All Bathroom fittersBath ResurfacingBathroom DesignBathroom InstallationBathroom RepairBathroom TilingComplete Bathroom RefurbishmentWet Room InstallationAll Blacksmith / Metal workersDecorative Ironmongery and MetalworkMetal Kitchen WorktopsMetal StaircasesSecurity FencingSecurity Gates & BollardSecurity GrillWooden / Metal / Wire FencesZinc / Metal RoofAll BricklayersChimney Building / RepairGarden WallPizza OvenPointing / RepointingStonework / Stone CladdingAll BuildersCavity Wall InsulationCellar & Basement ConversionChimney Building / RepairCladdingConservatoryDisability Access InstallationGarage ConversionGarden Office / Studio ConstructionGroundwork / FoundationsHome ImprovementsHouse ExtensionLoft ConversionLog Cabins / Timber Framed BuildingMetal StaircasesMould / Damp ControlPartition WallPeriod / Listed Building WorksPizza OvenPorch / CanopyPost Construction CleaningSteel Fabrication / Structural steelworkSuspended CeilingUnderfloor InsulationUnderpinning / Piling / FoundationsWooden StaircasesAll Carpenter / JoinersBespoke FurnitureBespoke KitchensBuilt-In FurnitureFitted Bedrooms / WardrobesFlat Pack Furniture AssemblyFloor Sanding & FinishingGarden Shed / PlayhouseGeneral Fitted FurnitureHot Tub Installation / RepairLaminate FlooringLog Cabins / Timber Framed BuildingPeriod / Listed Building WorksRadiator CoversSkirting Board InstallationSolid Wood FlooringWood Floor Sanding / StainingWooden Casement WindowWooden Cladding /Fascias/ SoffitsWooden DeckingWooden Doors - ExternalWooden Doors - InternalWooden Sash WindowWooden ShutterWooden StaircasesAll CCTV / Satellites / AlarmsAerial & Satellite Dish InstallationAerial InstallationBurglar, Security & Intruder Alarm InstallationCCTV InstallationDigital Home NetworkFire Alarm InstallationSound & Audio Visual InstallationAll CleanersCarpet CleaningCommercial Window CleaningConservatory Cleaning / MaintenanceDeep Cleaning - CommercialDeep Cleaning - DomesticDomestic House Cleaning: One OffDomestic House Cleaning: RegularEnd of Tenancy CleaningOffice / Commercial CleaningOven CleaningPost Construction CleaningRepeat Wheelie Bin CleanWindow CleaningAll Drainage SpecialistsDrains - Installation / Unblocking / CleaningSeptic Tanks - Installation / Emptying / CleaningAll Driveway paversBrick / Block PavingConcrete DrivewayResin DrivewayTarmac DrivewayAll ElectriciansAccess Control / Door EntryAerial & Satellite Dish InstallationAir Conditioning / RefrigerationCarbon Monoxide Alarms - InstallationDomestic Appliance RepairElectric Car Charging Point InstallationElectric Oven / Hob - InstallationElectric Underfloor HeatingElectrical Inspection Condition ReportElectrical Installation / TestingEmergency ElectricianExternal LightingHot Tub Installation / RepairInternal LightingLandlord Reports / Safety ChecksSmoke Alarm - InstallationAll Floor fittersCarpet FittersElectric Underfloor HeatingExternal TilingFloor Sanding & FinishingFloor TilingLaminate FlooringLinoleum FlooringPlastic / Rubber FlooringPolished ConcreteScreedingSolid Wood FlooringStone / Concrete PavingVinyl FlooringWater Underfloor HeatingWooden DeckingAll Gardener / Landscape gardenersArtifical Grass / Astro TurfBrick / Block PavingGarden ClearanceGarden DesignGarden MaintenanceGarden Shed / PlayhouseGarden WallLandscapingLawn Care Services - Grass Cutting / Turfing / SeedingPlantingPond & Water FeatureRepeat Garden MaintenanceSoil Irrigation / DrainageStone / Concrete PavingTree Surgery / ConsultancyWooden / Metal / Wire FencesWooden / Metal GatesWooden DeckingAll Gas / Heating engineersElectric Boiler - InstallationElectric Boiler - RepairElectric Boiler - ServiceGas Boiler - InstallationGas Boiler - RepairGas Boiler - ServiceGas Cooker / Hob - InstallationGas Cooker / Hob - RepairGas FireHeat Pump (Air source/ Ground Source)Hot Water Tank/Appliance Tank ThermostatsOil-Fired BoilerRadiatorSolar Panel InstallationWater Underfloor HeatingAll HandypersonsBlind / Curtain / Shutter - InstallationCat Flap - InstallationDomestic Appliance RepairElectric Oven / Hob - InstallationFlat Pack Furniture AssemblyHome Maintenance / RepairJet / Power WashingPerspex / Protective ScreensSkirting Board InstallationAll Kitchen SpecialistsBespoke KitchensComplete Kitchen RefurbishmentFitted KitchensKitchen Design / InstallationKitchen TilingKitchen Worktops - StoneLaminate / Wooden Kitchen WorktopsMetal Kitchen WorktopsAll LocksmithsBurglar RepairsDoor OpeningDoor ReplacementEmergency / 24 Hour LocksmithLock Fitting / RepairAll Loft Conversion SpecialistsHome ImprovementsLoft ConversionMetal StaircasesVelux / Skylight WindowWooden StaircasesAll Painter and decoratorsDoor / Window PaintingExternal Wall PaintingInternal Painting & DecoratingMould / Damp ControlWall Murals / Paint EffectsAll Pest ControlersCommercial Pest ControlResidential Pest ControlAll Plasterer / RenderersDecorative Cornicing / PlasterworkDry Lining & Plasterboard - InstallationDry Lining & Plasterboard - RepairExternal RenderingExternal Wall InsulationInternal RenderingPebble DashingPlaster SkimmingPolished / Other Plaster FinishScreedingStandard CovingAll PlumbersBathroom InstallationBathroom, Kitchen and WC PlumbingEmergency / 24 Hour PlumberGuttering and Rainwater PipeHot Tub Installation / RepairPlumbing Repair & MaintenancePower Showers and PumpRadiatorSolar Panel InstallationSprinkler SystemWater Tanks and Immersion HeaterWater Underfloor HeatingAll Removal ServicesHouse ClearanceHouse RemovalsMan/Woman with a VanSpecialist RemovalsStorageWaste RemovalAll Renewable Energy SpecialistsElectric Car Charging Point InstallationHeat Pump (Air source/ Ground Source)Solar Panel Cleaning & RepairSolar Panel InstallationAll RoofersChimney Building / RepairFlat Roof - Installation / RepairGuttering and Rainwater PipeLeadworkRoof CleaningRoof InsulationSlate & Tiled RoofThatched RoofuPVC Fascias / Soffits / CladdingVelux / Skylight WindowWooden Cladding /Fascias/ SoffitsZinc / Metal RoofAll Security systems / AlarmsAccess Control / Door EntryBurglar, Security & Intruder Alarm InstallationCCTV InstallationFire Alarm InstallationGarage Doors - Installation / RepairLock Fitting / RepairRoller Shutters - Installation / RepairSecurity FencingSecurity Gates & BollardSecurity GrillAll Specialist TradespersonsAerial & Satellite Dish InstallationAir Conditioning / RefrigerationBrick / Block PavingBrick & Stone CleaningCellar & Basement ConversionDamp ProofingDemolitionDigital Home NetworkDisabled Access / Mobility ServiceFireplaceScaffoldingSound & Audio Visual InstallationSound ProofingStored GasStored OilThermal InsulationTimber Preservation, Woodworm & RotWaste RemovalWater Underfloor HeatingWhole Internal RefurbishmentAll Stoneworker / StonemasonsBrick & Stone CleaningFireplaceGarden WallKitchen Worktops - StoneLandscapingPolished ConcreteStone / Concrete PavingStonework / Stone CladdingAll Swimming Pool SpecialistsSwimming Pool DesignSwimming Pool InstallationSwimming Pool MaintenanceAll TilersExternal TilingFloor TilingWall TilingAll Traditional CraftspersonsBespoke FurnitureDecorative Cornicing / PlasterworkDecorative GlazingDecorative Ironmongery and MetalworkFireplacePeriod RestorationStonework / Stone CladdingThatched RoofWall Murals / Paint EffectsWooden Doors - InternalWooden ShutterAll Tree SurgeonsCrown ReductionCrown ThinningStump GrindingTree FellingTree Surgery / ConsultancyAll Window fitter / Conservatory installersConservatoryConservatory Cleaning / MaintenanceDecorative GlazingPerspex / Protective ScreensSingle / Double GlazinguPVC Windows & DoorVelux / Skylight WindowWooden Casement WindowWooden Doors - ExternalWooden Sash WindowAsk a tradespersonCost guidesHomeowner advice centreInspiration centreTrade advice centreTrends reportLondonBerkshireBuckinghamshireEast SussexHampshireIsle of WightKentOxfordshireSurreyWest SussexBristolCornwallDevonDorsetGloucestershireSomersetWiltshireBedfordshireCambridgeshireEssexHertfordshireNorfolkSuffolkHerefordshireShropshireStaffordshireWarwickshireWest MidlandsWorcestershireDerbyshireLeicestershireLincolnshireNorthamptonshireNottinghamshireRutlandEast Riding of YorkshireNorth YorkshireSouth YorkshireWest YorkshireCheshireCumbriaGreater ManchesterLancashireMerseysideDurhamNorthumberlandTyne & WearClwydGwyneddGwentMid GlamorganSouth GlamorganDyfedWest GlamorganPowysAyrshire and ArranBerwickshireCity of EdinburghDumfriesDunbartonshireLanarkshireMidlothianRenfrewshireRoxburgh- Ettrick and LauderdaleThe Stewartry of KirkcudbrightTweeddaleWigtownAberdeenshireAngusCity of DundeeCity of GlasgowClackmannanEast LothianFifePerth and KinrossStirling and FalkirkWest LothianArgyll and ButeBanffshireCaithnessCity of AberdeenInvernessKincardineshireMorayNairnOrkneyRoss and CromartyShetlandSutherlandWestern IslesAntrimArmaghDownFermanaghLondonderryTyrone

The quick way to find a local Cellar & Basement Conversion specialist in Knebworth

Post your job for free. Get quotes. Read reviews.

Over 10,000 rated tradespeople
are ready to help you get your job done

Over 3 million happy homeowners
have found a quality tradesperson

Over 1 million ratings
with 88,000 5* ratings in the last 12 months

Join our group of happy customers

Thousands of homeowners, thousands of success stories

Thousands of 5 star reviews

Read real reviews from customers about their service experiences.

Craig got in touch quickly, gave me a rough estimate over the phone and answered all my questions. Surveyor arrived on time, gave instant quote. Price was good. Michael and (another) Craig turned up to do the job on the day, time given. Good, tidy job. Can't fault anything, from start to finish!! Would recommend!

Mary

George and his team are experienced builders, replaced my front door with a custom frame/sidelights and raising the floor level in the hallway quite quickly - in fact, they were the only who came next day, gave a quote straightaway and were ready to start in just couple of days. They also had all the necessary tools and materials, were ready to buy something additional quickly on the day - if further adjustments were required to fit everything as I asked. Thanks a lot for your help, guys!

Dmitry

Highly recommend. These guys did a fantastic job of constructing our pergola and decking. Very hardworking and reliable. The job was completed in the time frame agreed and to a very high standard. We would 100% use them again.

Holly

Browse Cellar & Basement Conversion specialists

Take a look at our Cellar & Basement Conversion specialists profiles, read reviews and request quotes directly.

We are a fully insured roofing company with over 20 years experience, we offer a high standard of tradesmanship to our customers we do all roofing and guttering etc no job too big or small.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Eddie on 20/2/2024

Simple job refitted plastic guttering job completed promptly reasonable charge

I have been doing building work now for the last 15 years I cover all types of building work to extensions, alterations conservatories, Landscapeing renovation, Plastering I enjoy doing different types of projects including the awkward stuff if your interested in any work being done please let me know I am happy to take a look and talk you through the jobs and different ideas Many thanks Andrew wall Asw Builder

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Alex on 1/1/2026

Excellent build quality, transparency and communication.

Bilaniuk avatar

Bilaniuk

Cellar & Basement Conversion

We are a team of professional dryliners with over 10 years of experience in construction and interior finishing. Our specialties include suspended ceilings, drywall installation, partitions, and high-quality finishing work. We take pride in delivering precise, reliable, and efficient results on every project. With hands-on training and years of practice on residential and commercial sites, we can handle jobs of any size with attention to detail and a strong work ethic.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Charly on 7/7/2026
Ionut Covaci avatar

Ionut Covaci

Cellar & Basement Conversion

“Versatile and detail-orientated” are words that have been used to describe us! With over 9 years experience of delivering outstandingly presented rooms for residential and commercial clients. A knowledgeable professional with expertise in fulfilling decorative needs for contractual clients and working on-site to provide all maintenance needs for commercial locations. Adept at executing high standards of painting and decorating through applying exemplary wall coverings knowledge and ensuring all surfaces are perfectly smooth through effective plastering and filling. Most importantly, customer-focused and committed to delivering all aspects of the customer brief.

Our team of building professionals offers a solution for all of your building related needs. Whether its kitchen or bathroom installation or even something much smaller, we have the experience & personnel to provide the highest quality work.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Laura on 2/10/2020

Stanley & his team originally came on board to build us a new rear extension which would house our kitchen as well as fit a new bathroom but as the project developed it ended up being near enough an entire house renovation and we're thrilled with the results. We still have work we would like to do to the outside of the house as well as a loft conversion and when we have enough money to take on those projects, we would definitely re-hire Stanley and his team. Highly recommend Stanley & his team.

I have a very good experience for last 20 years in all the kind off building works I can be able to fix and identify the needs and work to bet done In a safe way Paint and decorating Tallying Wood Flooring

We are a well established Building company with over 20 years experience in the building trade. We build everything from New Homes, extensions, alterations and renovations.

Masons Group Ltd provides extensive professional building services, specialising in roofing, leadwork, carpentry, structural welding, kitchens, bathrooms, extensions and complete property refurbishments. We combine skilled craftsmanship with quality materials to deliver durable, high-standard results on every project. From minor repairs to major construction works, we offer a reliable, honest and professional service from start to finish, with a strong focus on quality, safety and customer satisfaction.

Aspray (Luton) avatar

Aspray (Luton)

Cellar & Basement Conversion

I take care of managing your property damage insurance claim so you can carry on with everyday life or running your business. Your home is your sanctuary. Fire, flood, water damage, storms, impact or criminal damage can threaten that. If the worst happens, I can negotiate a fair settlement from your insurer and then return your property to its original condition. There is no charge to policyholders for the Aspray service provided Aspray can appoint and project manage the contractors who carry out the repair works, as Aspray is paid by the insurance company for any repair or reinstatement works they complete. Please note, any excess stated within your policy wording, will still apply.In the event you need to make a claim, wouldn’t you rather have one point of contact looking after your interests rather than dealing with various different parties? If you are a business owner, offering Aspray’s service to your clients could enhance your chance to gain new customers, retain existing customers and add an extra income stream to your business whilst giving you an edge over your competitors. Aspray (Luton) is a trading name of (Maynard’s Property Services). Aspray Limited is authorised and regulated by the Financial Conduct Authority

We are a construction company that provides all aspects of building works from house extensions to simple electrics. We work within Herts, Beds and Bucks and are based in letchworth . I am a fully qualified NIC electrician and have 15 years experience in construction.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Rebecca on 21/10/2020

We were hugely impressed by Courtney and his team. Everything came out on budget, and they were fast, reliable, and left the house clean and in order each day. Very nice people to work with, and can't recommend them highly enough. We are using his team again for an additional extension.

Skilled groundworker with over 25 years of varied experience, including block paving and drainage work.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Carolyn on 6/11/2012

I would recommend Andy. He spent time evaluating the job required with a view to looking at less costly but effective options. Most of the time I was out at work, he called everyday when he was leaving to update me on progress. He communicated clearly and so there was no confusion with what the job involved and the final cost. He was also very nice to my dog. Thanks Andy.

Onstruction Ltd avatar

Onstruction Ltd

Cellar & Basement Conversion

AJD Builders avatar

AJD Builders

Cellar & Basement Conversion

I've around 15 years experience having established my business 10years ago. Customer satisfaction is very important to me and excellent customer service is at the heart of my business.

Robeco 2010 Ltd : Rendering,Plastering , Tiling, Drylining,Drywall &Insulation -Residential -Commercial ,Extensions,Loft Conversations

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by George on 22/11/2017

Rob and his team did a really high quality job and we are very pleased with the end result (and I am the son of a builder, so my expectations were high to start with).. The finish is excellent on the render and the quality is constant through what was a fairly large rendering job on my detached house. The team were tidy and worked hard to the deadline throughout the process. If you need a high quality rendering job, then I would highly recommending considering Rob's services.

Curve Management Services Ltd offers a service designed specifically to its customers requirements. Our services include leak detection, leak repairs, damp investigations, building envelope surveys and property drying. Our experienced technicians undertake all work. Our comprehensive building knowledge and unmatched experience in our field of expertise allows us to complete any job from start to finish. Our team of skilled technicians undertake work under the guidance of our experienced project managers. We can undertake private and insurance work via our in-house insurance claim specialist.

We are specialised in Kitchen, bathrooms and all type of furniture instalation. We are team of handyman, plumer, electrician and carpenter.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by sofia on 22/11/2024

Excellent Kitchen Tiling! Peter did an amazing job! Professional, friendly, and efficient, he completed the work quickly. The pricing was fair, and he kept everything clean throughout. Highly recommend for quality tiling!

Unico avatar

Unico

Cellar & Basement Conversion

Whether for commercial or domestic projects, we provide a friendly and professional service that includes all aspects of design, planning, construction, building repair and maintenance. With extensive experience in the construction industry, our team of fully qualified tradesmen guarantees a high standard of workmanship. We are completely committed to every project we undertake and all are properly managed to keep writhing budget and in schedule. We are punctual, reliable, tidy and and the good relationships we build with customers means a high level of repeat business and recommendations. Facebook & Instagram unico develop

Latest homeowner review
full starfull starfull starfull star
Reviewed by Paul on 3/11/2022

Too Inexperienced

As a committed and multifaceted professional, my journey has spanned both the vibrant world of hospitality and the demanding field of construction, enriched by my academic progression from a BSc Level 5 towards a Level 6 qualification. My career began amidst the buzz of a Michelin-starred eatery, where I quickly mastered the art of stellar customer service and seamless teamwork, evolving from an eager Commis Waiter to a proficient Waiter. With the onset of the COVID-19 pandemic, I pivoted to the construction realm, starting as a General Labourer. My dedication to growth led me to acquire essential certifications like SSSTS, NVQ Level 2, and First Aid Level 3, paving my path to becoming a Drylining Fixer. Presently, I apply my broad skill set as a Maintenance Handyman, focusing on the meticulous care and repair of properties to uphold their functionality and appeal. Renowned for my relentless work ethic, flexible nature, and meticulous attention to detail, I thrive in settings that demand ingenious problem-solving and clear communication.

My names Tom, I have been in the real estate sector for over 10 years and have done everything from general property maintenance, new bathrooms, painting/decorating, demolition contracts and most recently constructed 9 ultra high spec homes. High quality and impeccable workmanship are key values to me and ensuring the client is satisfied and more, with the work they are receiving. I am very well connected with all trades and can provide a top tier service for all types of project management no matter how big or small the job may be. I am also extremely capable at doing many manual labour jobs, but often favour a shorter timeline for my clients project completion and therefore prefer to draft in experienced trades to get the job completed. Above all I am very friendly, well spoken and always keen to deliver what is asked of me.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by John on 18/2/2026

Post your job for free

app-icon

Get our app for homeowners

  • Send messages and get notifications from tradespeople
  • Add photos to get more accurate quotes
  • View tradespeople's profiles