Who this guide is for
- Owners drafting an apartment renovation budget for the first time.
- Households comparing contractor estimates and wanting consistent categories.
- Designers preparing a budget conversation with a client.
Scope categories
Start with the rooms in scope and out of scope. Decide the standard of finish for each room (basic, mid, premium) so the budget can be framed at the right level.
- Rooms included.
- Rooms excluded or phased to a later project.
- Walls or partitions changed.
- Wet zones touched.
- Layout changes vs. like-for-like work.
Professional services
Design and management services often pay for themselves through better specification and fewer change orders. Plan for the professional services the project actually needs.
- Architect or designer (where relevant).
- Interior designer.
- Structural, mechanical or electrical engineer (where relevant).
- General contractor and project management.
- Building approval submissions.
Demolition and removal
Demolition is rarely the largest line, but it is the line that often surprises. Plan for waste removal, building access and any temporary protection of finishes that stay.
Kitchen
Kitchens concentrate cabinetry, stone, plumbing, electrical, ventilation and appliance costs. Plan the line with sub-categories so the budget can absorb a change in any one of them.
- Cabinetry.
- Countertops and backsplash.
- Plumbing rough-in and fixtures.
- Electrical and lighting.
- Ventilation.
- Appliances.
- Flooring within the kitchen footprint.
Bathroom
Bathrooms concentrate waterproofing, tile, fixtures, ventilation and plumbing. Plan for hidden damage in older apartments.
- Waterproofing and tile.
- Plumbing rough-in and fixtures.
- Vanity and storage.
- Lighting and ventilation.
- Mirror and hardware.
Flooring
Flooring is usually one of the larger single material categories. Plan for the material, installation, transitions and any subfloor work.
Lighting
Layered lighting belongs in the budget as its own category — fixtures, controls and electrical work — rather than buried inside electrical.
Storage
Storage is the single largest discretionary line in many apartment renovations. Plan it room by room (entry, kitchen, bathroom, bedrooms, wardrobes, utility) with realistic specifications.
Materials
Beyond the kitchen and bathroom lines, plan materials and finishes by room — paint, wall finishes, trim, hardware, accent surfaces.
Delivery, storage and waste
Apartments add a logistics layer. Plan for delivery fees, lift bookings, debris removal, temporary on-site storage and waste fees.
Contingency
A meaningful contingency line absorbs hidden conditions in older apartments and the inevitable scope adjustments during demolition. There is no universal percentage; ask the contractor what they have seen on similar apartments.
Documentation
Plan a small line for documentation — drawings, photos behind walls, change orders, receipts, warranties and final sign-offs. The documentation supports resale, insurance and warranty claims later.
Apartment renovation budget checklist
- 1Scope categories defined for each room in and out of scope.
- 2Professional services line set with the right specialists.
- 3Demolition and waste removal line included.
- 4Kitchen line broken into cabinetry, stone, plumbing, electrical, ventilation, appliances.
- 5Bathroom line broken into waterproofing, fixtures, vanity, lighting, ventilation.
- 6Flooring line including material, installation and transitions.
- 7Lighting line including fixtures, controls and electrical.
- 8Storage line planned room by room.
- 9Delivery, storage and waste fees included.
- 10Contingency line reserved and explained.
Common mistakes to avoid
- Submitting a single total without category sub-lines.
- Comparing bids on totals instead of assumptions and exclusions.
- Skipping the contingency line and then needing one mid-project.
- Treating verbal estimates as contracts.
- Forgetting the logistics layer (lift, delivery, waste).
- Underestimating storage as a discretionary cost.
When to involve a professional
- Contractors and designers can confirm realistic sub-lines for the specific scope and apartment.
- Material suppliers can confirm price ranges for samples that match the design direction.
- Plumbing, electrical, gas, ventilation and waterproofing work should be carried out by qualified licensed professionals.
- Structural and code-related decisions should be reviewed by qualified architects or engineers.
Visual reference pack
Budget planning visual references
Visuals from the free apartment renovation visual reference pack. Use them as planning prompts for material direction conversations, not as buildable specifications.
Visual references are educational planning inspiration. They are not construction drawings, not architectural documentation and not a representation of a real Build Design Hub project.
Frequently asked questions
Questions readers ask about this topic
Should the budget be a single number or a range?
A range with sub-lines is more honest than a single number. The range absorbs hidden conditions and lets sub-lines move without breaking the whole project.
What contingency percentage is right?
There is no universal number. Older apartments and ambitious wet-zone changes usually justify a larger contingency. Ask the contractor what they have seen on similar projects.
Where do professional services fit in?
As their own line. Design, engineering and project management services improve specification quality and usually reduce change orders during construction.
Why no price examples on this page?
Prices vary too much by city, time, scope and apartment to be honest at the apartment level. The structure of the budget travels further than any specific number.
Keep reading