Castellum
Ascot, Berkshire
Assistant Site Manager / Site Administrator Permanent Role Luxury Residential Projects Flagship Build in Sunningdale & Surrounding Prestige Areas (Berkshire, Surrey) At Castellum , we are award-winning luxury construction specialists delivering exceptional, high-end residential projects across prime locations in London, Surrey, Berkshire, and the Cotswolds. With over two decades of expertise in new builds, sensitive refurbishments, extensions, listed buildings, and sustainable retrofits, we partner closely with discerning clients, architects, and designers to create homes of lasting distinction many under strict confidentiality. We are now seeking a proactive, highly capable Assistant Site Manager to join our experienced team on a flagship luxury residential project in the exclusive Sunningdale area. This permanent position offers genuine long-term career progression, with a strong pipeline of prestigious schemes and the opportunity to work on some of the most desirable properties in the South East. Key Responsibilities Provide comprehensive daily support to the Site Manager, overseeing all site operations including coordination of skilled labour, specialist subcontractors, plant, and premium materials to ensure flawless programme delivery Lead, inspire, and mentor multi-trade teams to consistently achieve the exceptional standards of craftsmanship and finish that define Castellum projects Champion best-in-class health, safety, and environmental performance delivering toolbox talks, dynamic risk assessments, and full compliance with CDM 2015 regulations Proactively monitor progress against programme, identify potential risks or delays early, and collaborate effectively to deliver robust solutions Build and maintain strong, professional relationships with subcontractors, suppliers, architects, and clients to secure timely, high-quality contributions Maintain meticulous site records, including daily logs, progress photography, quality checklists, and comprehensive handover documentation Enforce rigorous quality assurance protocols to deliver exquisite, high-specification finishes that surpass the exacting expectations of our clients and design teams Essential Requirements Demonstrable site supervisory experience in UK construction (Assistant Site Manager, Site Supervisor, Foreman, or strong progression from Trainee/Graduate level) Valid CSCS card Current SMSTS certificate Strong understanding of residential construction techniques, CDM 2015, and contemporary site management best practices Outstanding leadership, communication, and problem-solving abilities comfortable managing diverse teams in fast-paced, high-expectation environments Full UK driving licence and own transport (essential, given the semi-rural and prestige nature of our sites) Highly Desirable Previous experience on high-end, luxury, or bespoke residential projects (new build, refurbishment, or listed buildings) Additional certifications (SSSTS, First Aid at Work, or similar) Exposure to premium finishes, client-facing environments, and working with high-profile stakeholders What Castellum Offers Highly competitive permanent salary, commensurate with experience Long-term job security with a robust pipeline of exclusive luxury residential projects A supportive, professional culture with director-level involvement, ongoing training, mentorship, and clear pathways to Site Manager and beyond The privilege of contributing to landmark homes in the UK's most sought-after locations The satisfaction of delivering work that consistently earns industry recognition and client pride If you are safety-first, quality-obsessed, and ready to build a rewarding career within a respected, award-winning team specialising in prime residential construction, we would be delighted to hear from you. Please submit your CV along with a brief covering note highlighting your most relevant experience (particularly any luxury or high-end residential projects) and your current notice period/availability.
Assistant Site Manager / Site Administrator Permanent Role Luxury Residential Projects Flagship Build in Sunningdale & Surrounding Prestige Areas (Berkshire, Surrey) At Castellum , we are award-winning luxury construction specialists delivering exceptional, high-end residential projects across prime locations in London, Surrey, Berkshire, and the Cotswolds. With over two decades of expertise in new builds, sensitive refurbishments, extensions, listed buildings, and sustainable retrofits, we partner closely with discerning clients, architects, and designers to create homes of lasting distinction many under strict confidentiality. We are now seeking a proactive, highly capable Assistant Site Manager to join our experienced team on a flagship luxury residential project in the exclusive Sunningdale area. This permanent position offers genuine long-term career progression, with a strong pipeline of prestigious schemes and the opportunity to work on some of the most desirable properties in the South East. Key Responsibilities Provide comprehensive daily support to the Site Manager, overseeing all site operations including coordination of skilled labour, specialist subcontractors, plant, and premium materials to ensure flawless programme delivery Lead, inspire, and mentor multi-trade teams to consistently achieve the exceptional standards of craftsmanship and finish that define Castellum projects Champion best-in-class health, safety, and environmental performance delivering toolbox talks, dynamic risk assessments, and full compliance with CDM 2015 regulations Proactively monitor progress against programme, identify potential risks or delays early, and collaborate effectively to deliver robust solutions Build and maintain strong, professional relationships with subcontractors, suppliers, architects, and clients to secure timely, high-quality contributions Maintain meticulous site records, including daily logs, progress photography, quality checklists, and comprehensive handover documentation Enforce rigorous quality assurance protocols to deliver exquisite, high-specification finishes that surpass the exacting expectations of our clients and design teams Essential Requirements Demonstrable site supervisory experience in UK construction (Assistant Site Manager, Site Supervisor, Foreman, or strong progression from Trainee/Graduate level) Valid CSCS card Current SMSTS certificate Strong understanding of residential construction techniques, CDM 2015, and contemporary site management best practices Outstanding leadership, communication, and problem-solving abilities comfortable managing diverse teams in fast-paced, high-expectation environments Full UK driving licence and own transport (essential, given the semi-rural and prestige nature of our sites) Highly Desirable Previous experience on high-end, luxury, or bespoke residential projects (new build, refurbishment, or listed buildings) Additional certifications (SSSTS, First Aid at Work, or similar) Exposure to premium finishes, client-facing environments, and working with high-profile stakeholders What Castellum Offers Highly competitive permanent salary, commensurate with experience Long-term job security with a robust pipeline of exclusive luxury residential projects A supportive, professional culture with director-level involvement, ongoing training, mentorship, and clear pathways to Site Manager and beyond The privilege of contributing to landmark homes in the UK's most sought-after locations The satisfaction of delivering work that consistently earns industry recognition and client pride If you are safety-first, quality-obsessed, and ready to build a rewarding career within a respected, award-winning team specialising in prime residential construction, we would be delighted to hear from you. Please submit your CV along with a brief covering note highlighting your most relevant experience (particularly any luxury or high-end residential projects) and your current notice period/availability.
Castellum
City Of Westminster, London
Construction Project Manager Super-Prime Residential London Division Castellum Luxury Construction Specialists Castellum is an award-winning leader in super-prime residential construction, specialising in high-end residential new builds, refurbishments, Design & Build, and Main Contracting projects across prime London postcodes. Since 2003, we have delivered exceptional luxury residential homes with uncompromising craftsmanship, meticulous attention to detail, and a commitment to sustainability and absolute discretion. Our London Division focuses on prestigious, technically complex residential construction projects in exclusive areas such as Mayfair, Kensington, Belgravia, Knightsbridge, Chelsea, and Holland Park including landmark new-build townhouses and apartments, major basement extensions, lateral conversions, heritage-listed refurbishments, full-gut renovations of period properties, and multi-level structural transformations. The Role We are seeking an experienced Construction Project Manager to lead super-prime residential projects in our London Division. As Project Manager, you will take full ownership of high-value luxury residential construction commissions, ensuring flawless delivery on time, within budget, and to the highest quality standards expected by ultra-high-net-worth clients, leading architects, and specialist consultants. You will manage the full project lifecycle from pre-construction planning and stakeholder coordination through to on-site execution, risk management, and successful handover, while prioritising health and safety, sustainability, and client satisfaction. Key Responsibilities Lead super-prime residential construction projects, including new builds, basement extensions, lateral conversions, heritage refurbishments, and complete structural transformations in central London. Manage stakeholder relationships with ultra-high-net-worth clients, architects, interior designers, structural engineers, and subcontractors to deliver visionary high-end residential designs. Develop and manage detailed project programmes, budgets, procurement, and resource plans using tools such as MS Project or equivalent, ensuring adherence to timelines and commercial targets. Oversee health and safety compliance, sustainability standards and heritage requirements. Provide strong site leadership, supervising teams, managing subcontractors, and resolving complex technical, logistical, or neighbour issues to maintain project schedule and quality. Deliver clear, discreet progress reporting and updates to clients and senior management (Quantity Surveyor / Project Director etc). Integrate sustainable practices, including energy-efficient systems, low-carbon materials, and smart-home technologies. About You Proven experience as a Construction Project Manager or Project Manager delivering super-prime / high-end residential / luxury residential projects in London (typically £multi-million value), with a strong portfolio in new builds, basement extensions, lateral conversions, or listed building refurbishments. In-depth knowledge of luxury construction techniques, premium materials, bespoke finishes, and London-specific challenges (e.g., party wall matters, restricted access, heritage sensitivities, basement waterproofing). Strong project management skills, including budget management, cost control, scheduling, risk management, change control, and resource allocation in complex urban environments. Relevant qualifications (e.g., degree in Construction Management, Civil Engineering, or equivalent chartered/professional experience; desirable: PMP, CIOB, or similar). Exceptional stakeholder management, communication, and leadership skills to build trust with elite clients and teams. Proactive, detail-oriented, with a passion for delivering timeless luxury residential properties. Why Castellum? Lead landmark super-prime residential projects in London s most exclusive postcodes. Join an excellence-driven team renowned for craftsmanship, sustainability, and discretion. Enjoy a competitive salary, comprehensive benefits, and strong career progression opportunities. How to Apply If you are an experienced Construction Project Manager ready to excel working on the very best super-prime residential construction projects in London, please submit your application.
Construction Project Manager Super-Prime Residential London Division Castellum Luxury Construction Specialists Castellum is an award-winning leader in super-prime residential construction, specialising in high-end residential new builds, refurbishments, Design & Build, and Main Contracting projects across prime London postcodes. Since 2003, we have delivered exceptional luxury residential homes with uncompromising craftsmanship, meticulous attention to detail, and a commitment to sustainability and absolute discretion. Our London Division focuses on prestigious, technically complex residential construction projects in exclusive areas such as Mayfair, Kensington, Belgravia, Knightsbridge, Chelsea, and Holland Park including landmark new-build townhouses and apartments, major basement extensions, lateral conversions, heritage-listed refurbishments, full-gut renovations of period properties, and multi-level structural transformations. The Role We are seeking an experienced Construction Project Manager to lead super-prime residential projects in our London Division. As Project Manager, you will take full ownership of high-value luxury residential construction commissions, ensuring flawless delivery on time, within budget, and to the highest quality standards expected by ultra-high-net-worth clients, leading architects, and specialist consultants. You will manage the full project lifecycle from pre-construction planning and stakeholder coordination through to on-site execution, risk management, and successful handover, while prioritising health and safety, sustainability, and client satisfaction. Key Responsibilities Lead super-prime residential construction projects, including new builds, basement extensions, lateral conversions, heritage refurbishments, and complete structural transformations in central London. Manage stakeholder relationships with ultra-high-net-worth clients, architects, interior designers, structural engineers, and subcontractors to deliver visionary high-end residential designs. Develop and manage detailed project programmes, budgets, procurement, and resource plans using tools such as MS Project or equivalent, ensuring adherence to timelines and commercial targets. Oversee health and safety compliance, sustainability standards and heritage requirements. Provide strong site leadership, supervising teams, managing subcontractors, and resolving complex technical, logistical, or neighbour issues to maintain project schedule and quality. Deliver clear, discreet progress reporting and updates to clients and senior management (Quantity Surveyor / Project Director etc). Integrate sustainable practices, including energy-efficient systems, low-carbon materials, and smart-home technologies. About You Proven experience as a Construction Project Manager or Project Manager delivering super-prime / high-end residential / luxury residential projects in London (typically £multi-million value), with a strong portfolio in new builds, basement extensions, lateral conversions, or listed building refurbishments. In-depth knowledge of luxury construction techniques, premium materials, bespoke finishes, and London-specific challenges (e.g., party wall matters, restricted access, heritage sensitivities, basement waterproofing). Strong project management skills, including budget management, cost control, scheduling, risk management, change control, and resource allocation in complex urban environments. Relevant qualifications (e.g., degree in Construction Management, Civil Engineering, or equivalent chartered/professional experience; desirable: PMP, CIOB, or similar). Exceptional stakeholder management, communication, and leadership skills to build trust with elite clients and teams. Proactive, detail-oriented, with a passion for delivering timeless luxury residential properties. Why Castellum? Lead landmark super-prime residential projects in London s most exclusive postcodes. Join an excellence-driven team renowned for craftsmanship, sustainability, and discretion. Enjoy a competitive salary, comprehensive benefits, and strong career progression opportunities. How to Apply If you are an experienced Construction Project Manager ready to excel working on the very best super-prime residential construction projects in London, please submit your application.
