How Much Will My Renovation Cost? A Complete Guide to Planning Your Home Renovation Budget in 2025
- Accanto Interiors
- May 12
- 4 min read
By Nik Kola, Zuzana Phillips & Lina Clark
Builder, Strategist & Interior Architect | Accanto Interiors
If you're planning to renovate your home in 2025, one of the first questions you're likely asking is:
“How much will my renovation cost?”
Lina: That’s like asking, “How much does success cost?” It depends on how big you're dreaming. If you're playing small, you'll get small returns. But if you're building a space that reflects the future version of you — the one who wakes up energized, works smarter, hosts better, and lives bolder — then the real question is, what’s the cost of staying in a space that doesn’t serve you?The price tag is just a number. The real cost is wasted time, energy, and potential.
Zuzana :Let’s flip the script. Instead of asking “How much will it cost?” ask:👉 How do I make sure every pound I spend builds equity, peace of mind, and leverage?A kitchen isn’t just a kitchen — it’s a capital asset if done right. A renovation is a revenue move if you approach it like an investor: clear plan, vetted team, and ROI in mind.We don’t guess budgets. We design them with your goals baked in.
Nik: You tell us your vision, and we’ll reverse-engineer the most intelligent, efficient, and impactful way to get there — no fluff, no ego, just strategy and style.
The truth? There’s no single number that fits everyone. But there is a smart way to find the answer that suits your goals, your property, and your future.
This is your complete guide to renovation costs, budgeting tips, and the smartest ways to spend for maximum impact — whether you’re renovating a London flat, upgrading a family home, or transforming a commercial space.
Why Renovation Costs Vary
Renovation costs can range widely depending on:
Property type: flat, terraced house, detached home, listed building
Scope of work: minor refurbishments vs full renovation and reconfiguration
Location: London vs outer boroughs vs countryside
Design level: off-the-shelf finishes vs bespoke joinery and high-end materials
Contractor quality: vetted professionals vs budget trades
At Accanto Interiors, most of our full home renovation projects in London range from £70,000 to £300,000, depending on complexity and finish level. But it’s not just about the total number — it’s about what you're spending on and why.
How to Budget for a Renovation in 2025
Here’s how to build a renovation budget that’s realistic, intentional, and designed for return on investment — not regret.
1. Define Your Goals First
Before crunching numbers, define what success looks like. Are you:
Creating your forever home?
Preparing to sell or rent?
Adding space and functionality for a growing family?
Upgrading energy efficiency to reduce bills long-term?
Start with your vision. Your budget should be based on the lifestyle you’re designing, not just a vague number you hope to stay under.
2. Prioritise by Return on Value
Some areas offer more value than others — both financially and emotionally. Here’s where to focus:
Kitchen Renovation Costs
Expect to invest £15,000 to £200,000, depending on size, layout changes, and specification.A high-functioning, well-designed kitchen adds significant value to your home — often up to 10–15% of your property’s resale value.
Bathroom Renovation Costs
A full bathroom renovation usually falls between £7,000 and £100,000. Multiple bathrooms, wet rooms, or spa features can increase costs — and desirability.
Structural Works and Layout Changes
Knocking down walls, moving plumbing, or reinforcing floors can range from £10,000 to £500,000+, depending on complexity. But these are the changes that turn your space from “functional” to “transformational.”
Interior Finishes and Custom Joinery
Built-in storage, lighting design, and quality finishes elevate the entire experience. Expect £1200 to £5,500 per square metre for luxury, bespoke interiors that stand the test of time.
Smart Spending: Where to Save and Where to Invest
Spend More On:
Structural integrity: Foundations, walls, electrics, and plumbing must be right the first time.
Kitchen and bathrooms: These are the most-used and most scrutinised areas of any home.
Bespoke storage and layout planning: Tailored design creates daily efficiency and long-term value.
Project management: A well-managed build avoids delays, errors, and costly mistakes.
Save Smartly On:
Paint and surface finishes: These can be updated more easily later.
Off-the-shelf fittings in secondary spaces: Not every area needs luxury-grade fixtures.
Phased design: Prioritise essential works now, and layer upgrades later if needed.
Hidden Costs to Expect (And Plan For)
Every renovation has potential hidden costs. Plan ahead with a 10–15% contingency built into your budget. Common extras include:
Planning application fees
Structural engineer reports
Asbestos or damp remediation
Unexpected repairs under flooring or plaster
Temporary accommodation if works are extensive
Renovation Cost Examples (Real-World)
1-Bed London Flat, Full Interior Renovation
on a budget £85,000
good quality £200 000
Includes layout changes, kitchen, bathroom, flooring, lighting, painting, and joinery
3-Bed Terraced House, Extension + Interior Renovation
on a budget £180,000
good quality £1000000 Includes rear extension, full ground floor redesign, kitchen, two bathrooms, flooring, insulation, finishes
Commercial Space Renovation (Clinic or Retail)
on a budget £100,000
good quality £850,000 – Includes branding-led interiors, joinery, layout planning, lighting, compliance upgrades
Everything deepens on materials you choose and we can always find the best solution for your budget.
How to Get a Renovation Quote You Can Trust
To avoid vague or misleading estimates, make sure your renovation quote is:
Based on a clear, documented scope of work
Created with a qualified designer and builder
Includes labour, materials, project management, and contingency
Updated through design development and technical drawings
At Accanto Interiors, we don’t start with guesswork — we start with strategy. Our design-build model ensures cost transparency from day one, so you know what you're paying and why.
Final Word: Don’t Ask “How Much Will It Cost?” — Ask “How Can I Spend Wisely?”
Your home is the foundation of your lifestyle, wellbeing, and future equity. Renovating it well isn’t about spending more — it’s about spending intelligently.
If you’re ready to design a space that performs beautifully, adds value, and stands the test of time, we’re here to guide you through every step — from concept to completion.
Book Your Free Renovation Consultation
Thinking about renovating in 2025? Schedule a no-pressure call with our design team and let’s map out your vision, budget, and timeline — with clarity, insight, and experience.
Specialising in residential and commercial renovations in London and beyond.
BOOK THE CONSULTATION NOW
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