How to Read House Plans: Floor Layouts & Symbols

What is a floor plan?

A scale diagram showing a view from above of the relationships between rooms, spaces, walls, and physical features.

What does a scale of 1:100 mean on a house plan?

It means 1 unit of measurement on the paper drawing represents 100 units of the same measurement in real life (e.g. 1cm = 1 meter).

What does a curved arc line indicate near a door on a plan?

It represents the direction and swing path of the door, helping you plan furniture layout without blocking the door swing.

What is a cross-section drawing?

A vertical cut-through view of the building showing the interior heights, slab thicknesses, and foundation details.

What is an elevation drawing?

A flat, 2D view of the building's exterior face (front, rear, side) showing architectural style and window heights.

What is Vastu Shastra in house planning?

An ancient Indian system of architecture that governs room placement based on directions (e.g. kitchen in Southeast) for positive energy.

What is the difference between carpet area and built-up area?

Carpet area is the actual usable floor area inside rooms. Built-up area includes wall thicknesses, balcony spaces, and pillars.

How do I plan ventilation in a floor layout?

Ensure every room has windows on opposite or adjacent walls to promote cross-ventilation and allow natural light.

What symbols represent windows on blue-prints?

Windows are represented by thin double lines or narrow rectangular boxes inserted within thick solid wall lines.

What is a site plan?

A detailed drawing showing the entire property boundary, including the house footprint, roads, pipelines, and garden borders.

Understanding House Plans and Floor Layouts