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Renovation Budget Calculator

Estimate a full interior renovation cost with regional cost indexes for the US, UK, Canada and Australia.

How the budget estimate works

We take a baseline all-in rate per square foot for a full interior renovation, multiply it by your selected regional index, then add a contingency percentage and a separate design/permit line. The result is a top-down planning number you can pressure-test against contractor bids.

Base = floor area x tier rate x regional index
Total = Base x (1 + contingency%) + design & permits

What the regional index captures

Labor is the biggest variable. US baseline rates already include typical framing, electrical, plumbing and finish carpentry. The UK and Australia indexes rise because trades are scarcer and compliance paperwork is heavier; Canada tracks close to the US; Western Europe sits slightly above. These are planning factors, not live market prices.

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Use cases

  • Pre-offer sanity check - before buying a fixer-upper, estimate the renovate-in cost to confirm the deal.
  • Scope trade-offs - switch tiers to see whether premium finishes blow the budget.
  • Contingency planning - older homes benefit from 20%; the tool shows the dollar impact instantly.
  • Cross-country comparison - expats relocating can compare a US vs UK reno budget in one view.

Tiers, explained

Budget keeps existing layouts, uses stock cabinets and laminate. Standard allows modest layout changes, semi-custom cabinets and engineered wood. Premium assumes full reconfiguration, custom millwork and natural stone. None of these include structural engineering or additions.

Frequently asked questions

Why does renovation cost differ by country?
Material prices, labor rates, permits and building-code requirements vary widely. Our index scales a US baseline by an approximate regional factor so you can sanity-check a local quote, not replace it.
What should I include for contingency?
A 10-15% contingency is standard for known scopes. If you are opening walls, changing layouts, or working in an old home, plan 20% because hidden problems are common.
Are these per-square-foot rates realistic?
They are planning ranges for a full interior renovation and exclude land, design fees and structural changes. Use them to size your budget, then get three local quotes.
Estimates only and not a substitute for licensed quotes. Regional indexes are approximate planning factors, not live pricing.

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Building a renovation budget that holds up

How to use this calculator

  1. List every trade and material category the project touches, even ones you plan to DIY — the list exposes hidden dependencies.
  2. Price the big-ticket items first: cabinets, fixtures, flooring, and labor usually dominate home renovation costs.
  3. Add permit and inspection fees, which many first-time renovators forget; requirements vary by city and project scope.
  4. Include a contingency of 15–20% for unexpected findings — old wiring, hidden water damage, and out-of-level floors are common discoveries behind walls.
  5. Track actual spending against the budget weekly during the project, and log every change order in writing before work proceeds.

Quick reference

Category Typical share Examples
Labor30–45%Trades, installers, general contractor
Cabinets & millwork15–25%Kitchen cabinets, built-ins
Appliances & fixtures10–20%Range, fridge, faucets, lighting
Surfaces10–20%Tile, flooring, countertops, paint
Permits & fees2–5%Building permit, dumpster, inspections
Pro tips
  • Renovations routinely run 10–20% over initial estimates — the contingency line is what keeps a surprise from becoming a stalled project.
  • Get itemized quotes rather than lump-sum bids; itemization shows where estimates diverge and gives you negotiation leverage.
  • Phasing works: doing structural and plumbing work first and cosmetics later spreads cost and lets you live in the space between phases.

Frequently asked questions

How much contingency should I keep?

15–20% of the project total is the standard planning figure for homes more than a few decades old; newer homes with known histories can sometimes plan closer to 10%.

Which renovations add the most resale value?

Industry cost-vs-value studies consistently favor midrange kitchen and bath refreshes, exterior door and siding replacement, and added living area over high-end luxury upgrades, which rarely return their full cost.

Should I tell my contractor my budget?

Sharing a realistic range helps a contractor propose scope that fits, rather than bidding an idealized version you cannot afford. You can hold back your maximum and share a target range instead.