Extensions in Green Lane
Most extensions are decided long before anyone digs: how deep you can go without a planning application, what is in the ground, and where the daylight will come from once the back wall moves.
- Local to Green Lane
- Fully insured
- Free fixed quotes
Extensions in Green Lane, the area around St Martin in the Fields. Single-storey rear, side return, wrap-around and two-storey, built from foundations to finished room with proper structural design behind the open spans. We are honest at survey about what the plot and the existing structure will take.
Working in Green Lane
Green Lane lies 2 miles south-west of Coventry city centre, in the CV3 postcode district.
Within walking distance you will find St Martin in the Fields and Finham Park School, and we work on properties throughout the streets around them.
The nearest areas we also cover are Finham (0.7 miles) and Stivichall (0.7 miles), so work in Green Lane sits inside the same run of the city.
- St Martin in the Fields
- Finham Park School
- Woodside Avenue Methodist Church
- Stivichall Primary School
- Cannon Park
- War Memorial Park
- Previous extensions count against your allowance, so what the house has already had matters.
- A quote with no written specification cannot be compared with another one.
- New brick will not match eighty-year-old brick, so the junction is a design decision.
- A rear extension of 4m detached or 3m semi/terraced is generally permitted development, subject to conditions.
- Foundations are the biggest unknown in the budget, and the depth is set by the ground, not the design.
The work itself, in plain terms
The extension work we take on across Green Lane (CV3), from a single-storey rear to a full two-storey build.
Single storey rear extensions
The most common project we build: a rear extension, sized where possible to stay within permitted development.
Two storey extensions
Two-storey extensions, cheaper per square metre because foundations and roof are shared, though more likely to need planning.
Side returns & side extensions
Side return infill on Victorian and Edwardian terraces, squaring off an awkward galley kitchen.
Planning & Building Control
Guidance on which approvals apply, including lawful development certificates, party wall notices and build-over agreements.
Groundworks & structure
Excavation, foundations, drainage and structure — the stages that decide whether everything above goes smoothly.
Full fit-out
First and second fix, plastering, flooring and decoration — handed over as a finished room, not a shell.
Built around how you own the property
Growing families
A plan that works around the family staying in the house while the work happens.
Open-plan projects
Rear builds combined with removing the original back wall, which is where the transformation actually comes from.
Investors
A clear view of what the work adds against what it costs, before anything is committed.
The jobs that start with a phone call
- 01
A design drawn to the permitted development limit without checking what a previous owner already added.
- 02
Drains or an inspection chamber running directly under the proposed footprint.
- 03
An extension started with no contingency, where the first surprise in the ground forced a visible compromise.
- 04
Foundations priced at an assumed depth, with no rate agreed for what happens if it has to go deeper.
- 05
A party wall notice served too late, holding up a start date that had already been booked.
- 06
A build-over agreement discovered at trench stage rather than at design stage.
What we check on a property in Green Lane
Every quote starts with a survey. These are the things we look at on extension work in Green Lane, and why each one changes the recommendation.
Matching brick and roof tile
We identify the existing materials and check availability of a match. Where no match exists, it is better to design around the difference than to hope nobody notices.
Levels, inside and out
The relationship between the existing floor, the new floor and external ground level affects damp detailing, thresholds and step-free access. It is much easier to resolve on paper.
Access for plant and materials
Whether a digger can reach the back garden, where a skip can stand and how far materials must be barrowed changes both method and price. Restricted access is workable but it has to be priced honestly.
Scaffold and working space
Where scaffold can stand, and whether it needs to go on a neighbour's land, is both a practical and a legal question. Better settled before a start date is agreed.
Boundary positions and the Party Wall Act
We check where the actual boundary runs and whether the work triggers party wall notices. Notice periods run to two months, so this belongs at the start of the programme.
Roof junction with the existing house
How the new roof meets the old is where extensions most often leak. We look at the abutment detail, the flashing and the height relationship at survey.
Simple, transparent, no pressure
Free inspection & advice
We visit, assess the job properly and explain your options in plain English — no pressure.
Transparent fixed quote
A clear, line-by-line quote with no hidden costs. You decide in your own time.
Expert workmanship
Our qualified, insured team completes the work on time, on budget and to a high standard.
Walkthrough & tidy finish
We clean up fully and don't leave until you're 100% happy.
Trusted across Coventry
Extensions in Green Lane — your questions answered
Still have a question? Our local team is happy to help — no pressure, no jargon.
Speak to us today0786 5778332Is Green Lane inside your normal service area?
Yes, and so is everything immediately around it: Finham (about 0.7 miles away), Stivichall (about 0.7 miles away), Cheylesmore (about 1.4 miles away) and Earlsdon (about 1.6 miles away). We cover the whole of Coventry, so there is no travel charge for any of them and no minimum job value.
Are you actually local to Green Lane?
Yes. Green Lane is around 2 miles south-west of the centre of Coventry, well within the area we work in every week. We are not a national firm subcontracting the job out.
Should we extend or move?
Worth doing the arithmetic properly. Moving costs stamp duty, agent and legal fees and removals, with nothing added to the property you leave. Extending costs the build and some months of disruption, and leaves you in the same place with the same neighbours and schools. Extending usually wins financially; moving wins when the location or the plot is the actual problem, and no amount of building fixes that.
Is a two-storey extension much more expensive than single-storey?
Per square metre it is usually cheaper, because the most expensive elements — foundations and roof — are shared across two floors. The total is obviously higher, and two-storey work is far more likely to need planning permission, more likely to engage the Party Wall Act, and more disruptive because it affects bedrooms. The per-metre efficiency is real, but it is not the only consideration.
What is a side return extension?
It is the infill of the narrow alley running alongside the back of a house, common on Victorian and Edwardian terraces. The strip is usually only two or three metres wide, so the gain in floor area is modest, but the gain in usable space is large because it squares off an awkward galley kitchen. Rooflights matter here: filling the side return can darken the middle of the house unless light is designed back in.
What about insulation and energy efficiency?
New extensions have to meet current Building Regulations for thermal performance, which is considerably better than most existing housing. The practical consequence is worth knowing: a well-insulated extension attached to a poorly insulated house can make the older rooms feel colder by comparison, and heating systems sized for the original house may need reassessing. Worth thinking about at design stage rather than discovering in the first winter.
How much glass can we have?
More than people expect, with caveats. Building Regulations limit heat loss across the whole building rather than capping glazing outright, so large openings are achievable if the rest of the fabric compensates. The practical limits are structural — a wide opening needs a bigger steel — and comfort: a fully south-facing glass box overheats in summer unless shading or solar-control glass is designed in.
Get your free extensions quote in Green Lane
Tell us what you are hoping to add and roughly where on the house. We will come and look at the plot, the drains and the access, and tell you what is realistic before anyone pays for drawings.
- No obligation, no pressure, no hidden costs
- Qualified, insured Coventry tradespeople
- Fast response — within 24 hours on urgent jobs