Lewisham Council Approves 20-Flat Scheme at Longton Avenue Sydenham 2026

Key Points

• Planning Approval Granted: Lewisham Council’s Planning Committee B voted six to one (with one abstention) to approve a five-storey, 20-flat development at 27 Longton Avenue in Sydenham.
• Substantial Unit Increase: The revised proposal by developer Tengu Ltd more than doubles the previously approved four-storey, eight-unit residential project.
• Housing Composition: The revised design replaces large, four-bedroom duplexes with 20 self-contained apartments, including 11 two-bedroom and nine three-bedroom family units.
• Financial Contribution: The development contains zero on-site affordable housing units; Tengu Ltd will instead pay a £67,246 commuted sum in lieu towards borough-wide affordable housing.
• Local Opposition: The application received 41 public objections, along with formal resistance from local organisations including The Sydenham Society, the Sydenham Hill Ridge Neighbourhood Forum, and the Longton Avenue Residents’ Association.
• Design & Site Features: Designed in a “villa style” using pale brick, cast stone, and hardwood timber, the car-free scheme retains a portion of a Site of Importance for Nature Conservation (SINC) at the rear as a communal garden.

Sydenham (South London News) August 20, 2026 — Lewisham Council’s Planning Committee B resolved to approve planning permission for a five-storey residential building comprising 20 flats at 27 Longton Avenue, adjacent to Sydenham Wells Park. The decision authorises a substantial intensification of the vacant site, expanding upon an eight-home scheme that had previously received local authority approval.

What Are the Core Details of the Approved Sydenham Flat Block Scheme?

As reported by Ruby Gregory, Senior Local Democracy Reporter for My London, developer Tengu Ltd secured approval to construct a five-storey building housing 20 self-contained apartments on the plot located at 27 Longton Avenue, SE26. The plot has sat vacant since October 2023, when a original two-storey detached house was demolished.

In April 2025, Lewisham Council granted planning consent for a four-storey building comprising eight large, four-bedroom duplex apartments.

However, Tengu Ltd submitted revised proposals to add an additional storey, lower individual unit sizes, and raise the density to 20 apartments. Under the revised plans, the project will feature 11 two-bedroom units and nine three-bedroom family units.

As reported by London Now, the physical design of the property aims to replicate two “villa style” homes. The upper levels step back from the facade to reduce visual bulk. Architectural materials outlined in the submission include pale brick, cast stone, and hardwood timber.

The site sits adjacent to Sydenham Wells Park, with roughly half the plot designated as a Site of Importance for Nature Conservation (SINC).

The developer plans to retain the rear woodland as a communal garden for future occupants, retaining existing woodland footpaths. While six mature trees will be removed to facilitate construction, the applicant commits to planting six new native trees and maintaining a net gain in overall site biodiversity.

The development will operate as a car-free scheme, providing no off-street parking for residents, though it allocates 40 secure cycle parking spots alongside two visitor spaces. A dedicated Blue Badge disabled parking space may be added on Longton Avenue.

Why Did the Developer Submit Revised Plans for More Homes?

As noted by Senior Local Democracy Reporter Ruby Gregory of My London, a representative for Tengu Ltd stated during the Planning Committee B meeting on August 12, 2026, that the original eight-unit scheme was no longer financially viable.

The developer’s representative informed committee members that the project was on a “brink point” of delivery due to mounting economic pressures.

The representative noted that major concessions were made regarding developer profitability, emphasizing that the revised application represented a compromise to create an efficient, deliverable housing scheme without over-developing the land.

As reported by My London, Pete Tanner, a planning consultant at Stantec representing the project, stated that the original four-bedroom duplexes were overly large. He noted that the plot at 27 Longton Avenue is uniquely oversized—roughly four times larger than a standard plot along Longton Avenue—which keeps the overall building-to-plot ratio low despite the density increase.

Tanner added that while the unit count has increased significantly, the net floor area increase across the whole building stands at approximately 13 per cent.

What Objections Were Raised by Residents and Local Groups?

As reported by Open Council Network, Planning Committee B granted approval despite receiving 41 formal public objections, alongside eight representations in support and six general comments.

Strong opposition was formally registered by local civic bodies, including the Longton Avenue Residents’ Association, the Sydenham Hill Ridge Neighbourhood Forum, and The Sydenham Society.

As reported by Ruby Gregory of My London, The Sydenham Society voiced concerns that the expanded proposal constituted an “over-development of the site” that sits out of character with the surrounding conservation area and local streetscape. The Sydenham Hill Ridge Neighbourhood Forum raised concerns regarding the overall “intensification of development” compared to the 2025 consent.

Community objectors also cited potential issues regarding:

• Natural underground springs and localized drainage patterns.
• Structural scale, with the building measuring up to 15.2 metres in total height—making it up to 3.5 metres taller than the earlier four-storey scheme.
• Height impacts within the Sydenham Ridge Area of Special Local Character.
• Increased pressure on on-street parking due to the car-free design and low public transport accessibility ratings in the immediate vicinity.

As reported by My London, a resident living on Longton Avenue who spoke against the project during the public gallery section stated:

“This proposal adds an entire fifth storey, increased depth and 12 additional flats. It is up to 3.5 metres taller than the approved scheme and up to 15.2 metres in total.”

Regarding parking pressure, London Now reported that a local parking survey submitted with the application indicated that overnight parking space occupancy in surrounding streets sits at roughly 34 per cent. Developers estimated that overnight parking stress in the surrounding area could rise to around 40 per cent once all 20 units are fully occupied.

How Did Planning Officers and the Committee Justify Approval?

As reported by Open Council Network, Lewisham Council planning officers acknowledged that the five-storey height causes some localized daylight reductions for nearby properties and introduces limited harm to the character of the immediate area.

However, planning officers concluded that these localized impacts were not severe enough to outweigh the public benefits of delivering new residential capacity—specifically nine family-sized apartments—at a time when Lewisham Council faces significant shortfalls against its housing delivery targets.

As reported by Ruby Gregory for My London, the scheme will deliver zero on-site affordable housing, social rent, or intermediate housing units.

To satisfy planning obligations, Tengu Ltd entered into a legal agreement to pay a commuted sum of £67,246 towards off-site affordable housing provision across the broader Borough of Lewisham.

Following deliberations, Planning Committee B voted six in favour, one against, and one abstention to authorize the grant of planning permission, subject to section 106 legal agreements.

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Background of the Development

The site at 27 Longton Avenue has been a subject of planning discussions within the London Borough of Lewisham for several years. Situated in a leafy, residential area directly bordering Sydenham Wells Park, the site originally contained a substantial two-storey single-family detached dwelling set back within a large wooded lot.

In late 2023, the original house was demolished after preliminary works were authorized. In April 2025, Tengu Ltd secured its first formal permission (DC/25) for a boutique residential block containing eight high-end, four-bedroom family duplexes.

However, broader structural shifts across the UK construction sector between 2024 and 2026—including elevated build costs, changing interest rates, and shifting housing market demand away from oversized luxury units—rendered the original low-density design financially unviable.

In response, the applicant redesigned the interior and top elevation to submit a revised application maximizing unit yield, converting large luxury duplexes into smaller two- and three-bedroom apartments.

Prediction: How This Development Can Affect the Local Community

The approval of the 20-flat development at 27 Longton Avenue is set to have localized effects across three primary groups:

• Nearby Residents and Homeowners: Property owners on Longton Avenue and adjacent streets will likely experience increased demand for on-street parking. Although designated as a car-free development, visitors, delivery vehicles, and residents owning cars may contribute to the projected increase in local street parking stress from 34 per cent to 40 per cent. Neighboring properties immediately adjacent to the 15.2-metre structure may also experience minor reductions in natural daylight.
• Local Homebuyers and Families: The delivery of 20 new homes, including nine multi-bedroom family properties, offers additional housing stock in Sydenham. However, as none of the 20 flats are classified as on-site affordable or social housing, the immediate impact will benefit market-rate buyers and renters rather than households seeking subsidized options.
• The Broader Sydenham Community and Planning Precedents: The decision highlights Lewisham Council’s willingness to prioritize overall housing delivery targets over localized density concerns. This outcome may encourage other property owners along the Sydenham Ridge Area of Special Local Character to submit similar applications to increase unit counts on oversized plots.