Stop spending £500k to find out your scheme was always going to be refused.
Rasmere reads every officer report in your borough and tells you, in 30 seconds, exactly what the planners have been refusing, and which red flags your scheme will trip, before a single drawing is commissioned.
30 seconds · No login · No card · Real refusal data
Live refusals · streaming from UK LPAs
Why now
The market punishes slow learners. Refusal rates are climbing, councils are tightening, and your competition already knows what gets through.
Householder and minor schemes face the highest refusal rates on record. Most are turned down for reasons cited dozens of times before in the same borough.
Architect fees, planning consultants, surveys, pre-app meetings. All gone if the scheme was always going to be refused on a pattern your borough has flagged 40 times.
Six months of holding costs, frozen capital, and lost optionality, just to learn what was already in the public record on day one.
If you're putting capital into UK property, you cannot afford to be the last one to read the room.
The good developers already know what their borough refuses. Rasmere gives the rest of the market the same edge, in 30 seconds, before a single fee is committed.
A real Rasmere report
This is what you get back. In 30 seconds.
Specific. Cited. Borough-aware. Built from the actual reasons officers have used to refuse comparable schemes.
42 Northcote Road, SW11
Three substantive risks identified for this scheme type at this address. Wandsworth has refused 11 comparable applications in the last 18 months citing nearly identical reasoning. Address the items below at design stage to materially reduce refusal risk.
Wandsworth's Housing SPD caps single-storey rear extensions at 3.5m on terraces. Officers have refused 7 applications above this in 2024 to 2025.
Property sits within the Northcote CA. Refusals consistently cite missing material schedules and incompatible glazing systems.
Adjoining lower ground floor kitchen window likely fails BRE 209 VSC test by ~14% based on parcel geometry.
The depth, height and bulk of the proposed extension would be excessive and would result in an unneighbourly form of development contrary to Policy LP24...
Officer report · 2024/3187 · Wandsworth
The asymmetry
The data is public. The interpretation is not.
Every refusal is explained in a public officer's report. Across hundreds of these reports, clear patterns emerge, but no developer reads them at scale, and architects advise from memory rather than systematic analysis. Rasmere is the missing data layer beneath both.
Refusals are predictable
70%+ of refusals in the average London borough cite reasons that have appeared in 5+ prior decisions. The signal is sitting in plain sight.
The cost of being wrong
A refused 6-unit scheme costs £300k to £800k in holding costs, redesign, planning consultants, and lost time. A single refusal can wipe a year's margin.
No tool sits beneath the consultant
Architects design. Planning consultants react. Nothing tells the developer, before drawings start, which patterns the officer is going to apply to their scheme.
The method
Run a site through Rasmere before drawings start.
5 London boroughs. New LPA shipped monthly.
Wandsworth, Lambeth, Camden, Hackney, Croydon. Outside coverage we still produce a general UK risk read, flagged clearly so you know what's borough-specific data and what's pattern-based reasoning.
Try it nowThe shift
Two ways to find out your scheme will be refused.
One costs six figures and twenty-six weeks. The other costs nothing and takes thirty seconds.
Commission, draw, submit, wait, refuse.
- Wk 0Pay architect retainer (£15-40k)
- Wk 6Drawings done, planning consultant briefed
- Wk 8Submit application, pay LPA fee
- Wk 26Refusal letter cites the same reasons used 11 times before
- Wk 27+Redesign, resubmit, or appeal. Holding costs accrue daily.
Test the scheme before you spend a penny.
- 00:00Drop the address into Rasmere
- 00:08Pick application type (rear extension, loft, basement...)
- 00:30Risk score, red flags, and the exact refusal patterns to design out
- Day 1Brief your architect with cited risks, not assumptions
- Wk 26An approval, not a refusal letter
Trust & transparency
Built on the public record. Cited, auditable, and never invented.
Every risk in your report links back to a real, published officer decision. We do not guess, we do not hallucinate, and we do not sell your data.
Sourced from planning.data.gov.uk
We ingest decisions directly from the UK government's planning data service and each LPA's published register. No scraping of paywalled sources, no second hand rumours.
Every red flag is cited
Each refusal pattern in your report names the borough, the application type, and the verbatim policy reason. You can verify it against the public officer report.
UK GDPR compliant
We store the minimum data needed to deliver your report. Your address is never sold, shared, or used to train external models. Encryption in transit and at rest.
We tell you what we don't know
If a borough has thin data or your application type is rare, the report says so plainly. Confidence is shown, not hidden behind a single number.
Risk intelligence, not legal advice
Rasmere is a decision support tool, not a planning consultant. We are upfront about the line, and your report includes a plain English limitations note.
Built by people who have lost £500k
The team has commissioned the architect, paid the consultant, and read the refusal letter. Rasmere exists because the old way is broken, not because AI is fashionable.
Position
What Rasmere is, and what it isn't.
- Pre-submission decision intelligence, used before drawings are commissioned
- Pattern analysis of refusal reasons by borough and application type
- A data product that gets sharper with every officer report ingested
- A guarantee that any application will be approved
- A replacement for an architect or planning consultant
- A crystal ball. Planning decisions can never be fully predicted
Don't pay £500k to find out your scheme was always going to fail.
30 seconds. Zero commitment. See the refusal patterns before you commission a single drawing.