Construction Contract Addendum Template for England and Wales

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Key Requirements PROMPT example:

Construction Contract Addendum Template

I need a Construction Contract Addendum Template to modify our existing agreement with ABC Contractors Ltd, extending the completion date to March 2025 and increasing the contract sum by £500,000 due to additional foundation works.

Document background
The Construction Contract Addendum Template is designed for use when parties need to formally modify an existing construction contract in England and Wales. It provides a structured framework for documenting changes while ensuring compliance with relevant construction legislation. This template is particularly useful when parties need to adjust project scope, revise completion dates, modify payment terms, or make other material changes to the original agreement. The document maintains the integrity of the original contract while clearly delineating the agreed modifications.
Suggested Sections

1. Parties: Identification of the parties to the original contract and addendum

2. Background: Reference to original contract and reason for addendum

3. Definitions: Key terms used in the addendum

4. Amendment Details: Specific changes being made to the original contract

5. Effect on Original Agreement: Statement of which original terms remain in force

6. Execution: Signature blocks and execution provisions

Optional Sections

1. Revised Payment Terms: Used when modifying payment provisions in accordance with the Housing Grants, Construction and Regeneration Act 1996

2. Programme Amendments: Changes to project timeline and completion dates, including extension of time provisions

3. Scope Changes: Modifications to work scope, including any variations to the original specifications

4. Price Adjustments: Changes to contract sum, including any variations and additional costs

5. Health and Safety Provisions: Additional health and safety requirements under CDM Regulations 2015

Suggested Schedules

1. Schedule of Amendments: Detailed list of specific changes to original contract clauses

2. Revised Programme: Updated project timeline showing new completion dates and milestones

3. Revised Price Schedule: Modified pricing details including rates and quantities

4. Drawing Register: Updated list of applicable drawings and specifications

5. Schedule of Variations: Detailed list of all variations to the original scope of works

Authors

Alex Denne

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

Industries

Housing Grants, Construction and Regeneration Act 1996: Primary legislation governing construction contracts in England and Wales, including payment provisions and right to adjudication

Construction Act 2009: Key amendments to the 1996 Act, updating payment provisions and adjudication procedures

Contracts (Rights of Third Parties) Act 1999: Legislation governing how third parties may enforce terms of a contract

Late Payment of Commercial Debts (Interest) Act 1998: Legislation concerning interest on late payments in commercial transactions

Supply of Goods and Services Act 1982: Legislation governing the quality and fitness for purpose of goods and services provided

Building Act 1984: Framework legislation for building regulations and control of building work

Building Regulations 2010: Detailed requirements for building work, including technical standards and compliance

Construction (Design and Management) Regulations 2015: Health and safety regulations specific to construction projects, defining duties of all parties

Environmental Protection Act 1990: Legislation concerning environmental protection and waste management during construction

Environment Act 2021: Updated environmental legislation including new requirements for construction projects

Health and Safety at Work etc. Act 1974: Primary legislation governing workplace health and safety obligations

Working Time Regulations 1998: Regulations governing working hours and rest periods for construction workers

Common Law Principles: Established case law principles affecting construction contracts including formation, interpretation, and remedies

The Scheme for Construction Contracts: Statutory fallback provisions for construction contracts that fail to include required terms

Building Safety Act 2022: Recent legislation implementing new building safety requirements and establishing Building Safety Regulator

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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