Extensions
90 sources in the library on extensions. Each one says what the document covers and what it is good for. Name a source to see which document it is and where to read it. One at a time. Page 3 of 3.
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United Utilities
A sewerage undertaker setting out its own build-over process, which is the practical authority for the consent a homeowner actually needs (the Water UK Sewerage Sector Guidance covers adoption, not build-over). The page states that United Utilities approval is required for building works within 3 metres of a public sewer or lateral drain. On access, it requires sufficient access points to the affected sewer, meaning manholes and rodding points; states that ideally buildings and extensions should not be sited where they would remove an existing point of access; and requires access points to be easily accessible and visible for use in an emergency. Where ground conditions are poor, the developer must arrange special design and construction plans so the pipe is protected from any risk of damage. On the route through building control, it explains that building control inspectors operating under the United Utilities Protocol agreement can approve build-overs that meet set criteria, and that where a proposal does not fit those criteria the inspector escalates it so United Utilities can deal with the developer directly, which is why a homeowner may find the sewer question handled inside their Building Regulations application rather than as a separate approach to the water company.
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Water UK
The Water UK page indexing the Sewerage Sector Guidance, captured on the Wayback Machine because water.org.uk returns 403 to scripted fetches. Page date published 21 April 2023. The document set comprises the main SSG (approved version 2.2, 29 June 2022, later v2b) plus Appendix B Procedures, Appendix C Design and Construction Guidance, Appendix D Minimum Information, Appendix E Model Sewer Adoption Agreement, Appendix F Levels of Service and Reporting, Appendix G Terms of Reference approved by Ofwat, and a transitional principles document, along with published local practice notes from Anglian Water, Southern Water, Thames Water and Wessex Water on sewage pumping stations and, for Thames Water, on easements. Section 1.1 of the SSG states that it is the guidance which companies holding an instrument of appointment as sewerage undertakers under sections 6 or 7 of the Water Industry Act 1991 recommend Ofwat enables under its Code for Adoption, which came into effect on 13 November 2017, and that it contains a draft Model Sewerage Adoption Agreement. Sections 1.2.1 to 1.2.3 confirm sewerage companies are obliged by the Code to comply once Ofwat approves it, that failure may result in investigation and sanction by Ofwat, that it applies to infrastructure covered by a section 104 Water Industry Act agreement, and that it applies to companies operating wholly or mainly in England. IMPORTANT SCOPE POINT: the SSG governs the ADOPTION of new sewerage assets, not the separate build-over-a-sewer consent a homeowner needs, so do not cite it as the authority for a build over agreement.
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Considerate Constructors Scheme
A route most UK renovation articles never mention: what a neighbour affected by building work can actually do. The Scheme records all concerns, comments, compliments or complaints about a registered activity regardless of source. Once a concern is reviewed and found to relate to the Code of Considerate Practice, the Scheme informs the activity designated contact, usually the site manager or company contact, and may highlight the relevant parts of the Code. If the person raising it gives permission, their name and contact details are shared so the contact can work with them directly, particularly where compensation may be involved or where they have already been in contact with the site; if permission is not given, the Public Support team liaises on their behalf and the matter is handled confidentially. Crucially, if the construction activity is NOT registered with the Scheme, the Scheme will still contact the relevant organisation and attempt to mediate between the parties, but cannot progress the concern if that organisation does not respond. Contact is by freephone 0333 049 4600 in the UK, 1800 939 109 in the Republic of Ireland, or publicsupport@considerateconstructors.com.
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Considerate Constructors Scheme
The code a registered contractor commits to, and the standard a homeowner or neighbour can measure a builder against. Registering an organisation, contractor or supplier with the Scheme is a commitment to observe and implement the Code, and the Code applies equally to all registered activities regardless of size, type or location. It has three sections. Respect the community: courteous and respectful language and appropriate behaviour in and around the activity; providing a safer environment, preventing unnecessary disturbance and reducing nuisance for the community; and proactively maintaining effective community engagement. Care for the environment: prioritising environmental issues to protect the natural environment and minimise negative impacts; optimising the use of resources including minimising carbon throughout the value chain; and engaging with the community to improve the local environment. Value the workforce: creating a supportive, inclusive and healthy workplace. Registration also means agreeing to be visited and scored by a Scheme Monitor, with conformance recognised through Certificates of Performance, Records of Performance and the Leading Lights Awards, and optional paid advisory visits available.
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Glass and Glazing Federation
The GGF is the UK industry body for glass and glazing, representing companies across glazing, fenestration and related trades. It runs a Technical Library and Technical Hub with guidance on windows, doors, conservatories and specialist glazing, a searchable directory of member companies, and a Member Complaint Service for disputes with a member firm. It sits alongside and links to FENSA for windows and doors Building Regulations compliance, BFRC for window energy ratings, and RISA certification. Approved Document L names the GGF as the source of the methods for calculating Window Energy Rating and Doorset Energy Rating, which is why this body matters for a note quoting WER bands.
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SCI and BCSA (steelconstruction.info)
Describes the hot rolled open sections used in UK construction: universal beams (UB), universal columns (UC), parallel flange channels (PFC), equal and unequal angles, and circular, square and rectangular structural hollow sections. Sections are designated by a serial size (nominal section depth and flange width) plus a weight per metre, which is why a beam is quoted as, for example, 203 x 133 x 25 UB. Dimensions for UB, UC and PFC are given in BS EN 10365, angles in BS EN 10056, and design and detailing dimensions in SCI publication P363 (the Blue Book). Hot rolled open sections are produced in lengths up to about 25 m, and S355 is the grade most commonly used in construction.
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Structural Timber Association
The STA is the trade body representing structural timber manufacturers and specifiers, working to increase structural timber specification and to influence legislation and regulation in the sector. Its flagship technical document is the Volume 1 Pattern Book, covering the fire resistance performance of a range of commonly used structural timber walls and floors and explaining component build-ups and the modifications that are permitted. The Pattern Book is freely available to designers and specifiers but may only be used on projects where the timber frame, SIPs or mass timber elements are supplied by an STA member manufacturer, a limitation worth stating if a note points a reader to it. The STA also runs the STA Assure Quality Assurance Scheme for member competency and publishes fire research on timber frame and mass timber systems.
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Northern Ireland Water
NORTHERN IRELAND. NI Water requires a Building Over or Near a Public Sewer Agreement, and its conditions go beyond the England build-over agreement. Drawings must be at a scale of 1:100 or greater and colour code existing public sewers, foul in red, storm in green and combined in magenta, with private drainage in black, plus longitudinal sections showing pipe size, gradient, material, manholes and invert and cover levels to Ordnance Datum Belfast. Where building over the sewer, ONLY SUSPENDED CONCRETE FLOORS are permissible if a concrete floor is proposed. A method statement is required whether or not the pipe is being replaced, and NI Water may require a Structural Engineer's Report at the developer's expense. Critically, where there is any loan or mortgage on the property the LENDER MUST SIGN the agreement before it is returned, and the applicant must hold and provide current home insurance including buildings cover. No work may start until the agreement is authorised and returned. Applications are triaged before payment is requested, and third and subsequent applications on the same sewer leg attract a discount under the Scheme of Charges.
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Scottish Water
SCOTLAND. Scottish Water is a single public corporation covering all of Scotland, so there is no regional water and sewerage company to approach as in England, and no Thames Water or Severn Trent style build-over agreement process. The page sets out the Single House Connections route for anyone constructing a new domestic property, renovating an existing property, needing a temporary connection or a building water supply, or converting from a private water supply to the public water or sewer network, and stresses planning utility connections at the earliest stage. The process runs in four published stages, Preparing, Applying, Constructing and Completing, supported by a downloadable Single House Connections Guidance document that also covers converting from a private to a public water supply. Contact is 0800 0778 778, 24 hours a day.
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Prince Surveyors
an RICS, CIOB and RPSA accredited surveying practice on what party wall work costs in London and the home counties: £90 to £250 an hour, with a straightforward single-notice matter often settling between £700 and £1,500 in total, and the final figure turning on how many adjoining owners are involved. It is the second of the two practices the cost book's party wall fee is built from, and the wider of the two ranges