Here’s a low-budget interior design cost calculator template with a simple price list structure. You can adapt this into Excel or Google Sheets to quickly get estimates.
Step 1: Define Base Rates (Low Budget)
| Category | Rate per sq ft (₹) | Notes |
|---|---|---|
| Painting & Wall Finish | 20 – 40 | Basic emulsion paint |
| Flooring (tiles, vinyl, laminate) | 50 – 150 | Economy grade materials |
| Lighting & Electrical | 40 – 80 | Standard fixtures |
| Carpentry (wardrobes, cabinets, shelves) | 150 – 400 | Plywood + laminate finish |
| Furniture (beds, sofas, tables) | 100 – 250 | Modular / ready-made |
| Soft Furnishings (curtains, rugs, décor) | 30 – 70 | Budget fabrics & accessories |
| Design Fees | 40 – 100 | Basic design / online consultancy |
| Contingency | 10 % | Safety margin |
Step 2: Formula for Calculator
- Input values
- Total area (sq ft)
- Scope of work (tick categories)
- Material & labour cost = (Rate per sq ft × area) summed across categories
- Design fees = (Total material & labour) × design % OR flat rate
- Contingency = (Material + labour + design) × 10 %
- Total Estimate = Material + labour + design + contingency
Example: 300 sq ft Studio (Low Budget)
- Painting = 300 × 30 = ₹ 9,000
- Flooring = 300 × 80 = ₹ 24,000
- Lighting = 300 × 50 = ₹ 15,000
- Carpentry = 300 × 200 = ₹ 60,000
- Furniture = 300 × 120 = ₹ 36,000
Subtotal = ₹ 1,44,000
Design (₹ 50 / sq ft) = ₹ 15,000
Contingency (10 %) = ₹ 15,900
Total = ~₹ 1,75,000
Step 3: Price List Integration in Calculator
| Category | Area (sq ft) | Rate (₹/sq ft) | Subtotal (₹) |
|---|---|---|---|
| Painting | 300 | 30 | 9,000 |
| Flooring | 300 | 80 | 24,000 |
| Lighting | 300 | 50 | 15,000 |
| Carpentry | 300 | 200 | 60,000 |
| Furniture | 300 | 120 | 36,000 |
| Total (before fees) | – | – | 1,44,000 |
| Design Fees | – | 50 | 15,000 |
| Contingency (10 %) | – | – | 15,900 |
| Grand Total | – | – | 1,74,900 |
Do you want me to build you a ready Excel/Google Sheet calculator with this price list (where you just enter sq ft and tick categories)?
