Is the residual viable?
Residual land value, build cost, S106 + CIL, finance, contingency, the real number behind the asking price.
PropSnap is the free UK decision-support app for owner-managed property development. Model real development viability (residual value, S106, CIL, finance), surface planning-permission probability against the LPA's track record, and decide whether to bid, built for developers of 1-50 unit schemes.
Mortgage interest is no longer deducted from rental income, it gets a 20% credit instead. PropSnap shows your real tax and net profit, and the extra Section 24 has added. Instant, in your browser, on 2025/26 rates.
Section 24: mortgage interest is not deducted from rental income; a 20% basic-rate tax credit applies instead. Estimate for an individual landlord on 2025/26 rates. Run the full calculation and the engine applies the HMRC caps on the credit and the personal-allowance interaction with your other income. Not tax advice.
Every Snap is scoped to one operator decision. PropSnap answers three sub-questions that, together, give you the call you needed to make on property development · planning this week.
Residual land value, build cost, S106 + CIL, finance, contingency, the real number behind the asking price.
LPA approval rate, recent appeal patterns, policy fit, design-officer signal.
Senior debt, mezzanine, JV equity, matched to GDV and the developer's track record.
Owner-managed UK property developers, self-build investors and small-scale landlords-going-into-development, running schemes of 1-50 units who carry the viability and planning risk personally.
Location, indicative scheme, asking price, current planning status.
Residual viability, planning probability, finance-match, exit-yield posture.
Bid-or-walk recommendation, top 3 viability levers, planning-risk flag list.
Pre-briefed pack for the QS or planning consultant; or a clear walk-away.
Arthur is a paid property-management platform (entry plans pitched at around 50-plus units) you run the portfolio on. PropSnap answers one live obligation before that.
Check a deposit deadline, EPC, licence or repair timescale free, before you pay for a portfolio platform.
Pair with LandlordSnap once units are tenanted.
PropSnap is one of 22 free Snap apps. If your sector is not on the list, we will build one, scoped, shipped, supervised, in 4 to 8 weeks. Same engineering core, same source-freshness CI, your decision priced against the outcome it produces.