Sidd

Hi Community. I am planning to obtain a planning permission to build a rear extension in my detached home. The complication is that the boundary of the extension will be within 'zone of influence' of a water retaining body i,e a swimming pool. The max depth of the pool is 1.5metres and the extension will be around 2.5metres from the boundary of the extension. I have had builders mention that the works could be complicated on account of 1. deeper foundation required 2. access issues. I also forsee building regulation requirements to be tough. I have attached a (blurry) top view showing the property and have tried to indicate where the extension would be build. What are my options to reduce the complexity of the extension (and as result reduce build cost) ? Is access going to be big issue ? What are the best options to cover the pool to stop debris from coming in ?