Use & layout
Explain how you want to use the new space and which parts of the existing layout you would like to improve.
Building Services London
House Extensions in London
Create space that works for your home. Discuss house extension work and connected improvements with Building Services London.
Your extension
Make more of the home you already have
A house extension starts with a practical question: what would make your home work better? You may want a larger kitchen, a more useful dining space or additional room for a growing household. Building Services London offers house extension services across London and surrounding M25 areas.
Before focusing on finishes, consider how the additional space should connect to the rooms you already use. The route through the home, the position of openings and the relationship with the garden can be as important as the added floor area.
Tell us what you would like to change and where the property is located. If drawings, photographs or other project information are already available, they can help explain the proposal. If you are still exploring ideas, a short description is a useful starting point.
Connected spaces
Consider the whole room, not just the extra space
Glazing, flooring, joinery and the kitchen layout all influence how an extension feels and functions. Include the associated improvements you are considering when describing your project.
imagery shows design possibilities, rather than a completed BSL project.
Project scope
What to consider before requesting a quote
Property & access
Share the postcode and any known restrictions affecting access, deliveries or how the property can be used during work.
Openings & finishes
Consider glazing, doors and interior finishes alongside the building work, even if the choices are not yet final.
Planning the work
Separate early ideas from agreed scope
Information for the project
The information needed will depend on the proposed extension and the existing property. Available drawings, dimensions and structural information can help establish what is being considered.
Identify the relevant technical design and approval requirements for your proposal. Confirm who is responsible for each part rather than assuming it is included in building work.
Understanding your quotation
A useful quotation needs a defined scope. Ask what is included, which materials or finishes are allowed for and which items remain undecided.
Timing and cost depend on the specific work, site conditions and agreed requirements. A generic price or completion promise would not reflect your property, so these should be discussed for the actual project.
Related improvements
Bring the connected details into the conversation
Extensions often sit alongside kitchen changes, new doors or glazing, flooring and decoration. Mention these alongside the main work so the boundaries of the project can be understood.
BSL’s wider building and refurbishment services and residential services provide a route to explore these related needs. There is no need to finalise every product choice before making an initial enquiry.
Start with your postcode, what you would like to achieve and a preferred contact method. Free quotations are available. Any guarantee scope and terms should be confirmed in writing with the proposed work.
Planning the work
Think through the connection with the existing house
An extension enquiry becomes more useful when it explains the existing rooms as well as the proposed new space. Identify the routes through the house, the rooms that feel restricted and the relationship with the garden. A larger footprint is only one part of the brief; storage, daylight, furniture and everyday circulation also help define what you want the completed project to achieve.
Keep the building work and fit-out requirements visible in the same conversation. A kitchen, glazed opening, rooflight and new floor may all relate to the extension, but each needs a clear supply and installation scope. Share drawings where available and identify any items still undecided so the quotation distinguishes defined work from assumptions or future choices.
Questions answered
House extension FAQs
Can I enquire while I am still considering options?
Yes. Explain your main goals and what information is already available. The details needed for a quotation can then be discussed.
Can I include a kitchen or glazing in my enquiry?
Yes. Mention connected services when describing the work so the proposed scope can be considered together.
Can you give a standard extension price here?
No standard price is presented because the property, scope, specification and access differ between projects. Request a quotation for the actual work.
What is the quickest way to get in touch?
Call 020 3553 2214. Online submissions will become available once the enquiry provider is connected.
How can I compare extension quotations?
Provide the same current drawings and scope to each proposal. Check the treatment of preparation, structural work, glazing, services, finishes and any allowances. Ask for exclusions to be stated. A headline figure is more useful when you understand the specification and responsibilities behind it, including work you intend to arrange separately.
What should I mention about staying in the house?
Explain the rooms and access routes that need to remain usable, together with household constraints. Discuss how deliveries, storage and the sequence of work relate to daily use. The practical arrangement should be agreed for the actual property and project, particularly where the new extension connects directly with occupied rooms.
London coverage
House Extensions across London
Discuss house extensions for properties across North, East, South and West London. Share your postcode, the work involved and any access requirements when requesting a free quotation.
Free quotations
Tell us about your project
From a single improvement to a larger refurbishment, start with your postcode and a few words about the work.
- Residential and commercial enquiries
- London and surrounding M25 areas
- Drawings, photographs and budgets optional
Prefer to talk through your project?020 3553 2214
Email us: [email protected]