MSK Design Architectural, interior and construction design
residential extension modern interior
residential reconfiguration development extension hadley wood london planning permission
Open-concept living space with exposed yellow brick wall, a dining table with wooden chairs, a modern kitchen with shelving and white cabinets, and a ceiling light fixture with multiple white globes.
A row of modern townhouses with red-tiled roofs, white window frames, and a brick lower level, surrounded by wooden fences and lush green trees.
Open-concept kitchen and dining area with brick walls, skylight, and large windows showing an outdoor garden.
Interior view of a building under construction showing exposed wooden framing, beams, and roof trusses, with a window opening at the far end and a coat hanging on the wall to the right.
View from inside a room with brick walls and a large glass door leading to a backyard garden. The garden has potted plants on a low brick wall, trees with orange and yellow leaves, and a grassy lawn.
Modern dining area with a large white dining table, white chairs, and a row of vases with hydrangea flowers, large windows showing trees outside, and two hanging pendant lights.
Modern loft conversion with zinc dormers
A row of modern townhouses with brick and rendered exteriors, large windows and dormer windows
Large modern rear extension with architectural glazing and large terrace with glazed balustrad
A large, Tudor-style house with black and white timber framing, brick accents, and a garage. Two cars are parked in front, with a brick and wrought iron fence surrounding the property, and trees visible nearby.
Modern two-story house with large glass windows, surrounded by greenery and trees, during sunset or sunrise.
Construction site with tools and a blueprint on a worktable, wooden framing in the background
Exploded view of a modern house's architectural design, showing multiple layers and components including walls, windows, roof, and interior elements.
Construction site of a building with exterior wall to a dormer under construction, window installation, and scaffolding in place.
Construction site with scaffolding, showing a multi-story brick building under construction with workers on site.
Multi-story brick residential building with a gray metal zinc roof with dormers and several large windows, viewed from a balcony with a railing. There are small fenced outdoor areas with wooden fences and sheds in the courtyard.
Scaffolding surrounding a two-story house being renovated, with a mix of brick and half-timbered exterior, under a partly cloudy sky.
A man installing large window panes in an attic space under construction. The attic has exposed insulation, wall studs, and a sloped ceiling with skylights, with construction tools and materials scattered on the floor.
A two-story house under renovation with scaffolding and white protective sheeting covering the upper part, a red car parked in front, and construction materials on the driveway and sidewalk.
Interior view of a house under construction, with exposed wooden roof trusses and two skylight windows in the sloped ceiling.
Construction site of a brick house with scaffolding, partially built, surrounded by dirt and building materials.
Interior view of a house under construction, showing exposed wooden framing, unfinished walls, a large window opening, and construction materials.
Modern house with large backyard featuring trees, swings, and a sports net under a bright blue sky.
A backyard garden with a grass lawn, fallen leaves, flowering bushes, a black patio, and a dark painted house with a large sliding glass door and two chairs outside. There is a wooden bench with a closed umbrella in the corner, and a small fence with

Experienced in delivering quality residential extensions and loft conversions across London and Hertfordshire since 2007

Design-led, client focused and with you every step of the way, we provide the full package from design to build with integrity

A house under construction with scaffolding around it, brick walls, and a partially built roof on a sunny day.

Single or double storey extensions

Looking to:

  • Increase your Living space?

  • Enlarge the Kitchen?

  • Add a Utility Room?

  • Add Bedrooms

  • Enlarge the first floor so all Bedrooms have an ensuite?…or

  • All of the above?

Speak to us about how a planning strategy could maximise your development potential.

Interior of a house under construction with visible wooden framing, sloped roof, and an open window showing greenery outside.

Loft conversion

A successful loft conversion starts with smart planning.


Maximising the potential of your space requires a deep understanding of the planning process, strong technical knowledge, and a well-coordinated design that meets your specific spatial needs.

If you're looking for something more than the standard approach, talk to us about how our expert space planning and bespoke joinery services can bring real depth, comfort, and value to your home.

With over 300 loft conversions completed from Victorian homes to Grade II listed buildings, we bring experience, creativity, and precision to every project.

Open-concept kitchen and dining area with exposed brick wall, wooden cabinets, a large wooden dining table, bookshelf, and green plants, with a chandelier hanging from the ceiling

Design, Planning and Technical services

We are a multi-disciplined, design-led practice with a proven track record of delivering high-quality residential homes and extensions since 2007.

Our team offers complete peace of mind by managing your statutory requirements needed to build with confidence, including:

  • Planning Permission

  • Building Control Approval

  • Utility Build-Over Agreements

  • Party Wall Awards

From concept to completion, we ensure every detail is handled professionally and in compliance with current regulations; so you can focus on creating your ideal home.

Construction site with a workbench holding power tools, a ruler, and blueprints, inside an unfinished building with exposed wooden framing and brick walls.

Our seven stages to build

Successful developments begin with careful planning.

At MSK / House Build, every client receives the same high level of attention regardless of project size.

From initial concept through to final handover, we follow our structured Seven Stages to Build process. This approach ensures consistency, clarity, and quality at every step, helping us deliver your home with precision and care.

We design, we plan, we build…

At MSK House Build, we specialise in intelligent space planning and in building homes that people truly want to live in - delivered to plan, on time, and within budget.

We specialise in delivering domestic developments, including home extensions and residential projects for homeowners.

Get honest advice on your development potential and what it could cost from day 1*

SELECTION OF PROJECTS

Crown Lane

Crown Lane
Hadley Road

Hadley Road
Strafford Road

Strafford Road
Hadley Wood

Hadley Wood
Ewelme Road

Ewelme Road
Chiddingfold

Chiddingfold
Myddleton Park

Myddleton Park
Barking Road

Barking Road
Greenwich

Greenwich
Ladbroke Road

Ladbroke Road