Development Intent
AtlasMertonOfficersLan Pham
Case officer · Merton Planning

Lan Pham.

Active — last recorded decision May 2026

A case officer at Merton with an approval rate of 83% across 498 decided planning applications, spanning 17 wards.[1] Decision speed and appeal performance publish when decision notices are ingested.

Planning officer498 decisions83% approvalSave
Merton · 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 →
498
Applications
2022–26
Approval rate over time — tougher or softer 🔒Dashed line = London average
avg 81%92%202276%202374%202487%202596%2026
Approval-rate trend is subscriber dataSubscribe to see the trend →
What they decide — by application type
How they compareVersus peers
Approval rate83% · 11th of 17
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 reports248 officer reports parsed
13%
Approves despite concerns
of approvals record a documented reservation
3%
Negotiated approvals
approvals mentioning revisions/amendments
1%
"On balance" reports
reports using explicit balancing language
59%
Bespoke reasoning
of report text written for the case, not recited
What they write about — vs Merton's average officer

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

Precedent & consistency
1.65× borough avg
Flooding & drainage
1.45× borough avg
Transport & parking
1.12× borough avg
Outlook & amenity
0.99× borough avg
Privacy & overlooking
0.85× borough avg

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

How they reason — coded from their reports

Pham's caseload mixes routine householder extensions, vehicle-crossover applications and GPDO Certificate-of-Lawfulness assessments, and her vehicle-crossover reports consistently cite the Council's own Highway Engineer's separate technical approval (by its own reference) as the determining factor once a design/character check has been passed. Her Certificate-of-Lawfulness refusals are grounded in a single measured GPDO Class A breach (extension width exceeding half the house width once it passes a side elevation) stated as the sole determining fact, and her heritage/conservation-area refusals quote an adopted Conservation Area Design Guide's own explicit roof-form prohibition verbatim rather than reaching an independent character judgement.

Observable habits

· on vehicle-crossover applications, treats the Council's own Highway Engineer's separate technical approval (cited by its own reference number) as the determining factor once a character/design check has been passed

· on GPDO Class A refusals, isolates a single measured breach (e.g. extension width exceeding half the house width once past a side elevation) as the sole stated determining fact

· cites the exact wording of an adopted Conservation Area Design Guide (e.g. a hipped-roof prohibition) verbatim as a direct textual bar rather than reaching an independent character judgement

What their reports consistently look for

· whether the Council's own Highway Engineer has separately approved a vehicle crossover, cited by its own reference

· the precise GPDO Class A measurement (extension width vs house width, position relative to a side elevation) determining compliance

· whether an adopted Conservation Area Design Guide explicitly prohibits the specific roof form proposed

Assigned Lan Pham 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

The applicant has received approval from the Council's Highway Engineer for a vehicle crossover on 18th October 2022. (22/P2474) Consequently, with no objection received by the Highways team, the proposed vehicle crossing is considered acceptable

22/P0651

The Westcoombe Conservation Area Design Guide states that "The hipped roof style should not be changed as this is an integral part of the character of the area and it contributes to the regular and uniform rhythm of the building mass along the street. Any extension into the roof space should not therefore convert the hipped roof into a gabled roof

22/P2265

Measured from 248 published Merton 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 248 parsed reports. Whether refusals citing each survive appeal isn't traced per policy yet.

D3List of Buildings of Special Architectural or Historic Interest
102 times cited
DM D2
94 times cited
CS14Design. Strategic
92 times cited
D4
91 times cited
DM D3
74 times cited
CS20Parking, Servicing and Delivery. Strategic
30 times cited
T6
29 times cited
CS18Active Transport. Strategic
27 times cited
Which policies this officer leans on is subscriber intelligenceSubscribe to unlock →
Decisions by ward

Where this officer's caseload concentrates, 2022–26.[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
26/HOUSE/0604
Householder
Approved
2026-06-02
26/HOUSE/0559
Householder
Approved
2026-06-02
26/HOUSE/0604
Householder
Approved
2026-06-02
26/HOUSE/0559
Householder
Approved
2026-06-02
Full application history locked
Subscribe to see all 498 decisions →
Consultants approved most— subscriber data
1. Planning Additions
2. CANOPY PLANNING SERVICES LTD
3. RDK Civil Engineering Limited
4. Resi Design Ltd
At a glance
OfficerLan Pham
BoroughMerton
RolePlanning officer
Experience
Applications498 (2022–26)
Approval rate83%
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 Merton planning register and published decision notices, 2022–26. · 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 — Merton's decision-notice parsing is limited coverage, so no borough or officer figure is shown.
  4. [4]"How this officer decides", the policy playbook and all quotes — parsed from 248 published Merton 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.