Add the postcode for your project so the results are accurate (you'll need to do this later anyway!)
Extensions / Conversions in PO1 (80)
Search results
Describe your job
Give us the details of your job and we'll send it to specialist trades for you
Describe your job
Receive multiple quotes for your job from reviewed and trusted tradespeople
Services & skills
BuilderExtensions / ConversionsStructural DesignSteel FabricationConcrete GaragesServices & skills
BuilderExtensions / ConversionsRefurbishmentsGarage ConversionsSuspended CeilingsServices & skills
BuilderExtensions / ConversionsEmergency Builder ServiceGarage ConversionsWorkshop Design / ConstructionServices & skills
BuilderExtensions / ConversionsPartition WallsBrick / Concrete Structural RepairsCladdingServices & skills
BuilderExtensions / ConversionsGeneral BuildingBasement / Cellar ConversionsRefurbishmentsServices & skills
BuilderExtensions / ConversionsFire and Flood RenovationCar PortsGarage ConversionsServices & skills
BuilderExtensions / ConversionsGeneral BuildingTree HousesEmergency Builder ServiceServices & skills
BuilderExtensions / ConversionsBasement / Cellar ConversionsFire and Flood RenovationPartition WallsServices & skills
BuilderExtensions / ConversionsWall Tie ReplacementsBasement / Cellar ConversionsCore DrillingServices & skills
BuilderExtensions / ConversionsInsurance Claim SpecialistGarage ConversionsNew BuildsServices & skills
BuilderExtensions / ConversionsDemolitionFoundationsGarage Conversions- B
Services & skills
BuilderExtensions / ConversionsBuilding MerchantsProject ManagementLoft Conversions
Conversion and extension builders in PO1
Planning a loft conversion, garage makeover or full house extension in PO1? You’re in the right place. Whether you’re adding space for a growing family, upgrading your layout or increasing your home’s value, we can help you find the right tradesperson for the job.
Find extension and conversion builders in PO1
Every builder on Checkatrade passes up to 12 checks before they appear in your search. You can read verified reviews, compare services, and even post your job to get quotes straight to your inbox, all in a few clicks. That’s how we help homeowners like you get a job done right.
What to expect from hiring an extension or conversion builder in PO1
Our checked tradespeople in PO1 cover a wide range of projects, including:
Single or double-storey house extensions
Kitchen and diner extensions
Loft, attic, garage or basement conversions
Garden room extensions
Utility room extensions
Over-garage extensions and side returns
Extension and conversion build costs in PO1
Costs of extensions and conversions vary depending on size, structure and spec, but here's a rough guide:
Extensions:
£36363 on average, with prices typically starting at £21034 up to £60872.
Loft conversions:
£37346 on average, with prices typically starting at £23540 up to £58094.
Garage conversions:
£11075 on average, with prices typically starting at £7322 up to £16880.
Conservatory roof conversions:
£7981 on average, with prices typically starting at £5308 up to £11927.
Need help calculating costs? Use our Job Value Estimator Tool for a bespoke cost estimate.
What to check before you hire:
- Are drawings or planning permissions needed?
- Are they familiar with building regs?
- Is the quote fixed or flexible?
- Does it cover materials and project management?
Most builders will include prep, construction, electrics, plumbing and final finishes in their quote, but always double-check. Timelines range from a few weeks for simple jobs to several months for bigger builds.
Extension and conversion builders in PO1: Homeowners vs renters
Homeowners:
You’re in charge of the project. That means hiring the builder, securing permissions, and paying for the work. You may need:
Planning permission (especially for double-storey builds or changes near boundaries)
Drawings from an architect or structural engineer
Building regs approval
If you’re not sure where to start, speak to a local builder or post your job to get help with the process.
Renters:
You’ll usually need your landlord’s approval to make any big changes. In most cases, your landlord will be the one arranging and paying for structural changes like loft conversions or extensions. That said, it’s worth flagging ideas if you think they’ll improve the property, especially if it means longer tenancies or fewer repairs.
Emergency extension or conversion help in PO1
Extensions and conversions are big projects, but sometimes, things go wrong and need sorting fast. Common urgent issues include:
Leaks in newly converted lofts
Structural cracks or shifting
Faulty electrics or plumbing in newly added rooms
Incomplete work by previous builders
Facing an emergency in PO1? Enter your postcode or post a job to find emergency services in your area.
Find the right extension or conversion specialist in PO1
Looking for a builder to help with:
- Rear house extensions
- Kitchen extensions
- Garage conversions
- Loft or attic conversions
- Garden room builds
- Basement or cellar conversions
- Conservatory roof upgrades
- Utility or porch extensions
Looking for more tradespeople in PO1?
Find Checkatrade reviewed Tradespeople, get a quote today, discover related services in PO1 and check out our latest home improvement guides.
- Builder in PO1
- Wall Tie Replacements in PO1
- Brick Concrete Structural Repairs in PO1
- Concreting in PO1
- General Building in PO1
- New Builds in PO1
- Fire And Flood Renovation in PO1
- Partition Walls in PO1
- Agricultural Building in PO1
- Basement Cellar Conversions in PO1
- Loft Conversions in PO1
- Period Property Restoration in PO1
- Washing Machine Repair in Po1
- Bathroom Mastic Sealant in Po1
- Builder in Po1
- Cleaning Services in Po1
- Driveway Cleaning Patio Cleaning in Po1
- Emergency Appliance Services Repair Service in Po1
- Felt Roofing Repair in Po1
- Gutter Repair in Po1
- It And Consultancy in Po1
- Roofer in Po1
- Water Leak Detection in Po1
- Gas Boiler Servicing Repair in Po1
- Extensions / Conversions in London
- Extensions / Conversions in Birmingham
- Extensions / Conversions in Newcastle Upon Tyne
- Extensions / Conversions in Bristol
- Extensions / Conversions in Leeds
- Extensions / Conversions in Nottingham
- Extensions / Conversions in Greater Manchester
- Extensions / Conversions in Glasgow
- Extensions / Conversions in Sheffield
- Extensions / Conversions in Liverpool
- Extensions / Conversions in Wirral
- Extensions / Conversions in Coventry
- Washing Machine Repair in Po1
- Bathroom Mastic Sealant in Po1
- Builder in Po1
- Cleaning Services in Po1
- Driveway Cleaning Patio Cleaning in Po1
- Emergency Appliance Services Repair Service in Po1
- Felt Roofing Repair in Po1
- Gutter Repair in Po1
- It And Consultancy in Po1
- Roofer in Po1
- Water Leak Detection in Po1
- Gas Boiler Servicing Repair in Po1
- Extensions / Conversions in London
- Extensions / Conversions in Birmingham
- Extensions / Conversions in Newcastle Upon Tyne
- Extensions / Conversions in Bristol
- Extensions / Conversions in Leeds
- Extensions / Conversions in Nottingham
- Extensions / Conversions in Greater Manchester
- Extensions / Conversions in Glasgow
- Extensions / Conversions in Sheffield
- Extensions / Conversions in Liverpool
- Extensions / Conversions in Wirral
- Extensions / Conversions in Coventry