Home Interior Design

Fixed scope is everything built into the building: joinery, false ceilings, electrical and plumbing changes, flooring, wall finishes, doors. It is disruptive, it is hard to change later, and it is where most of the budget goes. This is the part that needs drawings and a proper sequence.

Loose scope is furniture, lighting fittings, soft furnishings, art and styling. It can be bought over months, it can be changed, and it is where a home actually starts to look like the people in it. The common mistake is spending the entire budget on fixed scope and moving into a beautifully joinered flat with nothing to sit on.

The sequence is not negotiable and every stage constrains the next. Demolition, then plumbing and electrical rough-in, then plastering, then flooring, then false ceiling, then joinery, then painting, then fittings and fixtures, then deep clean, then furniture. Skipping ahead is what causes rework.

• Site survey and measured drawing – one week, and it should not be skipped
• Design, layouts and material selection – two to four weeks depending on decisiveness
• Civil work, plumbing and electrical rough-in – two to three weeks
• Flooring and false ceiling – two to three weeks, running partly in parallel
• Joinery manufacture and installation – four to six weeks, the longest single stage
• Paint, fittings, deep clean and handover – two weeks

Two ordering rules save the most money. Joinery is measured after the flooring is laid, not before, because floor thickness moves every vertical dimension. And every socket, switch, data point and light position is marked on an elevation drawing before the plastering closes the walls, because that is the last moment it is free to change.

A 2BHK apartment with full fixed scope runs 10 to 14 weeks from frozen drawing to handover. A 3BHK is 14 to 18 weeks. An independent house with civil changes is six months and up. Those numbers assume decisions arrive on time, which is the single most common cause of delay.

The clock does not start when you sign. It starts when the drawing is frozen and the material selections are made. Projects that run late almost always lost the time at the front, choosing a laminate for three weeks, rather than at the back.

In a typical Indian apartment, joinery is 45 to 55% of the fixed-scope budget – kitchen, wardrobes, TV unit, crockery unit, study. That single line dominates everything else, which is why carcass material and hardware are the specifications worth arguing about.

False ceiling and electrical together are 12 to 18%. Flooring, if it is being replaced, is 10 to 15%. Painting is 6 to 10%. Bathrooms, if they are being redone, are their own project and can add 15 to 25% on top. Furniture and lighting sit outside all of this and typically add another 20 to 35% of the fixed-scope figure.

The value is not colour selection. It is the measured drawing that catches the builder's dimensions being 40mm out, the elevation that puts a socket where the bed will actually be, the specification that says IS 710 rather than plywood, and the sequence that keeps the electrician ahead of the ceiling contractor.

The second half of the value is procurement and coordination – knowing which supplier delivers to schedule, catching a substitution before it is installed, and holding the retention until the snag list is closed. On a project with eight trades, that coordination is most of what you are paying for.

Keep the drawing set and the snag list. Six months later, when a socket needs adding or a leak has to be traced, the electrical elevation is worth more than any warranty document. Photograph the walls before plastering closes them, which takes ten minutes and repeatedly saves whole days later.

Most joinery issues appear in the first monsoon after installation, as timber and boards find their moisture equilibrium. A shutter that has moved slightly, a drawer that catches, a hairline at a ceiling joint – these are normal and are what the defect liability period exists for. Report them together rather than one at a time.