Side Return Extension Specialists in Anerley (SE20)
Professional side return extension specialists in Anerley, South East London.
Why Choose All Well for Side Return Extensions in Anerley?
We've done more side return extensions in Anerley than anywhere else, it's our home patch, and these Victorian terraces are perfect for it. The side passages along Anerley Road, Croydon Road, and the surrounding streets are typically 1.0-1.3 metres wide and run most of the depth of the house. Infilling that dead space and opening up the internal wall creates a kitchen-diner that feels like a completely different house. Being local means we can start quickly, visit easily, and keep a close eye on progress.
Every project comes with a fixed-price contract, single project manager, and full certification including Building Control sign-off.
Side Return Extensions for Anerley Properties
Anerley is known for its victorian terraces, edwardian semis, period conversions. Our side return extensions services are tailored to these property types, ensuring results that complement the character of your home.
Postcodes we cover: SE20
Side Return Extensions Tip for Anerley Homeowners
Anerley is under Bromley Council with no conservation restrictions, so side return extensions go through as permitted development. We apply for a Lawful Development Certificate as standard. It costs £129 and gives you written proof from the council that the work is permitted. Useful when you sell. The party wall between your passage and the neighbour's is usually 4.5-inch brick (a single skin), which needs careful handling during construction to avoid damaging their side. We shore it up before removing any material.
Side return extension types we build in SE20 Anerley
Three patterns cover most of what we build in Anerley. Each suits a different property type or site condition on these SE20 streets.
Standard infill and wraparound options for Anerley Victorian terraces
Standard side return infill on a Victorian terrace is the most common. The side passage, typically 1.0-1.3 metres wide and 4-6 metres deep, is infilled with a steel-framed structure, glazed roof, and Crittall-style or thermally broken aluminium glazing on the new external wall. Combined with knocking through the existing kitchen wall, the result is a wider open-plan kitchen-diner. The work covers structural steelwork, foundations on the local mix of clay and gravel, glazing, electrics, plumbing, and finishes. Build time 8-12 weeks. Side return plus rear extension (wraparound) is the second pattern, common on wider terraces along Anerley Road and the streets towards Beckenham where there's both a usable side return and a deep rear garden. Build time 12-16 weeks, producing a kitchen-diner of 25-35 square metres.
Hillside side returns on the streets sloping towards Penge
The third pattern applies to lower-slope properties on streets sloping down towards Penge. The side passage drops noticeably from front to back, so the foundations step down the slope rather than running level, with the additional groundwork that involves. Build time 10-14 weeks. The structural engineer specifies stepped foundation depth based on a trial hole and slope assessment.
Party walls, groundwater, and planning for Anerley side return extensions
Three site-specific factors affect how we approach every Anerley side return. Understanding them upfront avoids delays and disputes.
Single-skin party walls on Anerley Road, Croydon Road, and Selby Road
The Victorian terraces along Anerley Road, Croydon Road, and Selby Road typically share a 4.5-inch single-skin brick wall with the neighbour's side return. This is thinner than a standard 9-inch party wall and needs careful handling. We shore the wall up internally before removing any material on our side, and inspect both faces before signing off the structural connection. Damage to the neighbour's side from poor handling is one of the most common party wall disputes; we avoid it by surveying carefully and bracing properly. Party Wall Act 1996 requirements apply on virtually every Anerley side return because the new structure shares a boundary wall with the neighbour. Notice must be served at least two months before work starts. The neighbour can consent in writing or dissent and appoint a surveyor, whose fees apply if the neighbour dissents. We serve party wall notices early in every project so the schedule isn't delayed.
Permitted development and Lawful Development Certificates under Bromley Council
Anerley falls under London Borough of Bromley and has no conservation zones, so permitted development rights apply on virtually every property. The standard 3-metre rear projection limit covers most side returns without a full planning application. We submit a Lawful Development Certificate, the fee is £129 at Bromley, and the process takes 6-8 weeks, for written confirmation from the council. This protects the property at sale time. Larger projections of 4-6 metres on semi-detached or detached properties go through the Larger Home Extension prior approval process (8-week neighbour consultation). Front-facing changes need full planning regardless. Properties on the lower slopes near Penge have higher persistent groundwater than those higher up, which affects foundation design. Wetter soil compresses differently and may need a wider foundation or short piles. We always do a trial hole on lower-slope properties before finalising the foundation design.
How we manage an Anerley side return from survey to handover
A side return in SE20 involves 10-13 trades over 8-14 weeks. We assign one project manager from survey through handover with photo updates throughout the build.
What's included in our fixed-price Anerley side return contract
Fixed-price contracts cover labour, materials, structural engineer calculations (covering steel and foundation design), Building Control fees at Bromley, FENSA glazing registration, party wall surveyor coordination, stepped foundation design where needed, and the LDC or planning fee. The price is confirmed after a free site visit and doesn't change unless the specification does. Building Control inspections happen at foundation, DPC, drainage, structural steel, insulation (Part L: U-value 0.18 W/m²K for new walls and roof), and completion. Glazing is FENSA-registered to U-value 1.2-1.4 W/m²K. Origin or Schüco bifolds, Crittall steel-framed glazing, or thermally broken aluminium are standard. Roof construction is warm-roof with 150mm PIR insulation. Underfloor heating across the new floor area is standard. Electrical work is NICEIC-certified to BS 7671. Proximity matters more on a side return than on most projects. Our office is five minutes from any Anerley property, which means daily site visits, same-day surveys, and snag fixes are practical. Decorators and builders travelling from across London charge for return visits or rush the schedule to avoid them. We don't.
Side Return Extensions in Anerley: What's Included
How I price side return extensions in Anerley
I price every side return extensions job in Anerleyafter I’ve seen it. No two properties are the same, so a number here would only mislead you. What you get instead is a fixed-price contract, a week-by-week programme, and no costs that turn up later.
Get a fixed quoteWhat Our Customers Say
“All Well managed our project from start to finish. The fixed-price contract meant no surprises, and the result is stunning.”
Verified Customer
Anerley
“Professional team, clear communication throughout. They handled everything including Building Control sign-off.”
Verified Customer
Anerley
Frequently Asked Questions
- What's involved in an Anerley side return extension?
- Standard side return infill on a Victorian terrace fills the side passage with a steel-framed structure, glazed roof, and Crittall-style or thermally broken aluminium glazing, then knocks through the existing kitchen wall for a wider open-plan kitchen-diner. Side return plus rear extension (wraparound) goes further back where there's a deep rear garden. Hillside side returns on lower-slope streets near Penge use stepped foundations to follow the slope, and persistent-groundwater sites may need piled or wider foundations confirmed by a trial hole. We give a fixed-price contract confirmed after a free site visit, and the price doesn't change unless the specification does.
- Will my Anerley side return need planning permission?
- Usually no. Anerley falls under Bromley Council and has no conservation restrictions, so permitted development rights apply on virtually every property. The standard 3-metre rear projection limit covers most side returns, and most don't extend any further back than the existing rear wall. We submit a Lawful Development Certificate (£129, 6-8 weeks at Bromley) for written confirmation, which protects the property at sale time. Larger Home Extension prior approval covers 4-6 metre projections on semi-detached or detached properties. Front-facing changes need full planning regardless.
- How does the Party Wall Act apply to my Anerley side return?
- It applies to virtually every Anerley side return because the new structure shares a boundary wall with the neighbouring property. The Anerley Victorian terraces typically have a single-skin 4.5-inch party wall (thinner than the standard 9-inch), which needs particularly careful handling during construction to avoid damage to the neighbour's side. The structural steelwork connection to the party wall and the new wall foundations on the boundary line both fall under the Party Wall Act 1996. Notice must be served on the adjoining owner at least two months before work starts. A surveyor's fees apply if the neighbour dissents. We serve party wall notices early in every project.
- Why hire All Well for an Anerley side return?
- Three reasons. First, proximity: our office is on Limes Avenue, SE20, five minutes from any Anerley property. We've built more side returns here than anywhere else, typical foundation conditions on the lower slopes, single-skin party wall handling, hillside groundwater diagnosis. Second, full accreditation: NICEIC electrical (BS 7671), FENSA glazing, structural engineer calculations, and Bromley Building Control sign-off included on every project. Third, fixed-price contracts: the quote doesn't change unless the specification does, including stepped foundations, party wall surveyor coordination, and any wider-foundation design on persistent-groundwater sites.
All Well has completed 100+ projects across 25 London boroughs since 2020. We are NICEIC approved for electrical work, FENSA registered for glazing, and CHAS certified for site safety, with Public Liability insurance to £5 million. 57+ Google reviews average 4.5 stars. All Well Property Services® is a UK registered trademark, Companies House no. 12721034, operating from Unit 1 Limes Avenue, Anerley SE20 8QR.
Side Return Extensions Near Anerley
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