Renovation Budget Breakdown: Golden 7-Category Ratios + Per-㎡ Benchmarks (2026)
1. The #1 Cause of Blowouts: Picking the Style Before the Budget
90% of home renovations go over budget because homeowners start with mood boards, not numbers. The correct order is total budget first → proportional split second → style selection last. Don't fall for "we'll tweak later" — the whole industry sales process is designed to make you emotionally attached to a pricey look and then edge you up, bit by bit.
2. The Industry "Golden Ratio": 7 Categories
Based on 5,000+ completed project post-mortems, the all-in budget (everything from labor to appliances to curtains) usually lands near this split for typical owner-occupied homes:
| Category | Suggested share | What's included |
|---|---|---|
| Labor & fit-out (硬装) | ~ 40% | Plumbing, electrics, tiling, carpentry, painting, rubbish removal |
| Main materials (主材) | ~ 22% | Tiles, flooring, kitchen cabinets, interior doors, bathroom fixtures |
| Furniture (家具) | ~ 18% | Sofa, beds, dining sets, wardrobes & storage |
| Appliances (家电) | ~ 12% | TV, air conditioners, fridge, washer, cooker hood + hob, water heater |
| Soft furnishings (软装) | ~ 5% | Curtains, wall art, rugs, lighting, plants, bed linens |
| Contingency (预留) | Remaining ~ 3% | Changes on site, missed items, extra rework |
For older homes / second-hand apartments, add a separate demolition line item of 10–15% of labor cost. It is the single most commonly omitted number and the #1 reason a "¥400k plan" becomes ¥600k.
3. Per-㎡ Price Benchmarks: 3 Tiers (2026 China)
Per-㎡ all-in price = total budget ÷ floor area. It's the fastest sanity check on whether a contractor quote is tight, fair, or padded. 2026 domestic reference values:
| Tier | ¥/㎡ (all-in) | Lifestyle match |
|---|---|---|
| Economy | ≈ 900 | Rental / short-stay: durable plumbing & electrics, everything else basic |
| Comfort | ≈ 1,400 | Most owner-occupied homes — branded materials, appliances bought upfront |
| Premium | ≈ 2,200 | Low-VOC materials, bespoke joinery, smart home, mid-premium brands |
Adjust for city: Tier-1 cities +10~20%, Tier-2 flat, Tier-3/4 -5~15%. The Renovation Budget Calculator compares your chosen budget against these same three tiers and flags anything more than 15% above or below the reference band.
4. Why 9 out of 10 Renovations Go Over: 4 Traps
Trap 1: Demolition costs hidden until the contract is signed
Many contractors deliberately leave demolition off the quote to show a bargain-basement price. After you sign: ¥800 per wall, ¥60/㎡ floor removal, ¥150/㎡ tile breaking. Total: easily an extra ¥10k~20k. Fix: walk the property before signing, film everything, and require a written, itemized demolition list.
Trap 2: Plumbing & electrics quoted "per actual point"
This is the single most profitable line item for contractors. Push for a lump-sum per-㎡ cap written into the contract. If you must pay by points/meterage, sign off every new point and every meter of pipe before the work starts.
Trap 3: Kitchen cabinet quotes exclude worktops, hinges, drawers
A headline "¥1,580 per linear meter" sounds like 4m ≈ ¥6,320. Add worktop separately, soft-close hinges separately, drawers separately, handles separately — and the real number starts at ¥15k.
Trap 4: No 3~5% contingency locked aside
However careful you are, there will be omissions. You'll open a wall and find cracked pipes; the waterproofing must be re-done; the old plaster base won't hold tile. The 3~5% contingency isn't "maybe-spend" — it's "will-spend 90% of the time".
5. 7-Step Renovation Budget Process
- Lock the all-in cash pool (appliances and furniture included). That's your total budget.
- Run it through the Renovation Budget Calculator for a 7-category split so you can see how much each category gets.
- Compare to the three per-㎡ reference bands to confirm the tier matches your ambition.
- List non-negotiable appliances first (cooker hood, water heater, ACs, fridge, washer). Everything else can wait.
- Buy furniture on a rolling basis — sofa, mattress can wait six months. Custom cabinetry, however, should be done now.
- Lock the 3~5% contingency aside. Don't reallocate it during the early "excitement" phase.
- Get 2~3 written, itemized quotes per trade. Compare line items, not bottom lines.
6. Can't Pay All Cash? The True Cost of Renovation Financing
¥300,000 over 5 years at 4% renovation-loan APR ≈ ¥5,525/month with ~¥31,500 total interest. Put the same ¥300k on a credit card installment at 0.6%/period fee and the true APR via IRR is ~13%+ — over 5 years you'd pay roughly ¥100,000 more in interest. Always run the Credit Card Installment Calculator and the Renovation Loan Calculator side by side before choosing.
7. Styles That Save / Cost Extra
- Nordic / minimalist modern: the cheapest. Standard materials, simple cuts, fewer custom edge cases.
- Chinese-classical / French / American: add 25~40% on average. Mouldings, shaped parts, and custom hardware all cost.
- Muji-style Japanese: looks simple, rarely cheaper than Nordic — the storage/cabinetry density is the cost driver.
The takeaway: lock the tier first, then pick a style that fits the tier. Don't let a beautiful mood board drag your budget 30% beyond where it should be.
❓ Frequently Asked Questions
How much should a 100㎡ renovation cost in 2026?
Across China: Economy ≈ ¥90k all-in, Comfort ≈ ¥140k, Premium ≈ ¥220k. Add 10~20% for Tier-1 cities.
Partial-service (半包) vs. turnkey (全包)?
Partial if you have time + you can check the site + you know materials — cheaper and more flexible. Turnkey + an independent inspector if you don't — often ends up cheaper than a badly-managed partial-service project.
Should payments be staged?
Industry standard: 30% start, 40% after plumbing + tiling, 25% after painting, 5% retention held 3 months after handover. Never let the retention drop to zero on handover day.
Why do older homes cost more?
Demolition (~10~15% of labor cost), mandatory re-wiring and re-plumbing in older buildings, waterproofing and wall-base remediation. Typical total uplift: 15~25% over a new build.
How do I spot a "lowball then upsell" quote?
Insist on line-item pricing with explicit "lump sum or extra" flags for each line. Plumbing/electrics, demolition, and auxiliary-material specs are the three classic upsell vectors.
👉 Plan before you demolish: drop your total budget and floor area into the Renovation Budget Calculator — 20 seconds for the 7-category split and the per-㎡ tier check.