View of the Strata from New Kent Road
|Location||8 Walworth Road, Southwark, London SE1 6EE, SE1 6EG, SE1 6EH, SE1 6EJ, SE1 6EL|
|Cost||over £113 million |
|Roof||148 m (486 ft)|
|Floor area||306,000 sq ft (28,400 m2) GEA / 255,000 sq ft (23,700 m2) NIA|
|Design and construction|
|Structural engineer||WSP — Structural, M&E Engineer, Acoustic Consultants and Fire Engineer|
|Main contractor||Brookfield Construction|
Strata SE1 (known in development as Castle House and informally known as The Razor, and sometimes locally nicknamed "Isengard") is a multiple-award-winning 148-metre, 43 storey, 408 flat skyscraper at Elephant and Castle in the London Borough of Southwark in London, England. Designed by BFLS (formerly Hamiltons), it is one of the tallest residential buildings in London and will be home to more than 1,000 residents.
 The building
Strata SE1 is located on the site of Castle House, an early 1960s six-storey office building, which was the first commercial premises at the newly rebuilt Elephant and Castle. When completed, Castle House was warmly received. The Architects’ Journal in August 1962 found "little to criticise and much to praise and until New Zealand House is completed it is possibly one of the best examples for anyone wanting to look at a good office block in London."
25% of the building's flats have been sold by Family Mosaic Housing Association for shared-ownership sale. These consist of the "Esprit Apartments" — located on floors 2–10 of the tower — and a further nine flats in the adjacent "Pavilion", a three-storey structure located to the west of the tower and earmarked for former residents of the nearby Heygate Estate.
Each floor of the affordable area comprises 10 flats (equally divided between one and two-bedroom flats), while the floors above the 10th floor contain 11 flats in a mixture of studios (40), one-bedroom flats (149), two-bedroom flats (101) and three-bedroom flats (20) to a total of 310 units.
Only the open-market flats have access to car-parking (in the basement of the building). The 39th floor features a "Sky Lobby" (a small corridor with a view over central London), while the living area is topped by a £2.5m three-bedroom duplex penthouse. The ground floor comprises two commercial units. A third one is located in the Pavilion, along with a "kiosk". All three remain unoccupied although Inara (for the kiosk), Costa Coffee and Crussh have shown interest in the retail units 
The building has its own extranet site, named "inhabit".
The one-level basement of the building contains a secure car park and 437 bicycle storage places.
The current tower was first proposed in 2005; construction began in 2007 and was completed in June 2010. The cost is estimated at £113.5 million. The building was 'topped out' in June 2009. Attended the topping out ceremony were over 70 senior members of London’s business community including Sir Simon Milton, Deputy Mayor for Policy and Planning, Cllr Nick Stanton, Leader of Southwark Council and Simon Hughes, MP for North Southwark and Bermondsey.  The turbines were installed in May 2010.
During the demolition of Castle House to clear land for Strata, a construction worker, John Walker, 33, was killed when a roof collapsed on him. He was employed by 777 Demolition and Haulage Company Ltd, which was served with a Prohibition Notice by the Health & Safety Executive. An inquest was due to be held at Inner London South Coroner's Court.
||The neutrality of this section is disputed. (September 2012)|
The three nine-metre wind turbines at the top of the building are rated at 19 kW each and are anticipated to produce 50MWh of electricity per year. They are expected to generate sufficient energy to provide power for the common areas of the building (8% of the energy needs of the building), although questions about their real efficiency will remain unanswered until the completion of two years of comprehensive wind data analysis.
The building exceeds by 13% the current UK regulations relating to sustainability, whilst overall carbon emissions are expected to be 15% lower than the Mayor of London's good practice benchmark. The developers claim that the building will achieve 2050 CO2 target emissions and that (with the Multi-Utility Services Company in place in the area) it will achieve a predicted 73.5% reduction in CO2 emissions when measured against the Building Regulations benchmark.
Featured on-site is a combined heat and power system to provide sustainable power generation, with a provision for the collection of rainwater for re-use. The energy costs per flat are envisaged to be up to 40% less than Britain's typical housing average. The building is clad in a "bespoke high thermal performing facade" with an air permeability leakage rate that is apparently 50% better than current building regulations.
Considerate Constructors Scheme
- Bronze Award 2010 – Strata SE1
- Gold Award 2011 – Strata SE1
On 12 November 2010, the building was the overall winner of the 2010 Concrete Society Awards, ahead of schemes from David Chipperfield, Hopkins Architects, Caruso St John, McInnes Usher McKnight Architects (MUMA) and Alsop Architects. The judges commented: "This building is striking architecturally, a considerable feat of construction on this restricted site...". They particularly singled out Strata’s "innovative column strategy".
Structural Steel Design Awards 2010
- 3 Bronze Awards for Strata SE1 - Awarded to Principal Contractor - Brookfield Multiplex Construction Europe Ltd, Developer - Brookfield Europe & Subcontractor - Bourne Steel
City of London Sustainable City Awards 2011
- Highly Commended for Resource Conservation - Strata SE1
- Highly Commended for Sustainable Building - Strata SE1
In May 2011, the building was shortlisted for the ICE London Civil Engineering Awards 2011 for infrastructure and building projects. The award "celebrates outstanding engineering achievement by companies, organisations, and individuals in the capital".
The Green Apple Awards 2011
- Strata SE1 – Environmental Best Practice - Sustainability Sector of Building and Construction (award ceremony November 2011)
RICS Awards 2011
- Regeneration Runner-Up – Strata SE1
London District Surveyors Assocation 2011
- Best Sustainability Project Strata SE1 – for the recognition of high standards of construction and workmanship
ACE Engineering Excellence 2011
- Building Services – Strata SE1
The Strata Inhabit website (the information site for residents of the building) won "Website of the Year" at the News on the Block Property Management Awards on 5 December 2011.
In August 2010, Strata SE1 was awarded the 2010 Carbuncle Cup. The yearly award, organized by Building Design magazine, selects one building from a shortlist of 30, nominated by readers. It recognises "the ugliest building in the United Kingdom completed in the last 12 months".
- "STRATA BUILDING aka RAZOR: How Buildings Make Its Own Energy ‹ 5election - The International Coolhunting Magazine" (in (Italian)). 5magazine.wordpress.com. 2011-03-17. Retrieved 2012-04-06.
- Susan DeFreitas (15 March 2010). "London’s New Strata Skyscraper Incorporates Wind Turbines". EarthTechling.com. EarthTechling LLC. Retrieved 17 March 2010.
- "Elephant's carbuncle". Daily Telegraph. 12 August 2010. Retrieved 23 January 2013.
- "Draper Estate". Past-War Buildings. 2007. Retrieved 6 December 2010.
- "Strata SE1 43-storey tower at Elephant & Castle 'topped out'". London SE1 Community Website. Bankside Press. 8 June 2009. Retrieved 14 June 2009.
- "Brookfield Tops Out "Strata SE1", Central London's Tallest Residential Scheme". Brookfield. Brookfield. 5 June 2009. Retrieved 23 January 2013.
- "Details of Work-Related Deaths in London in 2007". corporateaccountability.org (accessed through webcache.googleusercontent.com). Centre for Corporate Accountability. 2 August 2010. Retrieved 15 April-2 August 2010.
- "Notice 300831073 served against 777 Demolition and Haulage Company Ltd on 02/08/2007". HSE Public Register of Enforcement Notices. Health & Safety Executive. 2 August 2007. Retrieved 15 April 2010.
- Ariel Schwartz (15 March 2010). "Strata Tower: The First Building With Wind Turbines Incorporated Into Its Design". FastCompany.com. Mansueto Ventures LLC. Retrieved 9 August 2010.
- "Strata tower: A skyscraper with wind turbines incorporated in its design". Designlaunches.com. Designlaunches.com. 17 March 2010. Retrieved 9 August 2010.
- "Strata, London, United Kingdom". Emporis.com. Emporis Corporation. Retrieved 9 August 2010.
- "BFLS complete Strata SE1 — first building in the world with integral wind turbines". worldarchitecturenews.com. World Architecture News. 3 August 2010. Retrieved 9 August 2010. "The result demonstrates that Strata SE1 will achieve a predicted 73.5% reduction in CO2 emissions when compared against the Building Regulations benchmark."
- Nico Saieh (25 July 2010). "Strata SE1 / BFLS". ArchDaily.com. ArchDaily. Retrieved 9 August 2010. "Various low energy features incorporated into the Strata SE1 include bespoke high performing facade with an air permeability leakage rate that is 50% better than current building regulations..."
- ""Innovative" Strata sweeps the board at the 2010 Concrete Awards". BFLS-London.com. BFLS. 12 November 2010. Retrieved 15 November 2010.
- "Strata SE1 shortlisted for ICE London Civil Engineering Awards 2011". WSP UK. 27 January 2011. Retrieved 20 May 2011.
- "Property Management Awards". Retrieved 6 December 2011.
- Ellis Woodman (12 August 2010). "Strata tower wins 2010 Carbuncle Cup". BDonline. United Business Media. Retrieved 12 August 2010.
- Robert Booth (12 August 2010). "London's Strata tower wins Carbuncle Cup as Britain's ugliest new building". TheGuardian.com. The Guardian. Retrieved 10 November 2010.
- "Are these the ugliest buildings in the world?". Retrieved 3 April 2012.
- Brookfield's Elephant & Castle tower takes shape, Building.co.uk, 8 March 2010.
- The Strata 'Razor' tower: the cutting-edge of eco-construction, The Guardian, 15 March 2010 (10 pictures).
- In Pictures: Strata Tower, Residential Skyscraper At Elephant And Castle, Londonist, 18 March 2010.
- Strata tower: Southwark’s sore thumb, Building.co.uk, 9 April 2010.
- Don’t Look Down When Strata Tower Opens With Best London Views, Business Week, 13 April 2010.
- Nestled among ghost homes, Business Day[disambiguation needed], 16 April 2010.
- The high life in Elephant & Castle, The Times, 19 May 2010.
- Tower to the people in Elephant and Castle, Evening Standard Homes&Property, 26 May 2010.
- Wind-powered high-rise living?, Sydney Morning Herald, 30 June 2010.
- Strata SE1, London – propelling sustainable regeneration, Daniel Cowan, Proceedings of the ICE - Civil Engineering, Volume 163, Issue 6, 1 November 2010 , pages 056 –063 , ISSN: 0965-089X, E-ISSN: 1751-7672
|Wikimedia Commons has media related to: Strata (building)|
- Strata London official website
- @StrataSE1 — official Twitter stream (unused)
- BFLS London — BFLS website
- Strata SE1 — official Flickr photostream
- Main plans of planning application — 27 June 2005
- Approval of planning application for cycle storage — 17 September 2007
- Strata building @ Skyscraper News.com