In short: Yes, but the margin for error has shrunk considerably, build cost inflation, higher bridging/development finance costs, and HMRC’s readiness to tax “flips” as trading income (not capital gains) mean sloppy appraisals now lose money rather than just underperform. It still works if you buy genuinely below market value, cost the refurb conservatively with real contingency, understand the tax treatment before you start, and have a realistic timeline that assumes delays. Treat it as a business with thin margins, not a guaranteed side-hustle.
The headwinds are real
Build cost inflation has moderated but hasn’t reversed. Tender price inflation is running at roughly 2.5-4% annually in 2026, far calmer than the 2021-2023 spike, but still compounding on three-plus years of elevated costs. Specific line items remain volatile: plumbing and kitchen installation costs have risen around 6-8% in some categories, and skilled labour (bricklayers, electricians, plumbers) has seen day rates rise roughly 7% since 2024. A refurb budgeted against 2022 cost assumptions will be wrong today.
Finance costs are higher than the ultra-low-rate era. With the Bank of England base rate around 3.75% in mid-2026 and bridging/development finance priced well above mainstream mortgage rates (often 0.5-1%+ per month on bridging), every month a project overruns directly erodes your margin. A six-month flip that slips to nine months isn’t just annoying, the extra finance cost, council tax, insurance, and utilities can wipe out a modest profit entirely.
Tax treatment is the underestimated risk. Many first-time flippers assume they’ll pay Capital Gains Tax (18% or 24% depending on your tax band, after the £3,000 annual exempt amount) on any profit. HMRC doesn’t see it that way by default. Using the long-established “badges of trade” test, HMRC looks at:
- the reason you bought the property (intent to profit from a quick resale vs long-term letting/residence),
- how the purchase was financed (short-term bridging suggests a trade),
- the work carried out (substantial renovation for resale, not just maintenance),
- the length of ownership (short holds look like trading),
- frequency (a pattern of repeated flips strengthens the case), and
- your circle of contacts (estate agents, builders, other flippers you routinely work with).
If HMRC concludes you’re “trading” rather than investing, your profit is taxed as income (and potentially subject to Class 4 National Insurance, 9% on profits between roughly £12,570-£50,270 and 2% above that), not CGT. There is no special lower “flipping” rate, no annual exempt amount equivalent, and no relief for a single transaction, the tax bill on a trading profit can be materially higher than most flippers budget for, especially for higher-rate taxpayers.
Planning risk hasn’t gone away. Permitted development rights have expanded in some areas (office-to-residential conversions, certain extensions) but local authorities have tightened Article 4 directions in others, removing permitted development rights in specific conservation or high-demand areas. Never budget a flip’s profit assuming planning consent will be granted, assume you’ll get the current lawful use only, and treat any uplift from planning as upside, not baseline.
What still works
Buying genuinely below market value. The margin in flipping comes almost entirely from the purchase price, not from clever presentation at resale. Sources of genuine below-market-value deals include probate sales, distressed/repossession stock, off-market deals sourced through direct-to-vendor marketing or local agent relationships, and auction lots that mainstream buyers can’t finance (see our property auctions guide). If you’re paying full market value and hoping the refurb “creates” the profit, the numbers rarely work once costs and tax are accounted for.
Conservative, itemised cost appraisal with real contingency. A workable appraisal looks like:
- Purchase price + SDLT (including the 5% additional-property surcharge that applies to most flips, since you’ll usually own another property) + legal fees + survey
- Refurbishment cost, quoted by trade, not guessed as a lump sum
- Contingency of 15-20% on top of the refurb quote, this is not optional; almost every refurb uncovers something (rot, wiring, damp) once work starts
- Finance cost for the realistic hold period (not the optimistic one), interest, arrangement fees, exit fees
- Selling costs, estate agent fees, conveyancing, potential CGT or income tax on the profit
- Target minimum margin, many experienced flippers work to a rule of thumb of needing at least 20-25% projected margin on total costs before starting, precisely because so many things erode that margin along the way
Permitted development and extension add-value angles remain one of the more reliable ways to create genuine uplift rather than just tidying a property: loft conversions, single-storey rear extensions, converting a house into flats (where planning and lender appetite allow), or adding a bedroom by reconfiguring layout. These add square footage and functional rooms, which is what actually drives valuation uplift, a new kitchen and paint job rarely moves a valuation as much as first-time flippers expect; it mainly helps the property sell faster, not for more.
Realistic timelines. Budget for a longer void than you expect, securing planning/building control sign-off, tradesperson availability, and material lead times all routinely add weeks. Many experienced operators plan for 20-30% longer than their initial contractor estimate, specifically because that’s the historical overrun pattern on projects of this kind.
The bottom line
Flipping hasn’t stopped working, but it’s no longer a low-skill, low-risk way to make quick money, if it ever really was. The investors still doing it profitably in 2026 are the ones sourcing well below market value, costing refurbishments like a professional (with contingency), understanding upfront whether HMRC will treat their profit as income or capital gain, and building in enough time buffer that a delay doesn’t turn a profitable project into a loss-making one.
Related reading
Sources
This is general information, not financial or investment advice. Figures referenced are accurate to the best of available information as of July 2026 unless stated otherwise. Property investment carries risk, always do independent research or consult a qualified financial adviser before making investment decisions.
Last Updated on September 21, 2026