Corten steel extension with folded roof inspired by existing pitched roofs at Thirsk Cottage.

Transforming Highgate’s Thirsk Cottage: A Corten Steel Extension Breathing New Life into Tradition

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Written by John Oliver

2026-09-24

In the heart of Highgate, London, architects at Finkernagel Ross transformed Thirsk Cottage from a dark and disjointed house into a brighter contemporary family home, morphing it from a dark and disjointed house into a brighter contemporary family home. With a minimal addition of just 430 square feet, the team drew inspiration from the cottage’s eclectic pitched roofs to craft a modern corten steel extension.

Corten steel extension with folded roof inspired by existing pitched roofs at Thirsk Cottage.
Explore the architecture of Thirsk Cottage, where Finkernagel Ross drew inspiration from the home’s existing pitched roofs to create a contemporary folded roof extension.

Pitched Roofs Inspire Corten Steel Extension

The cottage’s distinct roofscape became the focal point of the redesign. By studying its myriad forms and angles, Finkernagel Ross extended the architectural narrative with a corten steel extension. They introduced a folded roof design, seamlessly blending new spaces like the kitchen, dining, and family areas. A single column supports an eight-meter span, creating openness beneath the clear, zigzag roofline.

Extending the architectural narrative with modern elements, explore another bold modern extension in Melbourne for inspiration on integrating contemporary design with historic structures.

Corten steel cladding matches the warm terracotta roof tiles on the Thirsk Cottage extension.
See how Corten steel was used on the extension of Thirsk Cottage to echo the warm terracotta roof tiles of the original Highgate cottage.
Corten steel cladding matches the warm terracotta roof tiles on the Thirsk Cottage extension.
See how Corten steel was used on the extension of Thirsk Cottage to echo the warm terracotta roof tiles of the original Highgate cottage.

Corten Steel: A Bridge Between Eras

Choosing corten steel for the extension pays homage to the cottage’s terracotta tiles, forging a visual link between the old and the new. This corten steel extension grants the addition a contemporary façade, its angular profile reflecting the quaint geometry that inspired the design.

Corten steel cladding matches the warm terracotta roof tiles on the Thirsk Cottage extension.
See how Corten steel was used on the extension of Thirsk Cottage to echo the warm terracotta roof tiles of the original Highgate cottage.

A Harmonious Garden Integration

The renovation also redefined the home’s relationship with its garden. Full-height windows forge a connection with the greenery, inviting seasonal changes and sunlight indoors. This seamless blend of patio and interior creates a fluid transition from cozy cottage confines to modern expanse, embodying a modern renovation.

Contemporary extension at Thirsk Cottage featuring expansive glazing opening onto the garden and patio.
Take a look at the patio and garden connection at Thirsk Cottage, where expansive glazing opens the contemporary extension towards the greenery beyond.
Contemporary extension at Thirsk Cottage featuring expansive glazing opening onto the garden and patio.
Take a look at the patio and garden connection at Thirsk Cottage, where expansive glazing opens the contemporary extension towards the greenery beyond.

Inviting Gathering Spaces

Natural light bathes the dining area, where black-framed glass walls beckon the outdoors in. Skylights and pitched glazing amplify brightness, while a warm wood table and woven chairs exude a relaxed atmosphere. Pendant lights provide a finishing touch for any gathering, whether casual or elaborate.

Dining area with black-framed glazing, wood elements, and garden views at Thirsk Cottage.
Explore the light-filled dining area at Thirsk Cottage, featuring black-framed glazing, warm wood, woven chairs and views towards the garden.
Dining area with black-framed glazing, wood elements, and garden views at Thirsk Cottage.
Explore the light-filled dining area at Thirsk Cottage, featuring black-framed glazing, warm wood, woven chairs and views towards the garden.
Dining area with black-framed glazing, wood elements, and garden views at Thirsk Cottage.
Explore the light-filled dining area at Thirsk Cottage, featuring black-framed glazing, warm wood, woven chairs and views towards the garden.

Open Living Environments

In the living room, vaulted ceilings and dual skylights enhance the airy ambiance. A curved cream sofa and sculptural elements soften the architecture, while a low fireplace adds warmth.

Bright living room with vaulted ceiling, black-framed windows, and long fireplace at Thirsk Cottage.
Step inside the living room at Thirsk Cottage, where a vaulted ceiling, black-framed windows, skylights and a long fireplace create a bright and comfortable space.
Bright living room with vaulted ceiling, black-framed windows, and long fireplace at Thirsk Cottage.
Step inside the living room at Thirsk Cottage, where a vaulted ceiling, black-framed windows, skylights and a long fireplace create a bright and comfortable space.

A Central Kitchen Hub

Beneath the dramatic folds of the roof, the kitchen features pale wood cabinetry and a grand travertine island. Skylights pour in daylight, emphasizing the tall ceilings, while understated fixtures maintain a streamlined look.

Spacious kitchen with pale wood, travertine island, and skylights under vaulted roof at Thirsk Cottage.
Discover the spacious kitchen at Thirsk Cottage, with pale wood cabinetry, a travertine island, microcement flooring and skylights beneath the dramatic vaulted roof.
Spacious kitchen with pale wood, travertine island, and skylights under vaulted roof at Thirsk Cottage.
Discover the spacious kitchen at Thirsk Cottage, with pale wood cabinetry, a travertine island, microcement flooring and skylights beneath the dramatic vaulted roof.
Spacious kitchen with pale wood, travertine island, and skylights under vaulted roof at Thirsk Cottage.
Discover the spacious kitchen at Thirsk Cottage, with pale wood cabinetry, a travertine island, microcement flooring and skylights beneath the dramatic vaulted roof.
Spacious kitchen with pale wood, travertine island, and skylights under vaulted roof at Thirsk Cottage.
Discover the spacious kitchen at Thirsk Cottage, with pale wood cabinetry, a travertine island, microcement flooring and skylights beneath the dramatic vaulted roof.

Seamlessly Connecting Past and Present

Contrasting with the expansive kitchen, the sitting room offers a more intimate space, integrating built-ins with a creamy sofa, leather seating, and a striking stone coffee table..

Sitting room featuring black-framed glass wall, leather furniture, and fireplace at Thirsk Cottage.
Explore the sitting room at Thirsk Cottage, where a black-framed glass wall, pale wood, warm leather and a dark fireplace create a comfortable balance of modern and natural materials.
Sitting room featuring black-framed glass wall, leather furniture, and fireplace at Thirsk Cottage.
Explore the sitting room at Thirsk Cottage, where a black-framed glass wall, pale wood, warm leather and a dark fireplace create a comfortable balance of modern and natural materials.
Sitting room featuring black-framed glass wall, leather furniture, and fireplace at Thirsk Cottage.
Explore the sitting room at Thirsk Cottage, where a black-framed glass wall, pale wood, warm leather and a dark fireplace create a comfortable balance of modern and natural materials.
Sitting room featuring black-framed glass wall, leather furniture, and fireplace at Thirsk Cottage.
Explore the sitting room at Thirsk Cottage, where a black-framed glass wall, pale wood, warm leather and a dark fireplace create a comfortable balance of modern and natural materials.
Sitting room featuring black-framed glass wall, leather furniture, and fireplace at Thirsk Cottage.
Explore the sitting room at Thirsk Cottage, where a black-framed glass wall, pale wood, warm leather and a dark fireplace create a comfortable balance of modern and natural materials.

A Versatile Creative Workspace

Oak cabinetry lends the home office a serene ambiance, with French doors opening onto the garden. This workspace integrates books, ceramics, and multimedia into its elegant design.

Home office with oak built-ins, French doors, open shelving, and integrated DJ equipment at Thirsk Cottage.
See the home office and media space at Thirsk Cottage, featuring warm oak built-ins, garden-facing French doors, open shelving and integrated DJ equipment.
Home office with oak built-ins, French doors, open shelving, and integrated DJ equipment at Thirsk Cottage.
See the home office and media space at Thirsk Cottage, featuring warm oak built-ins, garden-facing French doors, open shelving and integrated DJ equipment.

Bright Fitness Retreats

The home gym, combining warm wood and sleek equipment, features skylights and mirrors for a spacious feel. Adjacent is a compact, wood-paneled sauna, maintaining visual connection with the bathroom through a glass door.

Home gym with timber finishes, indoor pool, sauna, and glass walls at Thirsk Cottage.
Take a look at the home gym, indoor pool and wood-lined sauna at Thirsk Cottage, combining warm timber, black equipment, skylights and glass walls.
Home gym with timber finishes, indoor pool, sauna, and glass walls at Thirsk Cottage.
Take a look at the home gym, indoor pool and wood-lined sauna at Thirsk Cottage, combining warm timber, black equipment, skylights and glass walls.
Home gym with timber finishes, indoor pool, sauna, and glass walls at Thirsk Cottage.
Take a look at the home gym, indoor pool and wood-lined sauna at Thirsk Cottage, combining warm timber, black equipment, skylights and glass walls.

Garden-Adjacent Guest Rooms

Situated off the patio, the guest bedroom strengthens the link between indoor and outdoor areas, extending this visual continuity throughout the home.

Connecting indoor and outdoor spaces effectively, Megowan Architectural crafts seamless indoor-outdoor flow in a stunning bay view home.

Guest bedroom adjacent to patio and garden, offering indoor and outdoor connectivity at Thirsk Cottage.
Discover the guest bedroom at Thirsk Cottage, positioned beside the patio and garden for a close connection between the private interior and outdoor space.

Revitalized Arrival Experience

The formerly cluttered entrance now boasts a double-height design, flooded with light from a new dormer, enhancing navigability and introducing the varied scales of interior spaces.

Entrance and stair hall with double-height space and dormer for added light at Thirsk Cottage.
Explore the entrance and stair hall at Thirsk Cottage, where a double-height space and new dormer bring more daylight into the home’s arrival sequence.

A Sanctuary Within the Home

In the primary bedroom, muted tones and wood accents create a tranquil environment. A four-poster bed and ornate fireplace provide structure and focal interest, maintaining a minimalist yet inviting space.

Primary bedroom featuring soft tones, oak flooring, ornate fireplace, and four-poster bed at Thirsk Cottage.
Step inside the primary bedroom at Thirsk Cottage, featuring soft neutral tones, pale oak flooring, warm wood, an ornate black fireplace and a slim four-poster bed.

The bathrooms continue the home’s warm, understated material palette, with travertine bringing a natural quality to both spaces, featuring bold, architectural fixtures and airy layouts. Each room carefully balances form and function, integrating natural elements and contemporary design.

Primary bedroom featuring soft tones, oak flooring, ornate fireplace, and four-poster bed at Thirsk Cottage.
Step inside the primary bedroom at Thirsk Cottage, featuring soft neutral tones, pale oak flooring, warm wood, an ornate black fireplace and a slim four-poster bed.

Thirsk Cottage exemplifies transformative design, where just 20 square meters of added space significantly alter the home’s atmosphere. By harnessing the structure’s historic charm and integrating modern elements, Finkernagel Ross melded tradition and innovation into a vibrant dwelling, highlighted by the corten steel extension.

Photography by French+Tye | Architecture & Design: Finkernagel Ross | Contractor: Chester Row | Structural Engineer: SD Structures

Source: contemporist.com

Frequently asked questions

What inspired the corten steel extension at Thirsk Cottage?

The architects drew inspiration from the cottage’s eclectic pitched roofs to craft the modern corten steel extension. By studying its forms and angles, they extended the architectural narrative with a corten steel extension featuring a folded roof design.

How does the renovation integrate indoor and outdoor spaces?

The renovation redefined the home’s relationship with its garden by incorporating full-height windows that forge a connection with the greenery, inviting seasonal changes and sunlight indoors. This design creates a fluid transition from the cozy cottage confines to a modern expanse.

How does the new entrance enhance Thirsk Cottage?

The formerly cluttered entrance now boasts a double-height design, flooded with light from a new dormer, enhancing navigability and introducing the varied scales of interior spaces.