Home Improvement
Interactive Planning StudioRenovation Cost Planner
Understand realistic cost allocations across demolition, bespoke joinery, electrical, plumbing, and luxury surface finishes before tender.
Project Parameters
Enter your exact dimensions and specifications
Architectural methodology
About the Renovation Cost Planner
A successful renovation is defined by budget discipline in the early conceptual phase. Too many projects exhaust funds on cosmetic finishes because hidden infrastructure costs were underestimated.
This planner models realistic trade percentages: roughly 35% for bespoke joinery and cabinetry, 25% for labor and structural framing, 20% for mechanical/electrical/plumbing, and 15% to 20% for architectural contingency reserves.
Underlying Formula
Scope × Finish Tier Rate + Trade Allowances + Contingency
Estimated Total = Base Cost + Trade Allowances + 15% Contingency
Step-by-step guidance
How to Use This Tool
Follow these four essential steps to take accurate architectural measurements and prepare your project quantities.
Step 1
Select the primary project scope (Kitchen, Primary Bath, Living Suite, or Whole Home).
Step 2
Choose your finish specification tier (Refined Quality vs Bespoke Luxury).
Step 3
Input the room square footage.
Step 4
Review the itemized trade breakdown and recommended contingency buffer.
Expert clarity
Frequently Asked Questions
Common queries answered by our architectural editors and renovation consultants.
What contingency reserve is realistic?
Never start a remodel without at least 15% contingency for pre-1980 homes, or 10% for modern builds to cover unforeseen subfloor, plumbing or electrical repairs.
Where should I invest first in a renovation?
Invest in the building envelope first: soundproofing, insulation, and high-performance glazing. These cannot easily be upgraded later like decorative fixtures can.
Does this estimate include contractor management fees?
Yes, standard general contractor overhead and management (typically 15–20% of project labor) is factored into the trade pricing tiers.
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