South Wales · Cardiff · 30+ Years Combined Experience
Builders In Cardiff.
Extensions, Renovations,
Silicone Render — Built Properly.
From Pontcanna and Roath terraces to Cyncoed semis and Pontprennau new-builds — one team handling extensions, full renovations, bricklaying and silicone render across Cardiff. Written quote typically within 48 hours.
Cardiff site surveys booked this week · Written quotes typically within 48 hours
Local Relevance · Cardiff
A Cardiff Builder,
Not A Builder Who Visits Cardiff.
Why We Work In Cardiff
Cardiff is a regular working area for us — Pontypridd to Cardiff city centre is under 25 minutes up the A470, and most of the Cardiff suburbs are inside 30. We've worked across the city's full property mix: Victorian terraces in Roath and Cathays, the bigger Pontcanna and Llandaff stock, post-war semis in Whitchurch and Rhiwbina, and the newer estates around Pontprennau, St Mellons and Cardiff Bay.
Cardiff Property Types We Know
Cardiff's housing splits into a few distinct types and each demands different detailing. The Pontcanna / Roath / Cathays Victorian bay-fronted terraces typically need sympathetic extensions over the original outrigger, often with retained character features. The Llandaff and Cyncoed detached and semi-detached stock takes larger wrap-around and two-storey extensions. The Cardiff Bay and Pontprennau new-build estates run on modern cavity construction with their own quirks around insulation continuity and steel sizing.
Common Briefs In Cardiff
The Cardiff brief we price most often is a kitchen-diner extension across the rear of a terrace, with bi-fold or sliding doors opening to the garden, plus a loft conversion or full first-floor reconfiguration. Silicone render systems on the Whitchurch and Heath semis are another regular call — we've replaced a lot of tired pebbledash across the northern suburbs.
Driving Time To Cardiff
Pontypridd to Cardiff city centre is around 20–25 minutes via the A470 outside rush hour. We schedule Cardiff surveys early morning or late afternoon to dodge the worst of it, which means we can fit Cardiff visits around the same days we're booked in Pontypridd or Caerphilly.
Services In Cardiff
What We Build
In Cardiff.
Extensions & New Builds
Single-storey, two-storey, wrap-around extensions and ground-up new builds across Pontypridd, Cardiff and the South Wales valleys.
Read Service BriefWhole-House Refurbishments
Top-to-bottom refurbishments for whole properties across Pontypridd, Cardiff and South Wales. Plaster off, floors up, rewire, replumb, reinsulate, replaster, redecorate, kitchen and bathrooms in. One team, one written programme.
Read Service BriefPlastering
Internal skim, re-skim and full replastering across Pontypridd, Cardiff and South Wales.
Read Service BriefSilicone Render
Full silicone and silicone-silicate render systems across Pontypridd, Cardiff and South Wales.
Read Service BriefLoft & Attic Conversions
Full loft and attic conversions across Pontypridd, Cardiff and South Wales.
Read Service BriefMedia Walls
Bespoke media wall builds with recessed TV mounting, integrated electric fire, hidden cabling and the finish of your choice.
Read Service BriefBricklaying
Time-served bricklaying across Pontypridd, Cardiff and the South Wales valleys.
Read Service BriefEnd-to-End Builds
Single accountable team handling every trade.
Read Service BriefWhy Choose Us In Cardiff
Trust Built
On The Ground.
25 min
From our Pontypridd yard
48 hrs
Written quote turnaround
30+ yrs
Combined experience across South Wales
CF15-CF24
Postcodes worked weekly
What's Specific To Cardiff
Local Problems,
Local Answers.
Property type, climate, building age and infrastructure all behave differently in Cardiff. Generic builders don't account for it. We do.
Tight Side Returns On Terraces
Pontcanna, Roath and Cathays terraces typically have very narrow side returns — getting a digger in for foundation work is the first hurdle on every extension here. We plan access early and use mini-excavators where width is critical.
Party Wall Agreements
Most Cardiff extension work touches a party wall. We coordinate with appointed party wall surveyors and programme our work around the agreed access conditions — saves the dispute that derails so many city extensions.
Heritage Bay Window Detail
The original Cardiff Victorian bay windows are part of what makes the houses worth what they are. We retain, repair and match rather than rip out, and we work in lime mortars where the original detail demands it.
Render Failure On 60s–80s Stock
Whitchurch, Heath, Rhiwbina and Llanishen have a lot of post-war semis with sand-and-cement render that's cracking and blowing. A silicone render system over a sound, prepped substrate solves it for the next 25 years without the constant repainting cycle.
Coastal-Influenced Damp
Cardiff's lower elevation and proximity to the Bristol Channel mean wind-driven rain is harsher here than further up the valleys. Detailing around copings, sills and weatherings has to be tight or you'll see staining within a year.
How It Works
First Call
To Final Sign-Off.
01
Enquiry
Tell us the brief by phone, email or form.
02
On-Site Survey
We come out, measure up and listen properly.
03
Written Quote
Itemised quote with a clear programme — typically within 48 hours of the survey.
04
Build & Sign-Off
On site daily, tidy at end of day, signed off when you're happy.
Cardiff Questions
Straight
Answers.
Cost, response time, coverage, emergency availability — the Cardiff questions everyone asks, answered before you call.
Ask Yours
Do you cover all Cardiff postcodes?
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Yes — CF1 through CF24 (city and inner suburbs) plus CF14, CF23 and the outer northern and eastern suburbs. Anywhere within Cardiff itself we work as a normal travel area.
How long does it take you to reach a Cardiff job from Pontypridd?
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20–25 minutes outside peak traffic via the A470. We schedule Cardiff surveys around traffic windows so we're not wasting your time or ours sitting in queues.
Are you experienced with Cardiff Victorian terraces?
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Yes — Pontcanna, Roath, Cathays, Canton, Riverside. We've done rear extensions, loft conversions, full house renovations and silicone render across the city's period stock.
Do you handle Cardiff Council building control?
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Yes — we book and host inspections at every required stage and hand you the completion paperwork at sign-off. Standard part of every extension or structural job.
Can you do work in Cardiff Bay or the newer estates?
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Yes — modern cavity-construction extensions, loft conversions, internal reconfigurations and media walls. The newer Bay and Pontprennau properties have their own detailing requirements and we're set up for them.
Do I need planning permission for an extension in Cardiff?
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Many single-storey rear extensions fall under permitted development, but conservation areas and listed properties almost always need consent. We'll tell you on the first visit which route applies.
How much does a single-storey rear extension cost in Cardiff?
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Cost depends on size, finish and ground conditions. We give itemised fixed quotes after a site visit so you can see exactly what each element costs. No vague day rates.
Can you take on full house renovations in Cardiff?
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Yes — full strip, rewire, replumb, insulation, plaster, kitchen, bathrooms, decoration. One team end to end. Particularly suited to recently-bought properties before you move in.
Do you work in Cardiff conservation areas?
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Yes — and we work to the materials and methods the conservation officer requires. Lime mortars, matched stone and brick, breathable finishes.
Nearby Service Areas
We Also Work In…
Next Step · Cardiff
Cardiff Job? Get A Local Builder Who Travels.
Free site survey across Cardiff (within our coverage area), written quote typically within 48 hours, no obligation. 30+ years' combined trade experience across the team, public liability insured, Pontypridd-based.