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Completion Certificate For Extension Template for England and Wales

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Key Requirements PROMPT example:

Completion Certificate For Extension

"I need a Completion Certificate For Extension for a two-storey residential extension in Manchester that was completed in March 2025, including specific references to energy efficiency compliance and new electrical installations."

What is a Completion Certificate For Extension?

The Completion Certificate For Extension is a vital document in the English and Welsh construction sector, required when any significant extension work has been completed on a property. It provides formal verification that the works have been carried out in accordance with current building regulations, planning permissions, and approved designs. The certificate is typically issued following final inspection by building control authorities and includes crucial details such as property information, work specifications, compliance statements, and relevant approval references. This document is essential for maintaining property records, ensuring legal compliance, and may be required during future property sales or refinancing.

What sections should be included in a Completion Certificate For Extension?

1. Property Details: Full address and description of the property where extension was built

2. Works Description: Detailed description of the extension works completed

3. Compliance Statement: Declaration that works comply with approved plans and building regulations

4. Completion Date: Date when works were substantially completed

5. Building Control Reference: Reference numbers for building control applications and approvals

What sections are optional to include in a Completion Certificate For Extension?

1. Planning Permission Details: Reference to planning permission when required for works requiring planning approval

2. Party Wall Agreement Reference: Details of party wall agreements when works affected shared walls or boundaries

3. Conservation Area Compliance: Confirmation of compliance with conservation area requirements for properties in conservation areas

What schedules should be included in a Completion Certificate For Extension?

1. Photographs: Photographic evidence of completed works

2. As-Built Drawings: Final drawings showing the completed extension as built

3. Building Control Certificates: Copies of building control certificates and approvals

4. Test Certificates: Relevant test certificates for electrical, gas, or other installations

Authors

Alex Denne

Head of Growth (Open Source Law) @ ¶¶ÒõÊÓÆµ | 3 x UCL-Certified in Contract Law & Drafting | 4+ Years Managing 1M+ Legal Documents | Serial Founder & Legal AI Author

Relevant legal definitions

























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Industries

Building Regulations 2010: Primary legislation ensuring the extension meets current building standards including structural safety, fire safety, ventilation, and energy efficiency requirements

Building Act 1984: Framework legislation that provides the basis for building regulations and defines requirements for building control approval

Party Wall Act 1996: Legislation governing works affecting shared walls or boundaries, particularly relevant for attached properties or work near property boundaries

Town and Country Planning Act 1990: Ensures compliance with planning permission requirements and confirms the extension meets approved plans

Construction (Design and Management) Regulations 2015: Regulations covering health and safety requirements during construction and defining responsibilities of different parties involved in the project

Building (Approved Inspectors etc.) Regulations 2010: Legislation relevant when private building control inspectors are used, defining requirements for inspection and certification

Local Authority Building Control Requirements: Specific requirements set by the local authority for building control and inspection in their jurisdiction

Planning Conditions: Property-specific conditions attached to planning permissions that must be satisfied

Conservation Area Restrictions: Additional requirements and restrictions that apply if the property is located within a conservation area

Listed Building Considerations: Special requirements and restrictions that apply if the property is a listed building or affects the setting of listed buildings

Teams

Employer, Employee, Start Date, Job Title, Department, Location, Probationary Period, Notice Period, Salary, Overtime, Vacation Pay, Statutory Holidays, Benefits, Bonus, Expenses, Working Hours, Rest Breaks,  Leaves of Absence, Confidentiality, Intellectual Property, Non-Solicitation, Non-Competition, Code of Conduct, Termination,  Severance Pay, Governing Law, Entire Agreemen

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