House Extensions in Worcestershire, Herefordshire & Gloucestershire

Extension Types We Deliver

Modern kitchen with black cabinets, a wooden breakfast bar with three black stools, and a stove with a copper backsplash. There is artwork on the walls, large windows, and built-in appliances. built by cortis construction

  • Single‑Storey Extensions — Ideal for open‑plan kitchens, dining areas, and family spaces.

  • Double‑Storey Extensions — Add bedrooms, bathrooms, or home offices while maintaining balance and proportion.

  • Rear & Side Extensions — Maximise your plot and enhance flow between indoor and outdoor living.

  • Wrap‑Around Extensions — Transform your home’s footprint with a complete reconfiguration.

  • Glass & Contemporary Extensions — Architectural glazing and minimalist detailing for a modern aesthetic.

Modern patio with brick flower beds, potted plants, and a large glass-windowed house. project design and built by cortis construction
Modern house with beige exterior walls, large windows, a section with wood siding, and a gray pitched roof with chimney stacks, set against an overcast sky.

Transform Your Home with Architectural Precision

At Cortis Construction, we specialise in creating contemporary, design‑led house extensions that elevate the way you live. Whether you’re expanding for space, light, or lifestyle, our award‑winning team delivers seamless extensions that blend architectural elegance with structural integrity.

Our approach combines creative design thinking with meticulous construction management — ensuring every extension feels intentional, refined, and built to last.

Our Expertise

  • Design‑Led Planning

    We begin with a detailed design consultation to understand your vision, spatial needs, and aesthetic preferences. Our in‑house design and planning service ensures your extension complements your existing architecture while meeting all planning and building regulations.

    Seamless Integration

    Every extension is crafted to harmonise with your home’s character — whether it’s a period property or a modern build. We focus on proportion, materials, and flow to create spaces that feel natural and cohesive.

    Structural Excellence

    Our construction team brings decades of experience in complex builds, ensuring precision in foundations, steelwork, and finishes. We manage every stage with transparency and care.

    Energy Efficiency & Sustainability

    We incorporate modern insulation, glazing, and energy‑efficient systems to create comfortable, sustainable spaces that perform beautifully year‑round.

Why Choose Cortis Construction

  • Award‑Winning Craftsmanship — Recognised by the Federation of Master Builders for excellence.

  • Design‑Led Approach — Every project begins with architectural vision.

  • Transparent Project Management — Clear timelines, budgets, and communication.

  • Local Expertise — Serving Worcestershire, Herefordshire, and Gloucestershire with trusted regional partnerships.

  • Fully Insured & Accredited — Napit registered, FMB member, and fully compliant with UK building standards.

Worcestershire County Council trading standards approval sign with website www.uktsa.com

Our Process

Consultation & Concept — We meet to discuss your goals, budget, and design direction.

Design & Planning — Our team prepares drawings, planning applications, and structural coordination.

Construction & Delivery — We manage every detail, from groundwork to final finishes.

Completion & Aftercare — We hand over a finished space ready to enjoy, backed by full warranty and support.

Service Areas

We proudly deliver house extensions across:

Worcestershire — Worcester, Malvern, Droitwich, Evesham, Pershore, Kidderminster, Bewdley, Stourport, Tenbury Wells
Herefordshire — Hereford, Leominster, Ledbury, Ross‑on‑Wye, Bromyard, Kington
Gloucestershire — Gloucester, Cheltenham, Tewkesbury, Stroud, Cirencester, Forest of Dean

A modern living room with black fabric couches, a black glossy coffee table, a large mounted flat-screen TV, a small black shelf with electronic devices, a window with decorative frosted glass, and minimalist decor.