Interior Design Cost Estimator

This calculator estimates your full-home interior budget using the same method a design studio uses for a first-pass quote: a base rate per square foot, multiplied by your carpet area, then split across the categories that actually make up an interior project. The base formula is Carpet Area (sq ft) × Rate per sq ft, where the rate depends on the finish tier you pick. Essential uses commercial-grade plywood, laminate finishes and standard hardware. Premium moves to BWR/BWP plywood, better laminates and soft-close hardware. Luxury adds acrylic or veneer finishes, branded hardware and more detailed millwork.

Once the base cost is calculated, it is split into eight categories using fixed percentages built from real project data: modular kitchen (26%), wardrobes and storage (20%), living and dining furniture (18%), painting and wall finishes (8%), electrical and plumbing (7%), false ceiling (6%), design and project management (8%), and miscellaneous site supervision (7%). This is why the breakdown changes proportionally whenever you adjust the area or tier, rather than staying fixed.

Add-ons are priced separately and added on top of this base: false ceiling and mood lighting upgrades scale with your area (₹130 per sq ft), while pooja units, foyer units and kitchen upgrades are flat amounts reflecting typical carpentry and installation cost for that single unit. Custom furniture adds 10% to the base cost to reflect bespoke sofa, bed and storage pieces instead of ready-made furniture.

The final number is shown as a range (roughly ±8%) rather than one fixed figure, because no online calculator can account for your exact site condition, electrical load, existing civil work, or the specific brands you choose. What this estimator excludes: structural civil work (breaking walls, plastering, waterproofing), transportation logistics for your specific locality, and GST. These are confirmed during a free, no-obligation site visit, after which we convert this estimate into an itemised, fixed-price quote.

Tip: if you are comparing this estimate against a quote from another designer or contractor, ask them for the same room-wise breakdown shown here (kitchen, wardrobes, false ceiling, electrical) rather than a single lump-sum number. It is the easiest way to spot what has been left out.