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Flat roof extension cost in SO31

A flat roof extension is a great way to add extra space to your home without splashing out on the costs of a pitched roof extension. Often exempt from planning permission rules, you can build a flat roof extension up to 3 metres in height as long as it's not visible from a road. But how much do they cost in SO31?

A flat roof extension ranges from the cheapest of £21,440 (NICK SMITH BUILDERS based in PO15) to the dearest of £22,000 (ITD Builders Ltd based in PO14), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes. 

Find out how much your flat roof extension will cost in SO31 by posting a job with HaMuch. We'll send it to extension builders in SO31.

Estimates for flat roof extension near SO31

Estimates for common extension builder jobs in SO31;

JobEstimate
Underpinning a house£17,207
Build a two storey extension£87,560
Build a timber frame extension£25,707
Install a swimming pool£80,707
Cost to build a single storey extension£49,131
Cost to build a side return extension£38,199
Install an RSJ£1,907
Build an outbuilding£9,707
Build a mansard loft conversion£51,707
Cost of a loft conversion£30,999
Build a kitchen extension£41,707
Build a hip to gable loft conversion£41,707
Build a granny annexe£86,707
Build a garden office£9,707
Convert a garage£15,707
Build a new garage£18,207
Build a flat roof extension£21,707
Build a dormer loft conversion£41,707
Lay a concrete foundation£5,957
Convert a bungalow loft£28,707
Basement conversion cost£34,199
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Rates for other SO31 trades

Appliance Repair Specialist
Bathroom Fitter
Builder
Carpenter and Joiner
Cleaner
Conservatory Specialist
Door Fitter
Drain Specialist
Driveway Specialist
Electrician
Extension Builder
Fencer
Fire and Security Specialist
Flooring Specialist
Gardener
Handyman
Heating Engineer
Kitchen Fitter
Landscaper
Painter and Decorator
Patio and Path Specialist
Plasterer
Plumber
Removals and Storage
Roofer
Tiler
Window Fitter
Flat roof extension cost in SO31
Estimate Flat roof extension cost in SO31 based on hourly/daily rate (excluding VAT or callout charges)
Business name Flat roof extension cost
A W PAVING LTD, Southampton, SO31 £21,920
FOCUS BUILDING SERVICE, Southampton, SO31 £21,600
Stubbs Builders Ltd, Southampton, SO31 £21,776
HSM Building .Company.UK, Fareham, PO15 £21,688
J Wood's Guttering & Property Repairs, 22 Watson Court, Hedge End, Southampton, SO30 £21,656
P.J.P BUILDING SERVICES, Fareham, PO14 £21,688
ROB DINE CONSTRUCTION, Sholing, SO19 £21,688
Mobile Services, Sholing, SO19 £21,712
Simon Frampton Limited, Portsmouth, PO15 £21,776
SHONCEE CONSTRUCTION LTD, Sholing, SO19 £21,688
Ashlett Building Servs Ltd, Hythe, SO45 £21,696
Claytons Building and Roofing, Southampton, SO19 £21,696
A Class Construction Southern Ltd, Southampton, SO19 £21,696
APD Construction & Improvements Limited, Southampton, SO19 £21,712
Andy's Building Services, Sholing, SO19 £21,712
Wall Solutions & Property Maintenance, Fareham, PO15 £21,712
NICK SMITH BUILDERS, Fareham , PO15 £21,440
WALSTONE SPECIALIST BUILDING S, Sholing, SO19 £21,696
The Driveway Division, Unit 20, Longbridge Industrial Park, Sou, SO14 £21,664
The Roofing Division Ltd, Unit 20, Longbridge Industrial Park, Flo, SO14 £21,664
ITD Builders Ltd, Fareham , PO14 £22,000
P BISGROVE BUILDERS LTD, Hythe, SO45 £21,696
O NEILL CONSTRUCTION LTD, Fareham, PO14 £21,688
T A FISH (BUILDERS) LTD, Hythe, SO45 £21,696
Steve Lovett Builders, Bitterne, SO18 £21,704

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Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Flat Roof Extension near Locks Heath£30£213
Flat Roof Extension near Hedge End£30£215
Flat Roof Extension near Fareham£31£217
Flat Roof Extension near Southampton£30£215
Flat Roof Extension near Lee-on-the-Solent£31£217
Flat Roof Extension near Eastleigh£30£215
Flat Roof Extension near Gosport£30£215
Flat Roof Extension near Chandler's Ford£30£216
Flat Roof Extension near Totton£30£216
Flat Roof Extension near Portsmouth£31£216