Castlethorpe, Milton Keynes
housing partner
Working with Stonewater HG delivering 31 affordable homes incluidng social rent, affordable rent and shared ownership.
delivery
Completed on programme and on budget with phased handovers despite COVID-19 supply pressures, with no contract variations and homes meeting NHBC and accessible housing requirements.
Procurement Partnership
A two-stage JCT Design & Build contract enabled early contractor involvement, coordinated design development and clear cost planning. Close collaboration with Stonewater and its advisers supported an unchanged final contract sum.
Infrastructure & Technical Delivery
Snowdon coordinated complex infrastructure, including Section 38, 104, and an adoptable Anglian Water pumping station, alongside approvals and safe working arrangements adjacent to Network Rail.
This scheme comprised:
Social Rent, Affordable Rent & Shared Ownership
The development was delivered under a JCT Design & Build 2016 contract and completed within the agreed 64-week programme.
Full infrastructure, drainage and estate roads
The approved layout (Proposed Site Plan Rev K) demonstrates:
• Logical and permeable road hierarchy
• Integrated attenuation pond and public open space
• Clear separation distances
• Retention of key landscape features
• Integrated pumping station design
• Level access routes across primary pedestrian circulation areas
A detailed demolition methodology was implemented, including phased demolition, protection of adjoining structures and controlled material removal, ensuring safety and regulatory compliance throughout.
Adoption & Statutory Agreements
The scheme successfully delivered:
• Section 38 highway adoption
• Section 104 sewer adoption
• Adoptable pump station
• Approved drainage management strategy
• Network Rail interface coordination
Adoption compliance is a critical delivery risk area — this project evidences full technical management capability.
Specification & RP Compliance
Delivered in accordance with Stonewater’s Employer’s Requirements and Design Brief, including:
• NHBC standards compliance
• Fire strategy integration
• Secured by Design principles
• Part M accessibility standards
• Adoption agreements
• Structured handover documentation
• Formal rectification period management
Air Source Heat Pump heating (EPC B)
Each plot is equipped with an energy-efficient air source heat pump, using heat from the outside air to warm the home and provide hot water while helping achieve a high EPC B energy performance rating.
Level access dwellings and enhanced accessibility compliance
The site layout incorporates finished floor levels carefully coordinated to maintain accessible approaches across the development.
The scheme incorporates enhanced accessibility standards in accordance with Building Regulations Part M.
The approved Part M Category plan identifies dwellings designed to comply with:
• M4(2) – Accessible and Adaptable Dwellings
• M4(3) – Wheelchair User Dwellings (where applicable)
Key accessibility features include:
• Level threshold access to identified plots
• Accessible parking provision adjacent to M4 dwellings
• Compliant internal circulation widths
• Future adaptability provisions
• Ground floor WC facilities designed for wheelchair transfer
• Step-free access routes from parking to entrance
The site design integrates level changes strategically to ensure compliant gradients and inclusive access throughout the development.
This demonstrates early-stage integration of inclusive design into the planning and construction process rather than post-design adaptation.
Quality & Compliance
100% Independent Health & Safety Audit
• Score: 50 / 50
• 100% rating
• “Best Practice Site” classification
Key findings included:
• No issues of concern
• Strong plant & pedestrian segregation
• Full PPE compliance
• Complete documentation
Building Control & Warranty
• NHBC Approved Inspector oversight
• Initial Notice submitted and accepted
• Buildmark warranty compliance
• Full regulatory compliance
Testimonial
