REF · SL-10023198745 · RETRIEVED 19 Apr 2026, 13:02

CONSTRAINTS · HIGHPRECEDENT · HIGHUPLIFT · MEDIUM

PROPERTY · UPRN 10023198745

42 Pond Street

Hampstead · NW3 2PN · London Borough of Camden

TYPE · Terraced · MidEPC · D · 62TENURE · FreeholdCOUNCIL TAX · Band F

Likely route

Full planning required — not PD.

Property sits inside Hampstead Conservation Area (Sub-Area 3). Permitted development rights are modified. Recent approvals on this street suggest a 3m single-storey rear in matching stock brick is within policy.

Conservation AreaArticle 4 (partial)Not listedParty wall · both sides

Subject property

Coordinates · 51.5556, -0.1655

Planning designations6 checked

Conservation Area Hampstead (Sub-Area 3)planning.data.gov.uk · highApplies

Article 4 Direction HMO & shopfront onlyplanning.data.gov.uk · highPartial

Listed Building Grade II within 50mHistoric England · highNot listed

TPO zones within 30mCamden TPO register · low3 present

Flood risk EA zoneEnvironment Agency · highZone 1 · low

CPZ Controlled Parking ZoneCamden · mediumCA-G

Uplift estimate · Land RegistryConfidence: medium

Current valuation 2026 est.£1,845,000

With 3m rear + side return +18 sqm+ £246,000

With mansard loft +24 sqm+ £318,000

Street-level range 5yr £/sqm delta£13.6k–£15.8k / sqm (5yr)

Nearby precedents · within 300m, last 5 years

24 TOTAL · 19 APPROVED · 4 REFUSED · 1 PENDING

38m

Rear extension · Single-storey rear extension, 3m projection, matching stock brick SAMPLE/0001

Approved

52m

Loft conversion · Mansard loft, natural slate, 3 dormers to rear SAMPLE/0002

Approved

74m

Side return extension · Wrap-around side return + rear, 6m total SAMPLE/0003

Approved

89m

Basement · Basement excavation, single-storey under footprint SAMPLE/0004

Refused

115m

Garden room · Garden room, timber-clad, 3×4m, under 2.5m height SAMPLE/0005

Approved

142m

Rear extension · Rear extension, 4m projection, glass roof SAMPLE/0006

Refused

See every approved and refused application near 42 Pond Street, filtered by project type. Open the precedent search →

Precedent search

Recent sales · this postcode

Real · HM Land Registry

Transactions

Median

£750,000

Range

£40,000–£7,900,000

Period

2006–2025

2025-10-23POND COURT, 23, POND STREET, LONDON other · Freehold£3,300,000

2025-10-163, POND STREET, LONDON semi-detached · Freehold£7,900,000

2025-09-0431, POND STREET, LONDON terraced · Freehold£4,850,000

2021-12-1519, POND STREET, LONDON flat-maisonette · Leasehold£315,000

2021-06-2921, POND STREET, LONDON flat-maisonette · Leasehold£643,000

2021-04-067, POND STREET, LONDON flat-maisonette · Leasehold£562,500

2019-02-059, POND STREET, LONDON other · Freehold£1,000,000

2019-02-057, POND STREET, LONDON other · Freehold£1,000,000

Source: HM Land Registry Price Paid Data. Open Government Licence. Sold prices only — no floor area, so not £/sqm.

Build-cost estimate

Indicative range · not a quotation

Rear extensionConfidence: Medium

Low

£68,000

Expected

£92,000

High

£128,000

≈ 18 sqm · £3,800/sqm expected (£3,200–£4,600)

Main drivers

Conservation areaRestricted rear accessMatching stock brickParty wall both sides

Loft conversionConfidence: Medium

Low

£86,000

Expected

£132,000

High

£180,000

≈ 24 sqm · £3,700/sqm expected (£3,000–£4,500)

Main drivers

Mansard in conservation areaNatural slate finishOfficer negotiation likely

Request feasibility review

Get a human read on 42 Pond Street, NW3 2PN

For serious projects in North, Central or South West London. A RIBA-chartered team reviews your dossier — no obligation.

Siteline provides planning and cost intelligence for early feasibility only. It is not legal, planning, valuation, architectural, structural, or surveying advice. All estimates are indicative and must be verified by qualified professionals before purchase, design, planning submission, or construction.

Cost estimates are indicative only — not a quotation. Final price depends on survey, specification, structure, access, party wall matters, VAT, professional fees, and contractor availability.

Planning outcomes are not guaranteed. Local planning authorities make final decisions.

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