New Build Construction

Q: Do you act as the Principal Contractor under CDM 2015 regulations?

Yes. Tarj Construction acts as the statutory Principal Contractor for new build developments across London and Essex. We take full responsibility for site liability, health and safety management, trade coordination, and secure site setup from the first day of groundworks through to Practical Completion (PC).

Q: What types of construction contracts do you typically operate under?

We predominantly operate under JCT (Joint Contracts Tribunal) frameworks, including JCT Design and Build (D&B) and Standard Building Contracts. We ensure transparent contract administration, clear milestone reporting, and strict variation control to protect your commercial viability.

Q: Do you coordinate structural warranties and Building Control sign-offs?

Absolutely. We work proactively with Local Authority Building Control (LABC), Approved Inspectors, and major structural warranty providers such as NHBC, Premier Guarantee, and LABC Warranty. We manage all mandatory stage inspections and certifications to ensure there are no delays in securing your final Completion Certificates.

Q: How do you handle the Future Homes Standard and modern energy targets?

We build to strict Part L (Energy) and Part O (Overheating) requirements. This includes managing pre-completion airtightness testing, installing low-carbon heating systems, and ensuring the final development achieves the highest possible EPC ratings for the rental or sales market.

Complete delivery from groundworks to Practical Completion.

Tarj Construction delivers high-performance new build projects across the residential, commercial and mixed-use sectors. Acting as your Principal Contractor and lead delivery partner, we drive programme control, commercial management, and stringent regulatory compliance—taking your development safely from initial site preparation and drainage through to final Practical Completion (PC).

Precision-led construction for complex developments.

Delivering a profitable and compliant new build requires seamless coordination between design intent, engineering specifications and on-site execution. Tarj Construction provides robust Principal Contractor services across London and Essex, managing complex construction sequencing and strict adherence to the Building Safety Act 2022. Our structured delivery framework ensures every phase—from structural weatherproofing and integrated M&E services to high-end internal fit-out—remains aligned with your contract timelines, commercial viability parameters, and long-term asset performance requirements.

Bespoke High-End Residential Homes
Multi-Unit Residential Schemes
Commercial & Purpose-Built Structures

Mixed-Use Developments
Developer-Led Investment Projects

Full Construction Lifecycle

New build projects delivered
through coordinated construction phases.

Pre-Construction Planning

Successful builds begin long before physical construction starts, led by our consultancy support for developers & contractors.

Feasibility reviews, site readiness, and topographical assessments
Construction sequencing, logistics, and programme planning across London and Essex
Commercial management, budget alignment, and procurement strategy
Coordination with architects, structural engineers, and statutory undertakers
Building Safety Act 2022 alignment and Principal Designer/Contractor CDM 2015 duties
Early-stage regulatory planning and proactive construction risk management

Groundworks & Structural Framework

Stable foundations and structural systems form the backbone of every development, monitored continuously by our quality assurance & site oversight.

Site clearance, bulk excavation, and ground stabilization
Piled, raft, or trench fill foundations and reinforced concrete works
Structural steel frame (SFS), timber frame, or traditional masonry erection
SuDS-compliant drainage systems, attenuation tanks, and Section 50 sewer connections
Structural integrity inspections and engineering verification prior to pour

Building Envelope & External Construction

The building envelope protects the structure while supporting stringent UK energy performance and durability targets.

External wall construction, cavity barriers, and fire-stopping integration
Roof structure installation and weatherproofing (pitched or flat systems)
Part L (Energy) and Part O (Overheating) compliant glazing and door systems
Thermal insulation and mandatory pre-completion airtightness testing
External access works, Section 278 highways alterations, and landscaping

Mechanical, Electrical & Core Internal Works

Essential infrastructure systems are integrated to meet the Future Homes Standard and modern living expectations.

NICEIC electrical distribution, data infrastructure, and Part S compliant EV charging
Low-carbon heating (e.g., ASHP), plumbing, and water supply
Part F compliant mechanical ventilation and heat recovery (MVHR) integration
Internal partitions, acoustic (Part E) insulation, and base interior works
Preparation for final handover state (shell & core, Cat A, or turnkey depending on scope)

Quality Control & Project Handover

Rigorous auditing ensures every building meets safety and performance standards, secured by our project governance & documentation.

Independent QA auditing and structural warranty stage inspections (e.g., NHBC, Premier Guarantee, LABC)
Final Local Authority Building Control (LABC) compliance verification and sign-off
Fire safety strategy sign-off, supported by our building safety audits
Establishing the 'Golden Thread' of information for building safety compliance
Handover of the Health & Safety File, EPCs, O&M manuals, and Practical Completion (PC)

Why Professional New Build Construction Matters

Reliable delivery across
every stage of development.

Programme Reliability

Carefully coordinated construction sequencing, robust Construction Risk Management, and proactive trade management keep your London and Essex developments aligned with strict JCT contract timelines and milestone deliverables.

Commercial & Cost Control

Transparent procurement planning, rigorous variation monitoring, and active commercial oversight mitigate unexpected financial exposure and protect developer profit margins and Gross Development Value (GDV) throughout the build.

Strict Regulatory Compliance

Continuous compliance checks, supported by our Building Safety Audits, ensure your project aligns seamlessly with the Building Safety Act 2022, UK Building Regulations, and structural warranty conditions (e.g., NHBC/Premier Guarantee).

Long-Term Asset Performance

Through independent Quality Assurance & Site Oversight, we ensure buildings achieve exceptional durability, Future Homes Standard energy performance, and minimal snagging during the Defect Liability Period (DLP).

Clear stages. Commercial control.

How new build projects are delivered.

We keep compliance practical: clear stages, documented evidence, and a trail you can rely on for governance and audit.

01. Site Appraisal & Feasibility

Understanding your Gross Development Value (GDV) goals, site constraints, and statutory requirements across your London or Essex plots.

02. Pre-Construction & Procurement

Discharging pre-commencement planning conditions, JCT contract preparation, and detailed infrastructure and drainage programme coordination.

03. Principal Contractor Delivery

Managing site logistics, structural execution, and complex supply chain coordination from groundworks to watertight envelope.

04. Quality & Compliance Auditing

Continuous stage inspections verifying workmanship against UK Building Regulations and structural warranty standards (e.g., NHBC/Premier Guarantee).

05. Practical Completion & Handover

Executing a final handover clean, securing final LABC sign-offs, compiling O&M manuals, and delivering the statutory Health & Safety File.

06. Defects Liability Period (DLP) Management

Structured post-handover support to manage snagging and ensure long-term asset performance.

Planning a new development?

Build your project strong, efficient, compliant, future-ready.

Speak with our construction team to discuss your new build project. From early planning through to completion and post-handover support, we deliver reliable construction that protects your investment.

Discuss Your Project →

Frequently asked questions

Yes. Tarj Construction acts as the statutory Principal Contractor for new build developments across London and Essex. We take full responsibility for site liability, health and safety management, trade coordination, and secure site setup from the first day of groundworks through to Practical Completion (PC).

We predominantly operate under JCT (Joint Contracts Tribunal) frameworks, including JCT Design and Build (D&B) and Standard Building Contracts. We ensure transparent contract administration, clear milestone reporting, and strict variation control to protect your commercial viability.

Compliance is built into our daily site operations. We implement rigorous quality assurance protocols and digital record-keeping to maintain the mandatory 'Golden Thread' of building information. This ensures that fire safety strategies and structural integrities are fully documented for the Building Safety Regulator (BSR) and future asset owners.

Absolutely. We work proactively with Local Authority Building Control (LABC), Approved Inspectors, and major structural warranty providers such as NHBC, Premier Guarantee, and LABC Warranty. We manage all mandatory stage inspections and certifications to ensure there are no delays in securing your final Completion Certificates.

We build to strict Part L (Energy) and Part O (Overheating) requirements. This includes managing pre-completion airtightness testing, installing low-carbon heating systems, and ensuring the final development achieves the highest possible EPC ratings for the rental or sales market.

Our commitment does not end when heavy construction stops. Before Practical Completion, we execute a meticulous builders' handover clean to ensure the property is instantly ready for the sales or rental market. During the standard Defects Liability Period (DLP), we provide structured post-completion support to rectify snagging issues. We also ensure you are fully equipped with comprehensive O&M (Operations & Maintenance) manuals and the statutory Health & Safety File.