Chimney Breast Removal Potters Bar

Removing a chimney breast frees up floor area on one or both floors, and it takes support away with it. GS Renovation removes breasts in Potters Bar to a structural engineer's design: a steel beam, which is now the usual route, or gallows brackets only where the engineer and building control accept them. Indicative London ranges, MyBuilder and Checkatrade, 2026: one floor on a steel beam, £2,200 to £3,250; one floor where gallows brackets are accepted, £1,500 to £2,500; two floors, £3,000 to £5,000.

For Potters Bar, on London-derived ranges removing a breast on one floor typically costs £2,200 to £3,250 on a steel beam, and £3,000 to £5,000 across two floors; Hertfordshire work generally runs below that. GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Potters Bar.

How the job runs

1. Free site survey at your Potters Bar address: which floors the breast runs through, a shared stack, any live flue.
2. The engineer we appoint designs the support, and the work is registered with Hertfordshire Building Control or an approved inspector. On a shared wall you serve the party wall notice as building owner; we supply the drawings.
3. The floor above is propped and the breast comes down in courses from the top; what remains sits on the support the engineer specified.
4. Building control inspects the support before it is covered. We make good, and the completion certificate follows.

What approval a chimney breast removal needs

Building regulations approval. Hertfordshire Building Control names removing chimney breasts as a structural alteration to an existing building that needs it. Whatever is left above has to be supported or taken down as well, and that decision belongs to the engineer.

Hertfordshire Building Control states that structural calculations should be designed or checked by a Chartered Structural Engineer, MIStructE, and that an additional fee of £75 plus VAT may apply if its consultant engineers have to review them. Whether a steel beam is used, which is now the usual route, or gallows brackets are accepted follows from that design, which is why we settle it before the price is fixed.

Housing in Potters Bar

Of the 9,780 homes the valuation list records in Potters Bar, 3% were built before 1919, 37% between the wars and 59% since 1945; 24% are flats and 76% are houses. The shared stack of a semi in Potters Bar means a party wall notice before removal, and 36% of homes here are semi-detached.

Chimneys in the Royds Conservation Area

Changing one needs planning permission. An Article 4 Direction covering The Royds Conservation Area was confirmed in July 2015, and inside that area planning permission is required for changes to any chimney, including its removal. Hertsmere's Royds design guide asks owners to retain original chimney stacks and pots, and calls them a distinctive feature of the Hicks house designs. It states that proposals resulting in the loss of an original stack will not be supported.

There is a cost to the application now. Applications made because of the Royds Article 4 Direction were originally free of charge, but Hertsmere Borough Council states that the government removed that exemption on 17 January 2018 and a fee is now payable. For a Royds address, that is the first thing to check.

Why the stack above is part of the street's appearance

Because the conservation area documents single it out. The Royds appraisal lists tall brick chimney stacks among the typical features of the estate's houses. The same list includes Tuscan columns and oriel bay windows on the larger bungalettes, brick quoins, neo Tudor half timbered elements on front facing gable ends and peg tile roofs. The appraisal records the lowering of the original brick chimney stacks as one of the changes that has negatively affected the architectural cohesiveness of the estate.

Darkes Lane (West) tells the same story in render. There are sixteen two storey houses around the two private communal greens on Heath Drive. They share rendered walls, hipped concrete tile roofs, rendered chimney stacks, red tile window sills and central exposed brick porches. Taking the breast out internally while leaving the stack supported above is one route, and it is a structural decision as much as a visual one.

• Roof tiling, flashing and leadwork made good
• Rubble bagged and carried out rather than dropped inside
• Soot and debris contained with screens and sheeting

VOA Council Tax stock of properties, March 2025, for Potters Bar Parkfield, Potters Bar Furzefield and Potters Bar Oakmere. Counts rounded by the VOA.

Related reading for Potters Bar homeowners planning chimney breast removal: home renovation in Potters Bar, chimney breast removal in Hadley Wood, how building control signs off a chimney breast removal, the Party Wall Act for a breast in a shared wall, how we handle chimney breast removal across London and Building Regulations Explained.

The GS Renovation Difference in Potters Bar

Two questions get answered before we quote, not after: what holds the stack up, and whether the change needs planning permission as well as building regulations approval. Inside the Royds the chimney itself is controlled, and everywhere the removal is a structural alteration requiring building regulations approval. We appoint the structural engineer, build to their design, and coordinate the application and inspections. Free, no obligation quotations, and GS Renovation Ltd is fully insured.

Checked by Abdelaaziz Saaid, founder and director of GS Renovation Ltd (Companies House no. 14611254). Structural design is by the consulting engineer appointed to your project.