Single-storey rear extension and garden works on Porchester Road
A residential extension project involving single-storey rear extension works, Thames Water sewer coordination, drainage works, foundations, roofing, kitchen installation, patio works, garden turfing, fencing and concrete base preparation.
Location: Porchester Road, Kingston upon Thames
Sector: Residential Construction
Scope: Rear extension, drainage coordination and external works

Residential extension delivery with drainage and external works coordination
UKPC delivered a residential rear extension package in Kingston upon Thames, coordinating structural design, construction delivery, Building Control requirements, Thames Water sewer matters and external garden improvements.
Porchester Road, Kingston upon Thames
SECTOR
Residential Construction
PROJECT TYPE
Single-storey rear extension and garden works
UKPC ROLE
Principal Contractor and structural design coordination
KEY WORKS
Rear extension, structural coordination, drainage works, kitchen installation and patio works
COMPLIANCE & UTILITIES
Building Control coordination, Thames Water sewer matters and drainage support
SCOPE OF WORKS
A rear extension package with structural, drainage and external works coordination
The project required coordinated delivery across structural design, Building Control, drainage, extension construction, kitchen installation and external garden works.
Design and Building Control coordination
Structural design coordination, Building Control liaison and Principal Contractor responsibility formed part of the delivery framework.
Single-storey rear extension
Rear extension works including demolition, excavation, foundations, walls, roofing and associated internal and external making good.
Thames Water sewer coordination
Drainage works and Thames Water sewer matters were coordinated as part of the project requirements.
Kitchen, patio and garden works
Kitchen installation, patio works, garden turfing, fencing and concrete base preparation were completed as part of the wider package.
Coordinating design, utilities and construction delivery
The Porchester Road project required more than a standard rear extension. UKPC coordinated structural design input, Building Control requirements, Thames Water sewer matters, drainage works and multi-trade site delivery as one controlled package.
Structural design coordination
Structural requirements were coordinated before and during the works to support safe extension delivery and Building Control compliance.
Building Control liaison
Regulatory requirements were managed as part of the construction process, helping the works progress with clear compliance oversight.
Drainage and sewer matters
Thames Water sewer coordination and drainage works were incorporated into the project sequencing rather than treated separately.
External completion
Patio works, garden turfing, fencing and concrete base preparation were coordinated with the extension and internal works.
Selected images from the Porchester Road extension works
A concise visual record of the rear extension, drainage coordination, internal works and external garden improvements completed in Kingston upon Thames.






What this project demonstrates
The Porchester Road project demonstrates UKPC’s ability to manage residential extension works where structural coordination, Building Control, drainage requirements and external completion all need to be controlled together.
Design-led construction control
Structural design coordination and Building Control requirements were integrated into the delivery process.
Drainage and sewer awareness
Thames Water sewer matters and drainage works were coordinated alongside the extension construction.
Extension and internal works
The rear extension, kitchen installation and internal works were managed as part of one coordinated construction package.
Garden and patio completion
Patio works, garden turfing, fencing and concrete base preparation completed the external environment.
Planning a similar project?
Speak with UKPC about your rear extension, structural requirements, drainage coordination or residential improvement works.
