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Case study · Croydon

Hip-to-gable + dormer loft in Selhurst

Approved at first submission by Croydon Council in 12 weeks.

Project summary

Service
Hip-to-gable + dormer loft
Location
Selhurst, Croydon
Property stock
Edwardian terraces
Article 4 in borough
No
Process duration
12 weeks
Outcome
Approved at first submission

Completed loft conversion in London — dormer with rooflight — loft conversions in London
The brief

What the client needed

A family in Selhurst approached us for hip-to-gable + dormer loft on a edwardian terraces property. Constraints: respecting streetscape rhythm typical of Croydon, maintaining rear garden depth, and meeting Croydon Council's design expectations for the conservation context (24 conservation areas borough-wide).

Design response

How we designed it

Measured survey week 1. Three design iterations balancing internal layout against external massing visible from neighbours. Two scheme massings tested against Croydon Council's adopted design guidance. Chosen scheme matched existing roof pitch, used matching brick, set the new opening back from the eaves.

Planning route

Submission and decision

Submitted to Croydon Council via the Planning Portal. Permitted Development eligibility confirmed via parallel LDC. Officer comments minor, addressed in 5 days. Approved at first submission.

Decision recorded Croydon Council, statutory determination period.
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A printed loft conversion section drawing — rafters, ridge, the new dormer and a dimensioned head height — hip-to-gable + dormer loft in Selhurst
The loft section: head height over the stair, dormer geometry and ridge height, all to scale before anyone quotes.

Which Selhurst postcodes does this loft conversions service cover?

Every Selhurst postcode district we draw in, the stock that dominates it and the authority that validates a loft conversions there. Selhurst fees below are the statutory England rates for 2026, not loft conversions estimates.

PostcodeAreaDominant stockWhat it means for a loft conversions
SE25South Norwood / SelhurstEdwardian terracesSouth Norwood / Selhurst sits wholly inside SE25, so Croydon Council validates every loft conversions submitted from an SE25 address.
CR0CroydonEdwardian terraces, post-war flatsNeighbouring Croydon, where loft conversions work is handled by the same Croydon Council case officers.
SE19Crystal PalaceVictorian villas, Edwardian terracesNeighbouring Crystal Palace, where loft conversions work is handled by the same Croydon Council case officers.
SE19Upper NorwoodVictorian villas, Edwardian terracesNeighbouring Upper Norwood, where loft conversions work is handled by the same Croydon Council case officers.
SE25South NorwoodVictorian terracesNeighbouring South Norwood, where loft conversions work is handled by the same Croydon Council case officers.
CR7Thornton HeathEdwardian terracesNeighbouring Thornton Heath, where loft conversions work is handled by the same Croydon Council case officers.
CR8Purley1930s semi-detached, Edwardian villasNeighbouring Purley, where loft conversions work is handled by the same Croydon Council case officers.
CR5Coulsdon1930s semi-detachedNeighbouring Coulsdon, where loft conversions work is handled by the same Croydon Council case officers.
CR0AddiscombeEdwardian terracesNeighbouring Addiscombe, where loft conversions work is handled by the same Croydon Council case officers.
CR0Shirley1930s semi-detachedNeighbouring Shirley, where loft conversions work is handled by the same Croydon Council case officers.

Which Selhurst neighbourhoods suit a loft conversions best?

Roof pitch, wall build-up and plot depth change every few Selhurst streets, and each one changes what a loft conversions can achieve at that address.

How do conservation areas and Article 4 affect a loft conversions in Selhurst?

Conservation areas covering Selhurst: Croydon Council runs 24, and South Norwood, Crystal Palace, Old Coulsdon are the ones Selhurst owners meet most. A loft conversions inside a Selhurst conservation area loses permitted development, so the Selhurst submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Crystal Palace a loft conversions is judged on the street elevation first.

No blanket Article 4 over Selhurst: Croydon Council has not withdrawn permitted development across Selhurst, so a loft conversions outside a Selhurst conservation area usually keeps it. The £274 Lawful Development Certificate is still the document a SE25 owner wants on file.

What Selhurst is built from: Victorian villas in Upper Norwood and Crystal Palace; Edwardian terraces in Thornton Heath and Selhurst; 1930s semi-detached in Purley and Coulsdon; post-war in Croydon central. Large, mixed-density outer borough; permissive in outer areas; heritage controls in conservation pockets; major regeneration in central Croydon. That mix decides the loft conversions route in Selhurst more than the postcode does.

What happens if a Selhurst property sits on a boundary?

Sources for this Selhurst loft conversions page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.

Similar project in Selhurst?

Same MCIAT team. Same approval discipline.

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Structural calculations for a house extension — beam load and bending moment diagrams beside a steel section table — hip-to-gable + dormer loft in Selhurst
Calculations by our in-house structural engineer — beam sizes and load paths settled before your builder prices the job.

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