ thick walls, you would need approximately 16,000 to 21,600 bricks.
- To build a 6-room house with 8″ and 4″ thick walls, you would need approximately 21,600 to 28,000 bricks.

**Here’s are table for estimate of bricks required to build a 2-room, 3-room, 4-room, 5-room and 6 room house:**

Nature of House | Built-up area in square feet | Built-up area in square meters | Number of bricks needed |

2-Bedroom house | 650-800 | 60-75 | 5200-6400 |

3-Bedroom house | 1000-1200 | 90-110 | 8000-9600 |

4-Bedroom house | 1300-2000 | 120-185 | 10400-16000 |

5-Bedroom house | 2000-2700 | 180-250 | 16000-21600 |

6-Bedroom house | 2700-3500 | 250-325 | 21600-28000 |

**Conclusions:**

In general, building a 2-room house would require around 5,200 to 6,400 bricks, a 3-room house- around 8,000 to 9,600 bricks, a 4-room house- around 10,400 to 16,000 bricks, a 5-room house- around 16,000 to 21,600 bricks, and a 6-room house- around 21,600 to 28,000 bricks.