I've run this comparison for my own situation and found that the true costs on both sides looked quite different once I accounted for everything — including the costs most comparison guides omit.
Renovate or move is one of the most financially significant decisions a homeowner makes, and one that is frequently resolved by gut feeling, emotional attachment, or whichever option feels less overwhelming at the time. A systematic cost comparison changes the decision-making process significantly. In some cases the numbers clearly favour moving; in others, renovation is the better use of capital. The comparison requires looking at both options honestly — including the costs that are easy to overlook on each side.
The Main Costs of Renovating
Renovation costs vary enormously by scope, specification, and property condition. The relevant figures for a genuine renovation vs moving comparison are the total project cost at a realistic specification, including the costs that tend to get underestimated or added after the initial budget is set.
A mid-range kitchen renovation: £12,000 to £25,000. A bathroom renovation: £6,000 to £15,000. A loft conversion: £35,000 to £65,000. An extension (single-storey rear): £35,000 to £80,000 depending on size and specification. A full structural remodel involving multiple rooms and system upgrades: £80,000 to £200,000+.
The renovation budget must also include: planning permission and building regulations costs (£500 to £2,500), architect or designer fees (8% to 15% of project cost for larger projects), project management time if not using a main contractor, temporary accommodation costs during major works, and a contingency of 15% to 20% for the unexpected discoveries that renovation reliably produces.
The Main Costs of Moving
Moving costs are substantial and often underestimated because they are distributed across many line items that are never totalled:
Estate agent fees for selling: 1% to 2% of sale price (plus VAT). On a £380,000 property: £4,560 to £9,120. Conveyancing for sale and purchase: £2,000 to £4,000 combined. Stamp duty on the new purchase (moving from £380,000 to £520,000, not first-time buyer): approximately £13,000. Mortgage arrangement fee: £0 to £2,000. Survey on the new property: £500 to £1,200. Removal company: £800 to £3,000 depending on volume and distance. Storage if there is a gap between selling and buying: £150 to £400/month.
Total transaction costs for moving between two properties in the £380,000 to £520,000 range: typically £22,000 to £35,000. This is capital spent on the transaction that produces no improvement to living space or quality of life — it simply enables the move.
Property Value Increase vs Total Spend
Renovation only makes financial sense if the cost is recovered in added property value, or if the quality of life improvement justifies spending money that is not recovered. Not all renovation adds pound-for-pound value — some adds more, some adds less, and some adds nothing at all.
Renovations with the best value-add return in UK residential property: kitchen renovation (50% to 70% of cost recovered in value), bathroom renovation (50% to 60%), loft conversion with bedroom and bathroom (typically adds more than it costs in most markets), extension (variable but often neutral to slightly negative in lower-value markets, positive in high-value areas).
Renovations with poor value-add return: swimming pools, highly personalised interiors, overspecification for the local market (installing a £60,000 kitchen in a street where average property values are £250,000 will not recover the cost at sale).
Disruption, Time, and Risk
Renovation is disruptive in a way that moving is not. A loft conversion takes six to ten weeks. An extension takes three to six months. During major structural work, part of the home may be uninhabitable. For families with children or anyone with a low tolerance for construction disruption, the quality-of-life cost during renovation is a real factor that should be included in the comparison.
Renovation also carries execution risk: contractor quality, cost overruns, and unexpected structural discoveries are all more common than most homeowners expect before their first major project. Moving has its own risks — not finding the right property, gazumping, chain collapses — but once completed, the costs are known.
How to Use the Calculator
The Renovation vs Moving Calculator takes your current property value, renovation budget and expected value uplift, target new property price, and all transaction costs for both options, and produces a direct financial comparison over a defined time horizon. Input the realistic full cost for each option — including contingency on renovation and all transaction costs for moving — to get a comparison that reflects what you would actually spend.
What to do next
Use the ideas above as a starting point — then connect them to your own numbers and related guides on Calc It Anything.
- Read the mortgage, home buying and property costs guide for the wider cluster.
- Compare with Is This Rental Property Actually Worth Buying?.
- Compare with Rental Yield vs ROI and Why Property Numbers Get Misunderstood Constantly.
- Run the relevant calculator on this site with your own inputs before making a decision.
Related reading
- mortgage, home buying and property costs guide
- Is This Rental Property Actually Worth Buying?
- Rental Yield vs ROI and Why Property Numbers Get Misunderstood Constantly
- House Poor Explained: When a Home Starts Controlling Your Entire Financial Life
- Complete Rental Property Investment Guide
For official UK context, see GOV.UK buying and selling a home.
Frequently asked questions
Should I compare gross yield or net cash flow first?
Gross yield is a quick filter; net cash flow after mortgage, voids, maintenance, and tax is what determines whether you can hold the property comfortably. Stress-test both before you offer.
How much of my income should housing take?
A common planning band is 25–35% of net household income, but high-cost areas and variable-rate mortgages may need a lower target. Model your own numbers rather than copying a rule of thumb.
Is overpaying a mortgage always better than investing?
Not always. Compare your mortgage rate after any tax relief with expected long-run investment returns, your emergency buffer, and how long you plan to stay in the property. The right answer depends on your numbers and risk tolerance.