Experienced Structural Engineering Consultant in London
Lenio Consultants is a Croydon-based structural engineering consultancy providing structural design, structural calculations and independent structural surveys for residential and commercial property across Croydon, Sutton, London and the wider UK. We help homeowners, architects and developers build safely and compliantly, from first concept to building-control sign-off.
Structural Engineers in Croydon & Sutton
Lenio Consultants specialises in reliable, cost-effective structural design and structural survey services for residential, commercial and renovation projects. We have built a strong reputation for high-quality engineering that complies fully with UK Building Regulations and British Standards, supporting clients throughout Croydon, Sutton, London and the UK.
We provide expert structural design, structural calculations and engineering support, helping clients move confidently from concept to construction. Our focus is on practical, safe and buildable designs that reduce risk, control cost and ensure long-term performance, at every stage of a project. We work efficiently from your drawings and project information, keeping the process fast, convenient and cost-effective.
Our team of Professionally qualified engineers and technical specialists brings expertise across residential housing, commercial developments, extensions, loft conversions, structural alterations, steel structures and reinforced concrete design. Explore our structural design services and structural survey services.

Meet the Structural Engineer Leading Lenio
Sadadcharam Easwaran
Chartered Civil & Building Engineer · CEng, MICE, MCABE
Lenio Consultants is led by Sadadcharam Easwaran, a Chartered Civil Engineer (MICE) and Chartered Building Engineer (MCABE) with extensive experience in structural design, building construction and project delivery. He has held senior engineering, design management and project leadership roles on major UK projects including High Speed 2 (HS2), the Thames Tideway Tunnel and Heathrow Terminal 5.
This deep understanding of structural behaviour, foundations, ground movement and construction methodology underpins every design Lenio issues, giving homeowners, architects and developers across Croydon, Sutton and the wider capital clear, dependable structural engineering they can build with confidence.
Connect on LinkedInProfessional Qualifications
- Chartered Engineer (CEng)
- Member of the Institution of Civil Engineers (MICE)
- Member of the Chartered Association of Building Engineers (MCABE)
- Member of the British Tunnelling Society (BTS)
Education
- BEng (Hons) Civil Engineering – University of London
- MSc Soil Mechanics – Imperial College London
- Diploma of Imperial College (DIC)
Professional Memberships
We are proud members of the Institution of Civil Engineers (ICE) and the Chartered Association of Building Engineers (CABE). These memberships reflect our commitment to recognised engineering standards, ethical practice and the safety of every structural design and survey we deliver.
The Institution of Civil Engineers (ICE)
The Chartered Association of Building Engineers (CABE)Our Core Values
Our work is guided by a clear set of values that put clients first and keep quality and integrity at the centre of every project.
Customer First
Practical, cost-effective and compliant structural solutions tailored to each client’s needs and budget.
Technical Excellence
Continuous improvement and modern engineering standards on every calculation and drawing we issue.
Ownership
Full accountability from concept to completion, so your project is delivered accurately and on time.
Quality
Strict design checks and multi-stage review to ensure safe, durable and fully compliant structures.
Integrity
Honest, transparent advice and clear communication that builds trust throughout the project.
Sustainability
Efficient design that reduces material waste and supports long-term environmental performance.
Our Quality Assurance Approach
Quality assurance is built into every project. Our structural drawings progress through a clear sequence of design and verification stages, and each stage is reviewed before the next begins.
Every project is handled by a dedicated team with defined roles, a technician, an engineer, a checker, an independent reviewer and an approver, so each drawing is independently checked for accuracy and compliance before it is issued. This reduces errors and supports safer, more reliable construction.
Enquiry & Drawings
We review your architect’s drawings and project requirements, discuss what you want to achieve, and confirm the scope before any work begins.
Project Briefing
We agree the scope, the loads the structure must carry and the design criteria, so everyone is clear on exactly what the design has to deliver.
P0 Preliminary Design
We prepare the concept design and carry out initial structural analysis of the key elements, setting the direction for the detailed work that follows.
D0 Detailed Design
We refine the calculations and produce coordinated structural drawings, each one checked and independently reviewed for accuracy before issue.
Good for Construction
We issue the approved, construction-ready drawings and calculations to site, ready for your builder and for building control sign-off.
Frequently Asked Questions
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Work With a Qualified Structural Engineering Team
Tell us about your project and get clear, practical engineering advice and a fixed, no-obligation quote from Lenio Consultants’ chartered structural engineers in Croydon and Sutton.