Estimating interior design fees depends on several factors, such as project size, scope, designer expertise, and pricing model. Here’s a step-by-step guide to help you calculate design costs effectively:

Table of Contents

Step 1: Identify the Pricing Model

Interior designers charge fees in different ways. Choose the most relevant model based on your project:

Per Square Foot Rate
- Residential: ₹100 – ₹500 per sq. ft.
- Luxury Interiors: ₹1,000+ per sq. ft.
- Commercial: ₹200 – ₹800 per sq. ft.
Fixed Design Fee
- Small Apartment (1BHK/2BHK): ₹50,000 – ₹2,00,000
- Larger Homes (3BHK/4BHK): ₹2,00,000 – ₹10,00,000
- Commercial Spaces: ₹1,00,000 – ₹20,00,000+
Hourly Consultation Fee
- ₹500 – ₹5,000 per hour, depending on the designer’s experience.
Percentage of Total Project Cost
- Designers charge 5% – 20% of the total project budget.
- If a project costs ₹10,00,000, the design fee could be ₹50,000 – ₹2,00,000.
Turnkey Project Costing
- Covers everything (design, execution, materials, labor) under one fixed price.
- Prices depend on scope, material selection, and finishes.

Step 2: Determine the Scope of Work

Full-Service Design: Includes concept development, 3D visualization, material selection, project management, and execution.
Partial Design Services: Covers only design and consultation, excluding execution.

Step 3: Calculate Costs Based on Requirements

Use the formula:
Total Design Fee = (Space Size × Rate per Sq. Ft.) + Consultation/Project Management Fees

For example:

A 1,000 sq. ft. home with a per sq. ft. rate of ₹300 → ₹3,00,000
Plus a 10% project management fee → ₹30,000
Estimated Total Cost: ₹3,30,000

Step 4: Add Customization & Additional Charges

Custom Furniture & Decor: Adds 10% – 30% extra.
Premium Materials: High-end materials like marble, veneer, or imported fittings increase costs.
Structural Changes: Modifications to walls, plumbing, or electrical setups require additional budgeting.

Step 5: Get Multiple Quotes & Compare

Consult 2–3 interior designers for competitive pricing.
Check their portfolio and client reviews before making a decision.

Would you like a cost breakdown for a specific project? 😊