Free Tools
Room Space Programming Calculator
Build your home's floor-area need from a room list and circulation factor — know the ideal building size before designing or buying land. Free.
Room list
Add or edit rooms with their count and area per room (m²).
Note
An early-planning estimate; final design & permit compliance (PBG) should be done or verified by a competent architect/engineer.
Building floor-area need
Breakdown per room
Got the area? Now the design.
Leave your contact and a Luxury Art architect will turn this space need into an efficient, comfortable floor plan. Free consultation.
Building the space program
Space programming
A list of every room you need with its count and area. It's the first step before an architect draws a plan — ensuring the home fits your family's needs.
Effective vs total area
Effective area = the sum of all room areas. But a home also needs corridors, stairs, and wall thickness. A circulation factor (20–25%) is added so the total building area is realistic.
Check against the land
Once you know the total area, compare it against your land's KDB/KLB limits to ensure the building fits. Use the KDB/KLB Calculator to check.
FAQ
Frequently asked questions
How do I calculate a home's floor-area need?
List every room (bedrooms, kitchen, bathrooms, etc.) with count and area per room, then sum. Add a 20–25% circulation factor for corridors, stairs, and walls. The result estimates the total building area needed.
What's the standard area per room?
As a general guide: master bedroom ~12 m², bedroom ~9 m², bathroom ~3 m², kitchen ~6 m², living/family room ~12 m². You can adjust these in the calculator to your taste and needs.
Why is a circulation factor needed?
Because room areas alone don't count connecting spaces (corridors, stairs) and wall thickness that take up room. Without it, the total is too small and the plan feels cramped. 20–25% is a common range.
Will this definitely fit on my land?
Not necessarily. Total building area is capped by your land's KDB and KLB. After knowing the area need, check the KDB/KLB Calculator whether it fits on one floor or needs multiple.
What's the next step after knowing the area?
Estimate the cost with the Home Build Cost Calculator, check land suitability via KDB/KLB, then have an architect turn it into an efficient plan. A clear space program makes design much faster.
Architecture & Planning
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All free, no signup, and every calculation runs on your own device.
Luxury Art — Architecture & Interior
The planning is set. Now the design.
The calculator here helps you plan space & massing with numbers. Turning it into a beautiful, functional, compliant design takes an architect — that's where Luxury Art works. We handle architecture design, interior design, working drawings, and PBG permit conformity & processing.
Architecture Design
Floor plans, elevations, and building concepts — turning your space needs into a real design.
Interior Design
Space, material, and lighting concepts so every corner feels premium and comfortable to live in.
Complete Working Drawings
Detailed construction drawings that guide builders & contractors — avoiding costly build mistakes.
PBG Conformity & Permit
A design that respects spatial rules (KDB/KLB/GSB) and is ready for PBG permit submission.
The initial consultation is free with no obligation. We help map out your architecture & interior design needs.