Single-storey rear addition
Create a generous kitchen and family room with direct garden access and flexible zones for daily use.
House Extension in Brentford
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At New Line Construction Ltd we specialise in enhancing and adding value to beautiful period homes in West London.
Plan structure and rooms together
House extensions in Brentford with a clear route from shell to finish
A Brentford extension may need to solve several needs at once: a larger kitchen, a better garden connection, an extra bedroom or more balanced family space. Single-storey and double-storey options should be judged by the rooms they create, not simply by their external footprint.
Our builders in West London can coordinate this work with house refurbishment in West London as part of a wider improvement to your home.
We coordinate the construction package from groundworks and structural openings through to services, plastering, joinery and decoration. Treating the shell and interior as one scope helps avoid late conflicts between beams, drainage, kitchen layouts and ceiling details.
Defined scopeRooms, services and finishes coordinated before construction decisions become urgent.
One delivery sequenceBuilding work and interior completion organised as connected packages.
Brentford focusPlanning shaped around the property, access and building context.
Design priorities
Decide where added volume delivers the greatest value
The right extension form depends on plot, existing structure, approvals and the household brief.
Double-storey extension
Combine improved living space below with a bedroom, bathroom or study above, where design and approvals allow.
Side and wraparound layouts
Use underdeveloped side space to improve width, storage and circulation across the ground floor.
Targeted structural remodelling
Remove awkward pinch points and align old rooms with the proportions of the new addition.
A detail that changes the result
Make early structural choices visible in the finished rooms
Column positions, beam depths and floor levels influence everything from kitchen runs to lighting lines. We review those relationships before work advances, because a technically sound solution should also support a clean interior. The same applies to drainage routes, boiler capacity and the location of electrical distribution.
Where a home remains occupied, separating the work zone and planning temporary access are important. For larger two-level schemes, weatherproofing and the order of upper-floor alterations become key programme decisions.
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A controlled route from opening-up to the finished Brentford extension
Early decisions are recorded before they affect structure, first-fix work, ordering or the quality of the finished rooms.
Establish the brief
Describe the additional space and how it should change daily life.
Verify property conditions
Review access, levels, drainage, existing construction and neighbouring context.
Resolve approvals and details
Bring drawings, structural information, approvals and key selections into one buildable scope.
Sequence construction packages
Move from enabling works and structure through weatherproofing, first fix and interior construction.
Review the completed space
Complete details, test relevant systems and review the new rooms against the agreed work.
Budget clarity
What shapes the cost of house extension in Brentford?
A double-storey project is not priced by doubling a single-storey figure. Roof alterations, upper-floor structure, bathrooms, stairs, scaffolding and changes to the existing plan all affect the total. Ground conditions and access remain important too.
Useful information before quotation
- Current drawings or a measured survey
- Known permissions and building conditions
- The intended layout and service changes
- Kitchen, bathroom and joinery expectations
- Access rules and occupation arrangements
Before construction
Planning and technical checks
The design team should confirm which permissions and notices apply to the specific property. We use the coordinated drawings, structural details and specification to organise procurement and construction.
New Line Construction uses the approved and coordinated information supplied for the project. We do not replace the appointed architect, engineer, surveyor, freeholder or statutory authority.
Plan the wider project
Related services for a joined-up result
Use these pages to compare the scope or connect the project with related work in the same property.
House Extensions in West London
Explore the connected service and compare how it supports the wider project brief.
House Renovation Brentford
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Loft Conversion Brentford
Explore the connected service and compare how it supports the wider project brief.
Common questions
House Extension in Brentford FAQ
Can a Brentford house be extended on two storeys?
Potentially, but feasibility depends on the property, relationship to neighbours, design and approvals. A designer should test the massing and room arrangement before the construction scope is fixed.
Is a double-storey extension more disruptive?
It normally affects more of the existing building and can require roof, bedroom and service alterations. Good phasing and protection are therefore especially important.
Can a bathroom be added on the upper floor?
Yes where drainage, ventilation, structure and layout can be resolved. Locating it sensibly in relation to existing services can reduce unnecessary complexity.
What information helps control the budget?
Dimensioned drawings, structural design, a window and door schedule, service requirements and a clear finish specification allow major packages to be priced with fewer assumptions.
Do you complete the interior as well as the shell?
Yes. The scope can include partitions, plumbing, electrics, heating, plastering, flooring, fitted elements and decoration, subject to the agreed quotation.
Discuss your property
Start with the change you want the completed home to deliver
Tell us about the current layout, the work you are considering and the finish level you expect. We can then discuss the next practical step.