The Complete Interior Project Checklist (Start to Finish)

Every studio owner has lived this nightmare. The client picks a laminate in the meeting, three weeks later the carpenter installs a different shade, and nobody can remember who approved what. Or the marble arrives on site while the plumbing is still being chased into the wall. Or you send the final invoice and the client says "but we never agreed to that changed vanity."

None of these are talent problems. They are process problems. A project has a hundred moving parts, and the parts that slip are almost never the design ones. They are the boring ones. The sign-off nobody chased. The spec that was decided verbally. The PO that went out with the wrong dimensions.

So here is a real, usable checklist. Enquiry to handover. Print it, adapt it, make it your studio's default. I've grouped it into the six stages every interior or architecture project actually passes through, whether it's a 2BHK in Pune or a boutique office in Gurgaon.

Stage 1: Enquiry and qualification

This is where most studios lose money before the project even starts, by saying yes to the wrong client or scoping the wrong project.

• Log the enquiry the moment it comes in, with source (Instagram, referral, walk-in, JustDial). You need to know later which channels actually pay.
• Capture the basics: property type, carpet area, location, possession status, rough timeline.
• Ask the budget question early and directly. A client with a 12 lakh budget and a 40 lakh Pinterest board is a headache you can decline politely now.
• Note the decision-makers. Is it the husband, the wife, the father-in-law paying, or all three? Get this wrong and every approval takes twice as long.
• Do a first call or site visit and decide: is this a fit? Not every enquiry deserves a proposal.
• Send a clear scope-and-fee proposal. Design fee, what's included, what's extra, payment stages.

If you're doing this in WhatsApp and a Google Sheet, enquiries fall through the cracks the week you get busy. That's exactly the week you can't afford it.

Stage 2: Onboarding and the paper trail

You've won the project. Now set it up so it can't go sideways. This stage is short but it decides whether the next four months are calm or chaotic.

• Signed agreement with scope, fee, timeline, and a clear change-order clause. Put the change-order clause in writing now, because you will need it later and you cannot add it after a fight.
• Advance collected. Don't start drawing until the first payment lands.
• Collect the site inputs: measured drawings or a proper site survey, electrical points, plumbing lines, structural constraints, society NOC rules for renovation.
• Understand the client properly: how they live, who uses which room, storage habits, that one non-negotiable ("my saree cupboard must fit 200 sarees").
• Set the communication rule. One channel for decisions, one point of contact on your side. If every junior WhatsApps the client directly, you'll have chaos.

I've written a full breakdown of this stage in the New Client Onboarding Checklist for Interior Studios, because getting the first two weeks right removes half your future problems. The studios that onboard sloppily are the same ones firefighting at handover.

Stage 3: Design development and room-by-room specs

This is the heart of the project and the place where "we'll decide on site" quietly destroys margins. Every finish, every fitting, every dimension needs to be pinned down and approved before it goes to procurement.

• Concept and mood boards per space. Get the direction approved before you detail anything.
• Layouts, furniture plans, and 3D views where the client needs to see it.
• Room-by-room FF&E specs. This is the document that saves you. Every item, every finish, every material, with codes, quantities and dimensions.

Let me be specific about what a real spec line looks like, because vague specs are where money leaks. Not "kitchen laminate." Instead: base unit shutters, Merino 5678 SF matte, 18mm BWP ply carcass, soft-close hinges, 12 running feet, client-approved on 14 March. That level of detail is boring to write and priceless when the carpenter is standing on site asking questions.

• Finishes schedule for the whole home: flooring, wall finishes, ceiling, paint shades with exact codes.
• Electrical and plumbing layouts finalised and marked, because these get frozen into the walls and cannot be undone cheaply.
• Sample approvals. Physical samples of laminates, tiles, fabrics, stone. Photos on WhatsApp lie about colour. Get the real sample approved.

If your specs live in ten different WhatsApp threads and a couple of PDFs, your site team is guessing. I've laid out how to structure these so clients actually understand them in How to Build Room-by-Room FF&E Specs Clients Understand. A spec the client understood is a spec the client can't dispute later.

Stage 4: Quotation, approval and invoicing

The design is locked. Now turn it into money, cleanly, with GST done right and approvals on record.

• Convert the approved specs into a detailed quote. Line items, not lump sums. Clients trust "12 rft of wardrobe at X per rft" far more than "bedroom work: 3 lakh."
• GST handled correctly. 18 percent on most interior work, input credit where it applies, HSN codes on the items. Get your accountant's rule and apply it consistently.
• Client approves the quote in writing. Not a thumbs-up emoji. An actual recorded sign-off you can point to.
• Convert approved quotes into proper GST invoices with your GSTIN, invoice number series, and payment terms.
• Collect payments in stages tied to milestones: advance, on material procurement, on installation, on handover. Never let the client's payments fall behind your outflow to vendors.
• Use online collection. A Razorpay link in the invoice gets paid faster than "please transfer to our account" with bank details typed out.

The gap between the approved spec and the invoice is where scope creep hides. If the client added a false ceiling in week six and it never made it into a revised quote, you're absorbing that cost. A connected system where the spec, the quote and the invoice are the same living record kills that leak.

Stage 5: Procurement, PO to delivery

Design is intent. Procurement is reality. This is where timelines actually break, and it's the least glamorous, most under-managed part of most studios.

• Raise proper purchase orders to each vendor. PO number, exact specs, quantity, agreed price, delivery date, delivery address.
• Track every PO: raised, confirmed by vendor, dispatched, delivered, quality-checked on site.
• Match deliveries against the PO. Wrong shade, wrong dimension, short quantity, damaged in transit, catch it at the gate, not after installation.
• Sequence deliveries with the site schedule. Flooring before furniture, plumbing fixtures before the false ceiling closes. A ten-lakh sofa sitting in a dusty half-built flat for a month is a real, avoidable loss.
• Keep a running material ledger per project. What was ordered, what arrived, what's pending, what was paid. When the client asks "where's my dining table," you have an answer in ten seconds.

Procurement chaos is the single biggest reason projects slip past deadline in Indian studios. I've written the full playbook in How to Run Procurement From PO to Delivery Without Chaos. Read it if your vendors and your site are constantly out of sync.

Stage 6: Installation, snagging and handover

The finish line. Get this stage wrong and a beautiful project earns you a bad review and a delayed final payment.

• Site supervision schedule. Who's checking the work, how often, against which drawing.
• Installation as per approved drawings and specs. Every deviation gets flagged and approved, not silently accepted.
• Snag list. Walk the whole space, every room, and list every defect: scratched shutter, misaligned handle, paint touch-up, loose fitting.
• Close every snag and re-inspect. A snag list you made but didn't close is just a document of your problems.
• Client walkthrough and sign-off on completion.
• Handover kit: warranty cards, appliance manuals, paint codes for future touch-ups, care instructions for stone and wood, vendor contacts.
• Collect the final payment against the completed handover. Don't hand over the keys and then chase the last 10 percent for two months.
• Ask for the referral and the review while the client is happy. The best time is the day they move in, not three weeks later when the shine has worn off.

Approvals are the thread running through all of it

Look back at that checklist and notice something. At every single stage there's an approval that has to happen: concept, spec, sample, quote, snag close, handover. Slow or missing approvals are the number one reason projects drag. The client is "busy," the sample sits unapproved, the carpenter waits, the timeline slips, and somehow it's your fault.

The fix isn't nagging harder. It's making approvals easy and on-record. A client portal where they see the mood board, tap approve, and it's timestamped forever beats a WhatsApp voice note every time. I've covered exactly how to do this in How to Get Faster Client Approvals With a Client Portal.

Turn this checklist into your studio's default

A checklist in a blog post is useful. A checklist baked into how your studio actually runs is a moat. Once every project follows the same stages, the same specs format, the same PO flow, you stop reinventing the wheel and your juniors stop making rookie mistakes. That's the whole point of documenting your process, which I get into in The SOPs Every Growing Design Studio Should Document.

Here's the honest truth. You can run this entire checklist on paper, spreadsheets and WhatsApp. Plenty of good studios do. But every stage you keep in a separate tool is a seam where things slip. The enquiry that never became a proposal. The spec that never made it into the invoice. The PO that lost track of a delivery.

Designa exists to put all six stages in one connected workspace. Enquiries, room-by-room specs, mood boards clients approve online, quotes that become GST invoices, procurement from PO to delivery, a branded client portal, Razorpay collection, and Tally and Zoho Books sync. One record, start to finish, so nothing slips between the cracks.

It's one flat founding price: ₹2,299 plus GST per year for your whole studio, up to 10 members, unlimited free client logins, a 7-day money-back guarantee, and done-for-you onboarding and data migration. That's less than what you probably lose on one mistimed marble delivery.

Try it live with your own project at demo.designa.work, and when you're ready to run every project on this checklist for real, grab the founding offer at go.designa.work. Set your studio up so no step, spec or sign-off ever slips again.