Many developers, contractors, and commercial teams assume the biggest risk to a major development is securing planning permission.

Sometimes it is.  

However, some of the most expensive delays happen long after planning permission has already been granted.  

They rarely make headlines and rarely become the subject of legal commentary. Yet behind the scenes, these hidden delays extend programmes, increase finance costs, disrupt procurement strategies, and erode already tight margins.

For projects valued at £1 million or more, planning approval must be the beginning of delivery, not the start of another period of uncertainty.

Planning Permission Is Not the Finish Line

Securing planning permission is a major milestone, but it is only one part of the development journey.  

Before physical work can begin on site, projects must navigate a range of legal, technical, and commercial requirements.  

If these requirements are not identified and programmed early, they create significant bottlenecks long after the formal decision notice has been issued.  

A project can be fully approved and still remain months away from breaking ground. That gap between approval and delivery is where many of the most significant legal and commercial risks emerge.

Six Hidden Delays That Stall Development

1. Discharging Planning Conditions

Many permissions include pre-commencement conditions that must be formally discharged before relevant works begin. These often require specialist surveys, engineering details, or technical reports. The common mistake is treating pre-commencement conditions as administrative tasks rather than critical programme activities. A delay here can prevent key works from starting and disrupt the wider construction programme.

2. Utility Agreements and Lead Times

Electricity, water, drainage, gas, and telecommunications connections frequently become unexpected blockers. Statutory undertakers operate on their own timescales, which rarely align with construction delivery schedules. Initiating these conversations late creates severe downstream disruption. 

3. Highways and Infrastructure Approvals

Planning approval does not automatically resolve highway requirements. Access arrangements, Section 278/38 agreements, traffic management plans, and technical approvals demand rigorous coordination. Without early engagement, infrastructure sign-offs stall progress. 

4. Outstanding Legal and Title Matters

Planning permission does not remove the need to resolve underlying land and title legalities. Section 106 obligations, easements, restrictive covenants, rights of light, and land agreements all require careful management. A development can appear ready on paper while remaining legally blocked from site execution. 

5. Procurement Misalignment

Treating planning and procurement as separate processes is a critical error. If contractors price works without a full understanding of planning obligations, conditions, and site constraints, commercial risk increases. That uncertainty leads to inflated pricing, risk allowances, and future variations. 

6. Unrealistic Mobilisation Expectations

Even with approvals in place, site activity cannot commence overnight. Materials procurement, subcontractor coordination, logistics, and site setup demand structured preparation. Assuming immediate transition from permission to construction creates unachievable programmes and commercial friction. 

The Commercial Reality of Delay

Every additional month that elapses between planning approval and breaking ground carries a tangible financial cost. 

Finance charges continue to accumulate, contractor pricing expires, material costs fluctuate, sales windows are missed, and investor confidence begins to weaken.  

None of these issues arise because planning permission was refused. 

They arise because the transition from approval to delivery was not managed strategically.

Delivery Demands Early Alignment

Successful developments are not defined solely by securing permission. 

They are defined by how effectively legal, commercial, and operational risks are managed afterwards.  

Projects that move from approval to construction without disruption are usually the result of early coordination, not luck.

Planning permission is vital, but it is not the finish line. It is where delivery begins.  

Looking Ahead:

I will be exploring these post-planning legal and commercial risks in greater detail during my upcoming webinar, focusing on practical steps to secure project certainty.  

If you are currently navigating pre-commencement conditions or structuring a major development, feel free to get in touch. I would be happy to discuss how to protect your project programme and commercial position.

→ Reserve your place for the webinar here: 

​​https://www.linkedin.com/events/7477731354986680321/