Retrofitting Historic Buildings - Westminster City Council

Internal solid wall insulationDoesBuildingRegs apply?YesDoes Part L1B require this?http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADL1B_2010.pdfPart L1B requiresimprovements to thermalelements, such as walls whererenovation work is taking placeon more than 50% of thesurface of that element (or 25%of the whole building envelope)Note: exemptions for buildingswhich are:1. listed2. in conservation areas3. of architectural andhistorical interest,4. of traditional construction.These buildings should‘improve energy efficiency asfar as is reasonably practicable.The work should not prejudicethe character of the hostbuilding or increase the risk ofdeterioration of the buildingfabric or fittings’.English Heritage haveproduced guidance onapplying part L to historicbuildings 18Permissions and consents...Disruption Risks Unlisted within a Listed buildingconservation areaHigh - this willprobably bebest donewith a vacantproperty orwhen a wholehouse isbeingrefurbishedas the kitchenandbathroommay needrefitting.Very high-Specialistadvice andinstallationrequired dueto possiblemoisture andventilationproblems.Internal alterationsof an unlistedproperty in aconservation areadon’t requireplanningpermission.Would require listedbuilding consent forchanges affectingthe building’scharacter as one ofspecial architecturalor historic interest,such as materials,details and finishes.This may begranted in limitedcircumstances,such as whereoriginal finisheshave already beenlost.Unlisted outside aconservation areaInternal alterationsof an unlistedproperty don’trequire planningpermission.21