The most useful interior budget is not a single number. It is a decision map: what the project must include, where quality matters most, what can wait and how changes will be approved. Use this guide before you ask for quotations so every designer is pricing the same brief.
Start with scope, not a square-foot rate
Two homes with the same area can have very different interior costs. One may need only a kitchen and wardrobes; another may include loose furniture, electrical changes, ceilings, painting and complete decor. A rate without a written scope makes comparison unreliable.
Create three lists before setting a number:
- Must have: items needed before move-in, such as the kitchen, essential wardrobes and lighting.
- Should have: useful items that improve daily life but can be simplified, such as a TV unit or study.
- Later: decor, extra furniture or non-essential upgrades that can be added after living in the home.
Build a room-by-room scope sheet
Write every deliverable under the room where it belongs. This prevents small but numerous items from disappearing between the design discussion and the final quote.
| Room | Typical scope to decide | Questions to answer |
|---|---|---|
| Kitchen | Cabinets, hardware, countertop, sink, lighting and appliance positions | Which appliances already exist? Is plumbing moving? |
| Bedrooms | Wardrobes, beds, side tables, study, dressing and lighting | How much hanging, drawer and luggage storage is needed? |
| Living and dining | TV unit, seating, dining, display, ceiling and feature finishes | What will be custom-made and what will be bought loose? |
| Bathrooms | Vanity, mirror, fixtures, tiling, plumbing and ventilation | Is this styling work or a full wet-area renovation? |
Use a planning split, then replace it with real quotes
At the earliest stage, divide your working budget into four buckets: fixed interior work, loose furniture and appliances, professional or site costs, and a change reserve. This is a planning tool, not a market-price claim.
Fixed work
Kitchens, wardrobes, built-ins, finishes and the installation attached to them.
Movable items
Sofas, dining, mattresses, curtains, rugs, lights and appliances.
Site and professional costs
Design, supervision, delivery, debris handling or society permissions, where applicable.
Change reserve
A deliberately untouched amount for discoveries, revisions and owner-requested upgrades.
Once drawings and specifications are ready, replace every allowance with a quoted amount. Do not spend the reserve to make the first proposal look complete.
Compare quotations line by line
A lower total is not automatically a lower price for the same work. Ask each proposer to identify dimensions, material specifications, hardware, finishes, quantities, taxes, delivery, installation and exclusions. Look for broad labels such as “premium plywood” or “complete electrical” without brand, grade, thickness, point count or scope.
Control changes before work starts
Late revisions affect more than the changed item. Moving a kitchen appliance can alter a cabinet, counter cut-out, electrical point and plumbing route. Agree on a simple change process: written request, cost impact, timeline impact and approval before execution.
Also decide who purchases each item. When the owner, designer and contractor assume someone else is supplying a fitting, the gap appears late and usually costs more to solve.
Your budget-ready checklist
- Floor plan and site measurements are available.
- Must-have, should-have and later lists are agreed.
- Each room has a written deliverable list.
- Material and hardware specifications are named.
- Loose furniture and appliances have separate allowances.
- Taxes, delivery, installation and exclusions are visible.
- A change reserve remains untouched.
- Payment stages are tied to clear milestones.
COMMON QUESTIONS
Before you move ahead
Why do interior quotations vary so much?
Scope, dimensions, material grades, hardware, finishes, site conditions and the amount of custom work can all differ. Compare itemised deliverables rather than totals alone.
Should I disclose my budget to an interior designer?
A realistic working range helps the designer prioritise. Pair it with a clear must-have list and ask the proposal to show what is included, optional and excluded.
How can I avoid cost surprises?
Freeze the main layout early, insist on written specifications, keep a change reserve and require written approval for variations before work proceeds.
