Extensions in Coundon
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 Coundon
- Fully insured
- Free fixed quotes

Property Maintenance Coventry builds home extensions in Coundon: single-storey rear, side return, wrap-around and two-storey. Groundworks and foundations, structural steel to engineer calculations, roof, glazing and full fit-out, with Building Control involved throughout. Survey first, then a fixed written quote and a programme.
Working in Coundon
Coundon lies 1.4 miles north-west of Coventry city centre, in the CV6 postcode district.
Within walking distance you will find Christ The King RC Infant School and Christ The King, and we work on properties throughout the streets around them.
The nearest areas we also cover are Radford (0.8 miles) and Bishopsgate Green (1.1 miles), so work in Coundon sits inside the same run of the city.
- Christ The King RC Infant School
- Christ The King
- Costcutter
- Christ The King Catholic Primary School
- Radford Common
- St George's Church
- Foundations are the biggest unknown in the budget, and the depth is set by the ground, not the design.
- A drain within three metres of the footprint usually means a build-over agreement with the water authority.
- A rear extension of 4m detached or 3m semi/terraced is generally permitted development, subject to conditions.
- Permitted development never removes the need for Building Regulations approval.
- A lawful development certificate is the document that answers a buyer's solicitor years later.
The work itself, in plain terms
The extension work we take on across Coundon (CV6), from a single-storey rear to a full two-storey build.
Single storey rear extensions
Rear extensions from foundations to finished room, with the light to the existing house designed in rather than lost.
Two storey extensions
Two-storey builds from foundations up, including the bedroom-level disruption planned around realistically.
Side returns & side extensions
Side return infill on Victorian and Edwardian terraces, squaring off an awkward galley kitchen.
Planning & Building Control
We establish early whether the project is permitted development or needs an application, and build the approvals into the programme.
Groundworks & structure
Groundworks and structural work, including the trial holes and trees check that set foundation depth honestly.
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
Room to grow in the house you already have, costed against what moving would actually take.
Open-plan projects
Rear builds combined with removing the original back wall, which is where the transformation actually comes from.
Investors
Extensions costed against the realistic ceiling value for the street, not for the postcode in general.
The jobs that start with a phone call
- 01
Foundations priced at an assumed depth, with no rate agreed for what happens if it has to go deeper.
- 02
A party wall notice served too late, holding up a start date that had already been booked.
- 03
An extension that leaves the original back room dark, because all the glazing went in the new rear wall.
- 04
A large tree close to the build on clay soil, which changes the foundation depth and sometimes the design.
- 05
A build-over agreement discovered at trench stage rather than at design stage.
- 06
A kitchen-diner planned with no structural allowance for taking the existing rear wall out.
What we check on a property in Coundon
Every quote starts with a survey. These are the things we look at on extension work in Coundon, and why each one changes the recommendation.
Neighbour considerations
Shared drives, overhanging trees, fence ownership and where a neighbour parks all affect the build. A conversation at survey stage prevents most of the disputes we have seen.
Glazing orientation and overheating
A large glazed elevation facing south behaves very differently from one facing north. We raise shading and glass specification at design stage rather than after the first summer.
Contingency and what could move the price
We say plainly which parts of the quote are firm and which depend on what we find — usually foundations and the existing structure — so the contingency is a planned figure rather than a shock.
Existing foundations
Where the new structure ties into the old, we need to know what the existing foundations are. Trial holes are sometimes the only honest way to find out.
Protecting the rest of the house
We plan dust screens, floor protection and the route in and out before starting. Living through a build is tolerable if the mess is contained to where the work is.
Ground conditions and trees
Soil type and nearby trees drive foundation depth more than anything else. We look at what is growing within influencing distance before anyone commits to a groundworks figure.
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 Coundon — your questions answered
Still have a question? Our local team is happy to help — no pressure, no jargon.
Speak to us today0786 5778332Which areas near Coundon do you also cover?
The closest are Radford (about 0.8 miles away), Bishopsgate Green (about 1.1 miles away), Spon End (about 1.2 miles away) and Allesley (about 1.2 miles away). All of them are inside our normal working area, so a property on the boundary is no different to one in the middle of Coundon. If you are unsure which area you count as, the postcode settles it.
Which part of Coundon do you cover?
All of it — the streets around Christ The King RC Infant School included. Where a property sits matters less to us than what the access is like, which is something we look at on the survey rather than guessing from an address.
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.
What are the most common mistakes people make?
Three come up repeatedly. Designing for floor area rather than for light, so the middle of the house ends up dark. Leaving the kitchen and electrical layout until the shell is up, which means compromises in positions that were free to decide earlier. And setting a budget with no contingency — ground conditions and existing-structure surprises are normal, not exceptional, and ten to fifteen per cent held back prevents a stalled project.
How long does an extension take to build?
A straightforward single-storey rear extension is typically somewhere around three to four months on site; a two-storey is longer. The part people underestimate is everything before that: design, structural calculations, planning if needed, Building Control and lead times on glazing and steel can easily add as long again. We give a programme that includes those stages because a build-only timescale is not a date you can plan around.
Do I need a structural engineer?
Yes, for anything involving a beam, an opening in a load-bearing wall, or unusual foundations — which is nearly every extension. The engineer sizes the steel and specifies the bearings and padstones, and Building Control want to see those calculations. It is a modest cost relative to the build and it is not an area where experience substitutes for arithmetic.
Get your free extensions quote in Coundon
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
