Sooner or later, every residential studio in India gets the call: a client's company needs an office done, a friend is opening a clinic, a builder wants a sales lounge. Commercial work is the natural second act for a design studio, the tickets are bigger, the briefs are more rational, and one happy business client repeats in a way families rarely do. But commercial projects run on different physics from homes, different contracts, different money, different approvals, and studios that carry residential habits into B2B work get hurt in very predictable ways. So let me map the commercial landscape properly: what changes, what the phases look like, and where the money points sit.
What counts as commercial, and why the category matters
Commercial interiors in India covers offices, retail stores, restaurants and cafes, clinics and hospitals, hotels and guest houses, showrooms, sales galleries, gyms, salons and co-working spaces. Each has its own playbook, offices run on headcount math, retail runs on sales per square foot, F&B runs on kitchen logistics, but they share one economic fact that changes everything: a commercial space earns money, and every week it isn't open is a week of lost revenue the client can calculate exactly. That's why commercial timelines are hard commitments, and why the whole engagement is more contractual than residential work.
The client is also a different animal. You're not designing for taste, you're designing for a business case, and your counterparty is an organisation: a founder plus an admin head plus an accounts team plus sometimes a project management consultant. Decisions arrive slower but stick better, and paperwork discipline is rewarded rather than tolerated.
The commercial phase map
| Phase | What happens | The gate |
|---|---|---|
| Requirement study | Business needs, headcounts or covers, compliance needs, budget band | Signed requirement document |
| Concept and test fit | Layout options, mood board, area statement | Concept sign-off by the deciding committee |
| Design development | Materials, MEP coordination, FF&E package | Design freeze, in writing |
| BOQ, quote, work order | Line-item bill of quantities, commercial terms | Work order or LOI issued |
| Statutory and landlord approvals | Fire NOC, landlord permissions, licences | Permits in hand |
| Execution | Milestone-driven site work, weekly certification | Signed weekly milestones |
| Handover | Snag closure, documents, training | Handover certificate |
Two structural differences from residential work hide in that table. The work order: commercial clients engage through a formal work order or contract, and you should never mobilise on a verbal yes, however friendly the founder. And weekly certification: progress gets signed weekly by the client's representative, which feels bureaucratic until the first payment dispute it prevents.
The money physics: TDS, terms and retention
Here's where residential habits cost real money. A family pays your invoice when they pay it. A company pays through an accounts process, and you need to understand four things about it before you quote.
TDS is deducted at source. Corporate clients deduct tax (typically 2% under 194C or 10% under 194J depending on how your scope is classified) before paying you, and you claim it back through your return. Price knowing this, and reconcile TDS certificates quarterly.
Payment terms are real. "Net 30" means your invoice enters a queue, and an invoice with any error re-enters the queue from the back. GST-clean invoicing the first time, correct GSTIN, SAC and HSN lines, place of supply, is a cash-flow weapon in commercial work, not an accounting nicety.
Retention exists. Commercial contracts commonly hold 5% for a defect liability period of six to twelve months after handover. Track it, invoice it when due, and don't silently gift it, an astonishing number of studios simply forget their retention money.
Milestone certification drives payment. Money releases against certified progress, so your site documentation, photos, measured progress, signed milestone sheets, is literally your billing engine.
Compliance is part of the design, not after it
Commercial spaces answer to codes residential work barely touches: fire NOCs with exit widths and travel distances, accessibility requirements, sanitation ratios for staff, ventilation standards, and sector-specific layers, clinical spaces have their own norms, F&B has FSSAI, and mall sites add landlord fit-out manuals. The professional move is designing to code from day one and keeping a compliance register on the project plan with owners and dates, because in commercial work a beautiful space that can't get its fire NOC is worth nothing, and the client's memory of the delay will attach to you regardless of whose filing was late.
Running the engagement like an organisation
Because the client is an organisation, your studio has to present as one, and this is honestly where small studios win or lose commercial work more than on design. What that looks like in practice: a single project record where specs, drawings, approvals, invoices and site updates live, one weekly report in a fixed format, approvals collected digitally with timestamps from named decision-makers, and a clean audit trail from the approved quote to every invoice raised. Give the client's admin, accounts and founder their own portal access (unlimited free client logins mean this costs nothing), and you eliminate the relay-race of forwarded PDFs that makes studios look small.
This is a big part of why I push one connected system so hard for studios stepping into B2B: the coordination overhead of commercial work is exactly what scattered tools amplify. Designa runs the whole chain, requirement to specs to portal approvals to quote to GST invoice to Razorpay collection to POs tracked to delivery to site updates and snag lists, in one workspace, at one flat founding price for the whole studio, billed in rupees, and if you're evaluating options with commercial work in mind, my buyer's guide for studio software in India covers the selection checklist properly.
Key takeaways
- Never mobilise without a work order, however warm the relationship
- Price for TDS, 30-to-45 day terms and 5% retention, then invoice GST-clean the first time
- Weekly certified milestones are your billing engine, document the site like it pays you, because it does
- Keep a compliance register from day one, the fire NOC is part of the design
- Present as an organisation: one project record, fixed-format reporting, timestamped approvals
Where to go deeper
This post is the map, and the territory is covered type by type across the blog: the residential foundation most studios come from is in an apartment interior design workflow, renovation-led commercial conversions share the discovery discipline of managing a home renovation project, the universal gate list lives in the complete interior project checklist, and the calendar mechanics are in the project timeline template.
Frequently asked questions
How is commercial interior work different from residential in India?
The engagement is contractual (work orders, milestone certification, retention), payments run through accounts processes with TDS and 30-to-45 day terms, compliance like fire NOCs shapes the design itself, and timelines are hard commitments because the space earns revenue.
What is retention money in commercial interior contracts?
A portion, commonly 5%, held back after handover through a defect liability period of six to twelve months, released if defects are resolved. Track it and invoice it when due.
Do commercial clients deduct TDS on interior design work?
Yes. Depending on how the scope is classified, expect 2% (works contracts under 194C) or 10% (professional fees under 194J) deducted at source, claimable through your tax return. Reconcile TDS certificates quarterly.
What should a studio's first commercial project be?
Something adjacent to your residential strength and modest in compliance load, a small office or studio-clinic rather than a restaurant or hospital. Bring full paperwork discipline from day one and let the project teach you the corporate payment rhythm.
Commercial work rewards exactly the discipline that residential work merely appreciates, so if your studio has the workflow muscle, the step up is very achievable. To see the whole commercial chain, specs, approvals, invoices, POs and site records, running in one workspace, spend some time in the demo at demo.designa.work, and when you're ready, the founding offer is at go.designa.work.