Home Improvement Costs in Welwyn Garden City
Find local prices for 114 services in Hertfordshire, East of England.
Regional cost multiplier: 1.25x UK average
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Bathroom
New Bathroom Installation
Complete bathroom design, supply and installation
From £5,630En-Suite Installation
En-suite bathroom creation or renovation
From £4,380Wet Room Installation
Fully tanked wet room with level-access shower
From £7,500Shower Room Installation
Dedicated shower room with WC and basin
From £3,750Cloakroom Installation
Downstairs WC and basin installation
From £2,250Conversions
Loft Conversion
Converting loft space into habitable room(s)
From £31,250Dormer Loft Conversion
Loft conversion with dormer window extension
From £43,750Garage Conversion
Converting garage into habitable living space
From £10,000Basement Conversion
Converting cellar or basement into living space
From £50,000Barn Conversion
Converting agricultural barn into residential property
From £100,000Driveways
Block Paving Driveway
Block paved driveway with proper sub-base
From £4,380Resin Bound Driveway
Permeable resin bound gravel driveway
From £5,000Tarmac Driveway
Machine-laid tarmacadam driveway
From £2,500Gravel Driveway
Gravel driveway with optional grid system
From £1,880Concrete Driveway
Poured concrete driveway with finish options
From £3,750Imprinted Concrete Driveway
Decorative stamped concrete with pattern and colour
From £5,000Driveway Resurfacing
Resurfacing existing driveway without full replacement
From £1,880Dropped Kerb Installation
Vehicle crossover and dropped kerb for driveway access
From £1,000Electrical
Full House Rewire
Complete electrical rewire with new consumer unit
From £5,000Consumer Unit Upgrade
Modern RCD consumer unit replacement
From £500Electrical Installation Condition Report
Comprehensive electrical safety inspection and report
From £190EV Charger Installation
Professional electric vehicle charging point installation
From £1,000Additional Sockets Installation
Additional power sockets with neat cable routing
From £130Outdoor Electrical Installation
External power supply for garden, shed or outbuilding
From £500Home Automation Installation
Smart home system including lighting, heating and security
From £1,880Extensions
Single Storey Extension
Ground floor extension to increase living space
From £31,250Double Storey Extension
Two-storey extension for significant space increase
From £56,250Rear Extension
Extension at the rear of the property
From £25,000Side Return Extension
Infill extension along side passage of property
From £18,750Wrap Around Extension
L-shaped extension combining rear and side return
From £43,750Conservatory Installation
Full conservatory design, supply and installation
From £10,000Orangery Installation
Premium orangery with solid roof perimeter and lantern
From £25,000Home Office Pod
Dedicated garden office space for remote working
From £10,000External
External Wall Insulation
EWI system with render finish for improved thermal efficiency
From £10,000Rendering
External wall rendering with modern finish options
From £3,750Repointing
Brick repointing to restore mortar joints
From £1,880Cladding Installation
External cladding in timber, composite or other materials
From £6,250Exterior Painting
Full exterior redecoration including walls and woodwork
From £2,500Pointing and Brickwork Repair
Brick replacement and mortar repair
From £1,000Outbuildings
Garage Construction
New detached or attached garage construction
From £15,000Shed Installation
Quality garden shed supply and installation
From £1,000Workshop Construction
Insulated workshop building for hobby or work use
From £10,000Carport Installation
Open-sided vehicle shelter with solid roof
From £3,750Log Cabin Installation
Quality log cabin for garden office, gym or leisure
From £7,500Heating
New Boiler Installation
Gas boiler replacement or new installation
From £3,130Boiler Replacement
Like-for-like boiler swap with minimal alterations
From £2,500Central Heating Installation
Full central heating system installation
From £5,000Radiator Installation
New radiator installation or replacement
From £250Underfloor Heating Installation
Wet or electric underfloor heating system
From £3,750Air Source Heat Pump
Air source heat pump installation for heating and hot water
From £10,000Ground Source Heat Pump
Ground source heat pump with borehole or trenches
From £22,500Power Flush
Central heating system power flush and clean
From £500Smart Thermostat Installation
WiFi smart thermostat with app control
From £250Hot Water Cylinder Replacement
Unvented or vented hot water cylinder replacement
From £1,000Interior
Plastering
Wall and ceiling plastering or re-skimming
From £500Coving Installation
Decorative coving or cornice installation
From £250Staircase Installation
New staircase supply and installation
From £3,130Flooring Installation
New floor covering installation
From £1,250Wood Floor Sanding
Hardwood floor sanding and refinishing
From £30Skirting Board Installation
Skirting board replacement or new installation
From £380Built-In Wardrobes
Custom fitted wardrobes with interior fittings
From £2,500Interior Decoration
Full room decoration including walls, ceiling and woodwork
From £380Kitchen
Landscaping
Garden Room Installation
Insulated garden room for year-round use
From £15,000Garden Landscaping
Complete garden design and landscaping project
From £6,250Patio Installation
Natural stone or porcelain patio installation
From £3,130Decking Installation
Timber or composite decking with subframe
From £3,130Artificial Grass Installation
Premium artificial lawn with proper base preparation
From £1,880Lawn Installation
New turf or seeded lawn installation
From £1,000Fencing Installation
Garden fence installation or replacement
From £1,250Garden Wall Construction
Brick or block garden wall with foundations
From £2,500Retaining Wall Construction
Structural retaining wall for sloped gardens
From £3,750Outdoor Kitchen Installation
Fully equipped outdoor cooking and dining area
From £6,250Pond Installation
Garden pond with liner, pump and planting
From £1,880Swimming Pool Installation
Outdoor swimming pool with filtration and heating
From £31,250Hot Tub Installation
Hot tub supply, base and electrical installation
From £5,000Pergola Installation
Timber or aluminium pergola structure
From £2,500Garden Lighting Installation
Professional outdoor lighting design and installation
From £1,250Renewable Energy
Solar Panel Installation
Residential solar PV system installation
From £6,250Solar Battery Storage
Home battery system to store solar energy
From £3,750Solar Thermal Installation
Solar hot water heating panel system
From £5,000Wind Turbine Installation
Domestic wind turbine for renewable electricity
From £18,750Roofing
New Roof Installation
Complete roof replacement including tiles and felt
From £6,250Roof Replacement
Replacing worn or damaged roof covering
From £5,630Flat Roof Installation
Flat roof installation using modern materials
From £1,880Roof Repair
Repairing damaged or leaking roof sections
From £250Roof Insulation
Loft or roof insulation to improve energy efficiency
From £630Fascia, Soffit & Guttering
Replacement of roofline boards and rainwater system
From £2,500Chimney Repair
Chimney stack repairs, repointing and flashing
From £630Velux Window Installation
Roof window installation for light and ventilation
From £1,500Security
Burglar Alarm Installation
Wired or wireless intruder alarm system
From £500CCTV Installation
Home CCTV camera system with recording
From £630Security Lighting Installation
Motion-activated external security lighting
From £250Smart Lock Installation
Smart door lock with keyless entry and app control
From £310Safe Installation
Home safe supply and secure installation
From £380Structural
Wall Removal
Load-bearing or non-load-bearing wall removal with steelwork
From £1,880Structural Beam Installation
Steel or timber structural beam installation
From £1,880Underpinning
Foundation strengthening and subsidence repair
From £12,500Subsidence Repair
Investigation and repair of subsidence damage
From £10,000Damp Proofing
Rising damp treatment and DPC installation
From £2,500Tanking & Waterproofing
Basement or cellar waterproofing system
From £3,750Windows & Doors
Double Glazing Installation
Full house double glazed window replacement
From £5,000Triple Glazing Installation
Premium triple glazed windows for superior insulation
From £7,500Window Replacement
Individual window replacement or upgrade
From £440Bi-Fold Doors Installation
Aluminium or uPVC bi-folding door installation
From £4,380Sliding Patio Doors
Sliding patio door replacement or installation
From £2,500French Doors Installation
Classic French door installation with sidelights
From £1,880Front Door Replacement
Composite or timber front door installation
From £1,250Composite Door Installation
High-security composite door for front or back
From £1,500Internal Door Installation
Internal door replacement including lining if needed
From £190Garage Door Installation
Up-and-over, roller or sectional garage door
From £1,000Electric Garage Door
Automated garage door with remote operation
From £1,880