Development Intent
AtlasWestminsterOfficersSarah De La Coze
Case officer · Westminster Planning

Sarah De La Coze.

Active — last recorded decision May 2026

A case officer at Westminster with an approval rate of 93% across 70 decided planning applications, spanning 2 wards.[1] Decision speed and appeal performance publish when decision notices are ingested.

Planning officer70 decisions93% approvalSave
Westminster · ward map
Approval rate — by ward
Lower ~68%
Higher ~90%
ShowingAll years · subscriber →across all years on record — a period re-scopes the headline figures and the trend
At a glanceEach metric links to the investigation behind it
All investigations →
70
Applications
2024–26
Approval rate over time — tougher or softer 🔒Dashed line = London average
avg 81%100%202492%202586%2026
Approval-rate trend is subscriber dataSubscribe to see the trend →
What they decide — by application type
How they compareVersus peers
Approval rate93% · 24th of 76
higher is betterdashed = London avg
Decision time · publishes with decision notices
in development
Appeal overturn · publishes with decision notices
in development
How this officer decides — from their own reports37 officer reports parsed
54%
Approves despite concerns
of approvals record a documented reservation
39%
Negotiated approvals
approvals mentioning revisions/amendments
5%
"On balance" reports
reports using explicit balancing language
80%
Bespoke reasoning
of report text written for the case, not recited
What they write about — vs Westminster's average officer

Topic mentions per 1,000 words of their own report text (boilerplate stripped), indexed against all parsed Westminster reports. Attention, not stance.

Daylight & sunlight
2.63× borough avg
Privacy & overlooking
1.69× borough avg
Noise & disturbance
1.42× borough avg
Outlook & amenity
1.18× borough avg
Transport & parking
1.17× borough avg

Mark = borough average (1×). Bar capped at 2×.

How they reason — coded from their reports

De La Coze treats an already-existing level of mutual overlooking (between a flat and a shared courtyard) as the baseline against which a proposed intensification is judged, consistently concluding a scheme 'would not increase overlooking to an unacceptable level' rather than requiring zero additional overlooking. She checks whether a near-identical scheme was PREVIOUSLY approved for the same site but never implemented, treating that unimplemented precedent as strong support for re-approving the same design.

Observable habits

· treats already-existing mutual overlooking (a shared courtyard, existing rear windows) as the baseline, judging only whether a proposal materially INCREASES it beyond that existing level

· checks whether a near-identical scheme was previously approved for the same site but never implemented, treating that unimplemented precedent as strong support for re-approving the same design

· credits a negotiated amendment (removing a shared walkway, changing a glass balustrade to metal) made specifically to reduce a neighbour's overlooking objection

What their reports consistently look for

· what this officer's reports consistently look for: whether a proposal materially increases overlooking beyond an already-existing baseline level, not whether any overlooking exists at all

· what this officer's reports consistently look for: a near-identical scheme previously approved (even if unimplemented) for the same site

· what this officer's reports consistently look for: specific negotiated amendments made during the application to reduce a neighbour's overlooking objection

Assigned Sarah De La Coze on a live case?What they pay attention to, how they reason, and what their reports consistently look for — so you can address it before they raise it.Subscribe to unlock →
In their own words

This level of overlooking is already in existence with the first floor flat, officers therefore consider that the creation of a single 4 bed dwelling in place of the existing office and first floor flat would not increase overlooking to an unacceptable level

24/04358/FULL

A proposal for a single storey garden room of the exact same size and height was previously approved ref. 13/12915/FULL but the proposal was never implemented

24/04687/FULL

Measured from 37 published Westminster officer reports written by this officer, with recited policy boilerplate stripped before any counting. These describe how this officer works and writes — they are not outcome predictions. Every quote is from a named public report.

Policy playbook — what this officer cites[3]

The policies this officer cites most in their own reports — times cited across 37 parsed reports. Whether refusals citing each survive appeal isn't traced per policy yet.

PR3
2 times cited
B2
2 times cited
MRU2.1
1 times cited
MRU2.2
1 times cited
MRU2.3
1 times cited
Which policies this officer leans on is subscriber intelligenceSubscribe to unlock →
Decisions by ward
Ward
Decisions
Approval rate

Where this officer's caseload concentrates, 2024–26.[1] Click the map above to focus this page on a ward, or a row to open the ward.

Recent applications
Address
Reference
Type
Outcome
Date
25/06949/FULL
Full Planning Permission Application
Approved
2026-06-09
26/02576/FULL
Full Planning Permission Application
Approved
2026-06-01
25/06949/FULL
Full Planning Permission Application
Approved
2026-06-09
26/02576/FULL
Full Planning Permission Application
Approved
2026-06-01
Full application history locked
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Consultants approved most— subscriber data
1. Savills (UK) Limited
2. Montagu Evans LLP
3. Howard de Walden Estates ltd
4. Howard De Walden Estate
At a glance
OfficerSarah De La Coze
RolePlanning officer
Experience
Applications70 (2024–26)
Approval rate93%
London approval avg81%
Who decides here
GovernmentMayor of LondonCouncilCommitteeOfficersDecisionsApplicantsInspectorate
Related investigations
When committees overrule officers like this one →
How often members depart from officer recommendations, and how those overrides fare at appeal.
How much gets decided without a committee →
The delegated share by borough and officer — where the real power over decisions sits.
Sources & method
  1. [1]Applications decided, approval rate, per-year trend and ward breakdown — London Borough of Westminster planning register and published decision notices, 2024–26. · methodology
  2. [2]Appeal overturn and decision-time benchmarks — Planning Inspectorate (PINS) appeal decisions and application date pairs; not yet computed per officer, shown as a dash until they are. · PINS appeals casework
  3. [3]Condition load — mean effective conditions attached to Westminster decision notices (grant/split), parsed from the published notice text; a borough figure, not yet split per case officer.
  4. [4]"How this officer decides", the policy playbook and all quotes — parsed from 37 published Westminster officer reports written by this officer, recited policy boilerplate stripped before counting; disposition text coded from their own reasoning with every quote machine-verified verbatim. Descriptive of how they work — not outcome predictions.
Methodology is published in full so every number is traceable to its primary source.