---
title: NEC4 PSC- Detailed review of NEC4 Professional Services contract changes compared to NEC3
date: 2017-08-30T06:52:21Z
modified: 2024-03-01T09:49:14Z
permalink: "https://gmhplanning.co.uk/nec-downloads/nec4-detailed-review-changes-within-psc/"
type: downloads
status: publish
excerpt: ""
wpid: 2111
nec_contract_type:
  - NEC4
nec_contract_version:
  - NEC Professional Services Contract (PSC)
download_category:
  - Compensation events
  - Contract data
  - Contract types & documentation
  - Early warnings
  - Overview and introduction
  - Payments
  - Primary & secondary options
  - Programme
  - Quality / defects
  - Responsibilities
  - Terms and communications
featured_image: "https://gmhplanning.co.uk/wp-content/uploads/2017/08/NEC-4-Professional-Services-Contract-PSC-e1641472690976.jpg"
featured_image_alt: NEC 4 Professional Services Contract PSC
author: Glenn Hide
timestamp: 2024-03-01T09:49:14Z
tags:
  - NEC4
  - NEC Professional Services Contract (PSC)
  - Compensation events
  - Contract data
  - Contract types & documentation
  - Early warnings
  - Overview and introduction
  - Payments
  - Primary & secondary options
  - Programme
  - Quality / defects
  - Responsibilities
  - Terms and communications
---

Here is the GMH Planning detailed guide as to the most important changes within the new NEC4 version of the Professional Services Contract. For those who are pretty familiar with the NEC3 version then you should find this document very useful to understand what the main changes are that have come about within NEC4.

Each of these guides have now all been colour coded so that for each change identified it is split into one of five categories for easy reference: 1) new NEC4 clause, 2) new point of clarity, 3)Change to previous wording, 4) Same clause re-numbered, 5) Deleted NEC3 clause

[NEC4 PSC Comparison Document](https://gmhplanning.co.uk/wp-content/uploads/2017/11/NEC4-PSC-Comparison-Document.pdf)[Download](https://gmhplanning.co.uk/wp-content/uploads/2017/11/NEC4-PSC-Comparison-Document.pdf)

## Topics

**NEC Contract Editions:** [NEC4](https://gmhplanning.co.uk/wp-content/uploads/wp-mfa-exports/taxonomy/nec_contract_type/nec4.md)

**NEC Contract Versions:** [NEC Professional Services Contract (PSC)](https://gmhplanning.co.uk/wp-content/uploads/wp-mfa-exports/taxonomy/nec_contract_version/nec-professional-services-contract-psc.md)

**Download Categories:** [Compensation events](https://gmhplanning.co.uk/wp-content/uploads/wp-mfa-exports/taxonomy/download_category/compensation-events.md), [Contract data](https://gmhplanning.co.uk/wp-content/uploads/wp-mfa-exports/taxonomy/download_category/contract-data.md), [Contract types & documentation](https://gmhplanning.co.uk/wp-content/uploads/wp-mfa-exports/taxonomy/download_category/contract-types-documentation.md), [Early warnings](https://gmhplanning.co.uk/wp-content/uploads/wp-mfa-exports/taxonomy/download_category/early-warnings.md), [Overview and introduction](https://gmhplanning.co.uk/wp-content/uploads/wp-mfa-exports/taxonomy/download_category/overview-and-introduction.md), [Payments](https://gmhplanning.co.uk/wp-content/uploads/wp-mfa-exports/taxonomy/download_category/payments.md), [Primary & secondary options](https://gmhplanning.co.uk/wp-content/uploads/wp-mfa-exports/taxonomy/download_category/primary-secondary-options.md), [Programme](https://gmhplanning.co.uk/wp-content/uploads/wp-mfa-exports/taxonomy/download_category/programme.md), [Quality / defects](https://gmhplanning.co.uk/wp-content/uploads/wp-mfa-exports/taxonomy/download_category/quality-defects.md), [Responsibilities](https://gmhplanning.co.uk/wp-content/uploads/wp-mfa-exports/taxonomy/download_category/responsibilities.md), [Terms and communications](https://gmhplanning.co.uk/wp-content/uploads/wp-mfa-exports/taxonomy/download_category/terms-and-communications.md)