Basement Conversions in Blackheath (38)
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BuilderExtensions / ConversionsDemolitionWall Tie ReplacementsGeneral BuildingWestmidlands Roof Masters in Partnership With Abbeywell Contractors
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(1 review)Operates in Blackheath
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BuilderExtensions / ConversionsEquestrian StableDemolitionBasement / Cellar ConversionsServices & skills
BuilderExtensions / ConversionsFoundationsWorkshop Design / ConstructionAgricultural BuildingServices & skills
BuilderExtensions / ConversionsWarehouse RackingFire and Flood RenovationRefurbishmentsServices & skills
BuilderExtensions / ConversionsNew BuildsDemolitionStructural SteelsServices & skills
BuilderExtensions / ConversionsRefurbishmentsLoft ConversionsBasement / Cellar ConversionsServices & skills
BuilderExtensions / ConversionsStretched CeilingsPeriod Property RestorationDemolition- N
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BuilderExtensions / ConversionsRefurbishmentsProperty Maintenance / RepairGeneral Building Services & skills
BuilderExtensions / ConversionsDemolitionGarage ConversionsLoft ConversionsServices & skills
BuilderExtensions / ConversionsSteel FabricationDemolitionWall Tie Replacements- S
Services & skills
BuilderExtensions / ConversionsGarage ConversionsConcretingLoft Conversions Services & skills
BuilderExtensions / ConversionsStructural Steels
Conversion and extension builders in Blackheath
Planning a loft conversion, garage makeover or full house extension in Blackheath? 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 Blackheath
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 Blackheath
Our checked tradespeople in Blackheath 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
Costs to expect
Costs of extensions and conversions vary depending on size, structure and spec, but here's a rough guide:
Single - storey extensions: £21,000 - £65,000
Double - storey extensions: £55,000 - £95,000
Loft conversions: £35,000 - £65,000
Garage conversions: £8,000 - £20,000
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 Blackheath: 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 Blackheath
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 Blackheath? Enter your postcode or post a job to find emergency services in your area.
Find the right extension or conversion specialist in Blackheath
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 Blackheath?
Find Checkatrade reviewed Tradespeople, get a quote today, discover related services in Blackheath and check out our latest home improvement guides.
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