Building Control and Completion Certificates for London Home Projects: A Complete Guide

BUILDING REGULATIONS 2010 (AS AMENDED) APPLY TO ANY BUILDING WORK IN ENGLAND. THEY SET MINIMUM STANDARDS FOR STRUCTURAL SAFETY, FIRE SAFETY, DRAINAGE, THERMAL PERFORMANCE, VENTILATION, ELECTRICAL SAFETY, AND ACCESSIBILITY. THE FOLLOWING TYPES OF WORK REQUIRE BUILDING REGULATIONS APPROVAL FOR RESIDENTIAL PROPERTIES:

ALWAYS REQUIRES APPROVAL: - EXTENSIONS (SINGLE, DOUBLE-STOREY, REAR, SIDE, WRAP-AROUND) — REGARDLESS OF SIZE - LOFT CONVERSIONS — ALWAYS (HABITABLE ROOM, STRUCTURAL WORK, MEANS OF ESCAPE, FIRE PROTECTION) - BASEMENT CONVERSIONS — ALWAYS (WATERPROOFING, STRUCTURAL, MEANS OF ESCAPE) - GARAGE CONVERSIONS — ALWAYS (THERMAL, STRUCTURAL, FIRE SEPARATION) - STRUCTURAL ALTERATIONS (REMOVING WALLS, INSERTING STEEL BEAMS, UNDERPINNING) - NEW OR REPLACEMENT HEATING SYSTEMS (BOILER REPLACEMENT REQUIRES NOTIFICATION OR GAS SAFE SELF-CERTIFICATION) - NEW BATHROOMS AND EN-SUITES WHERE DRAINAGE OR PLUMBING IS INSTALLED - REWIRING OR NEW CONSUMER UNIT (NOTIFIABLE ELECTRICAL WORK UNLESS SELF-CERTIFIED BY PART P REGISTERED ELECTRICIAN) - CAVITY WALL INSULATION (REGISTERED INSTALLER CAN SELF-CERTIFY) - FLAT ROOF REPLACEMENT OVER HABITABLE SPACE (THERMAL PERFORMANCE REQUIREMENT) - SOLAR PANELS ON ROOFS (NORMALLY NOTIFIED BUT SIMPLIFIED ROUTE EXISTS)

DOES NOT REQUIRE BUILDING REGULATIONS APPROVAL (TYPICALLY): - INTERNAL DECORATION - LAYING FLOOR FINISHES (WHERE NO STRUCTURAL OR HEATING WORK IS INVOLVED) - REPLACING KITCHEN UNITS (LIKE-FOR-LIKE, NOT INVOLVING STRUCTURAL WORK, DRAINAGE CHANGES, OR ELECTRICAL UPGRADES BEYOND SELF-CERTIFICATION) - REPLACING EXTERNAL WINDOWS OR DOORS IN A LIKE-FOR-LIKE MANNER WHERE A FENSA OR CERTASS-REGISTERED INSTALLER IS USED (THEY SELF-CERTIFY) - GARDEN WALLS AND FENCES (BELOW SPECIFIED HEIGHTS) - MINOR REPAIRS (LIKE-FOR-LIKE REPLACEMENT OF SMALL AREAS OF ROOF TILES)

NOTE: THE ABOVE IS A SUMMARY — FOR ANY SPECIFIC WORK, CONFIRM WITH YOUR LOCAL AUTHORITY BUILDING CONTROL (LABC) OR APPROVED INSPECTOR BEFORE PROCEEDING WITHOUT APPROVAL.

BUILDING REGULATIONS APPROVAL IN ENGLAND CAN BE OBTAINED FROM TWO SOURCES:

LOCAL AUTHORITY BUILDING CONTROL (LABC): - THE TRADITIONAL ROUTE — ADMINISTERED BY THE LOCAL PLANNING AUTHORITY\'S BUILDING CONTROL DEPARTMENT - FOR LONDON BOROUGHS: EACH BOROUGH HAS ITS OWN BUILDING CONTROL SERVICE (SOUTHWARK, LAMBETH, HARINGEY, HACKNEY, ETC.) - FEES ARE SET BY LOCAL AUTHORITY BUT ARE REGULATED BY THE BUILDING (LOCAL AUTHORITY CHARGES) REGULATIONS — TYPICALLY £400-1,500 FOR STANDARD RESIDENTIAL PROJECTS - APPLICATION TYPES: FULL PLANS (PLANS SUBMITTED BEFORE WORK — RECOMMENDED FOR ALL SIGNIFICANT PROJECTS); BUILDING NOTICE (NO PRIOR PLAN APPROVAL — WORK CAN START QUICKLY BUT HIGHER RISK OF NON-COMPLIANCE DISCOVERED DURING INSPECTION) - LABC COMPLETION CERTIFICATES ARE REQUIRED FOR BUILDING NOTICE APPLICATIONS

APPROVED INSPECTORS (AIs): - PRIVATE SECTOR ALTERNATIVE TO LABC — APPROVED INSPECTORS ARE APPROVED BY THE CONSTRUCTION INDUSTRY COUNCIL (CIC) AND REGISTERED WITH CICAIR - LEADING APPROVED INSPECTORS OPERATING IN LONDON: STROMA BUILDING CONTROL; ASSENT BUILDING CONTROL; BALL + BERRY; SAVA; BUTLER & YOUNG - TYPICALLY FASTER PLAN TURNAROUND THAN LABC (5-10 WORKING DAYS VS LABC\'S 10-15) - MORE FLEXIBLE INSPECTION SCHEDULING - FEES SIMILAR TO LABC — TYPICALLY £450-1,500 FOR STANDARD RESIDENTIAL PROJECTS - AIs ISSUE A CERTIFICATE OF COMPLETION (FINAL CERTIFICATE) EQUIVALENT IN LEGAL STANDING TO LABC COMPLETION CERTIFICATE - AIs NOTIFY THE LOCAL AUTHORITY OF THE FINAL CERTIFICATE — IT IS RECORDED ON THE LOCAL AUTHORITY DATABASE

SINCE THE BUILDING SAFETY ACT 2022 (FULLY IMPLEMENTED FROM OCTOBER 2023 FOR HIGHER RISK BUILDINGS), THE FRAMEWORK HAS BEEN UPDATED. FOR STANDARD RESIDENTIAL WORK (NOT HIGH-RISK BUILDINGS), THE ABOVE ROUTES REMAIN UNCHANGED.

SELF-CERTIFICATION SCHEMES: FOR CERTAIN TYPES OF WORK, REGISTERED CONTRACTORS CAN SELF-CERTIFY COMPLIANCE WITHOUT NOTIFYING LABC OR AN AI: - GAS SAFE REGISTERED ENGINEERS (GAS WORK — BOILERS, FIRES) - FENSA OR CERTASS-REGISTERED WINDOW/DOOR INSTALLERS - PART P REGISTERED ELECTRICIANS (CERTS ISSUED VIA NAPIT, NICEIC, ELECSA) - REGISTERED CAVITY WALL INSULATION INSTALLERS THESE SCHEMES ISSUE CERTIFICATES THAT SHOULD BE RETAINED WITH THE PROPERTY DOCUMENTATION.

ONCE A FULL PLANS OR BUILDING NOTICE APPLICATION IS SUBMITTED AND (FOR FULL PLANS) APPROVED, BUILDING CONTROL INSPECTORS CARRY OUT A SERIES OF SITE INSPECTIONS AT KEY STAGES. THE CONTRACTOR IS RESPONSIBLE FOR NOTIFYING BUILDING CONTROL BEFORE EACH STAGE — FAILURE TO NOTIFY BEFORE COVERING WORK CAN RESULT IN REQUIREMENTS TO OPEN UP COMPLETED WORK.

TYPICAL INSPECTION STAGES FOR A REAR EXTENSION:

COMMENCEMENT NOTICE: SUBMITTED 2 WORKING DAYS BEFORE STARTING — BUILDING CONTROL RECORDS THE PROJECT AS ACTIVE.

EXCAVATION/FOUNDATION INSPECTION: BEFORE CONCRETE IS POURED — INSPECTOR CHECKS: EXCAVATION DEPTH AND WIDTH; SOIL CONDITIONS (CONFIRMS DESIGN BEARING CAPACITY); REINFORCEMENT IF SPECIFIED; BLINDING LAYER.

DAMP PROOF COURSE (DPC) INSPECTION: BEFORE MASONRY IS BUILT ABOVE DPC LEVEL — CONFIRMS DPC IS CORRECTLY POSITIONED AND LAPPED.

FLOOR SLAB (OVERSITE) INSPECTION: WHERE APPLICABLE — CONFIRMS INSULATION DEPTH, DPM INSTALLATION, AND SLAB REINFORCEMENT.

STRUCTURAL INSPECTION (STEEL BEAMS): WHERE STRUCTURAL STEEL IS INSTALLED — CONFIRMS BEAM SIZE, PADSTONES, TEMPORARY PROPPING, AND BEARING LENGTH BEFORE PERMANENT FIXINGS.

ROOF STRUCTURE INSPECTION: CONFIRMS RAFTER/JOIST SIZES, SPANS, AND STRUCTURAL DETAILS BEFORE DECK AND ROOFING.

PRE-PLASTER INSPECTION (FIRST-FIX): FIRST-FIX ELECTRICAL (CABLES ROUTED BEFORE PLASTERING), FIRST-FIX PLUMBING, INSULATION IN WALLS AND CEILING — ALL CHECKED BEFORE PLASTERING COVERS THEM.

DRAINAGE INSPECTION: NEW UNDERGROUND DRAINAGE BEFORE BACKFILLING — CONFIRMS PIPE SIZE, FALLS, INSPECTION CHAMBERS, AND CONNECTIONS.

COMPLETION INSPECTION: ALL WORK COMPLETE — CONFIRMS SECOND-FIX ELECTRICAL (SOCKETS, SWITCHES, CONSUMER UNIT), SECOND-FIX PLUMBING (SANITARYWARE, TAPS), SMOKE ALARMS, CARBON MONOXIDE ALARMS, VENTILATION (TRICKLE VENTS, EXTRACT FANS), FIRE DOORS WHERE REQUIRED, AND OVERALL COMPLIANCE. THIS INSPECTION TRIGGERS THE COMPLETION CERTIFICATE.

THE COMPLETION CERTIFICATE (FROM LABC) OR FINAL CERTIFICATE (FROM APPROVED INSPECTOR) IS THE DOCUMENT THAT CONFIRMS THE WORK HAS BEEN CARRIED OUT IN ACCORDANCE WITH BUILDING REGULATIONS. IT IS ONE OF THE MOST IMPORTANT DOCUMENTS FOR PROPERTY TRANSACTIONS IN ENGLAND.

WHY COMPLETION CERTIFICATES MATTER: ON SELLING A PROPERTY: PROPERTY INFORMATION FORMS (TA6) ASK SPECIFICALLY WHETHER BUILDING REGULATIONS APPROVAL WAS OBTAINED FOR WORK CARRIED OUT AND WHETHER A COMPLETION CERTIFICATE WAS RECEIVED. A MISSING CERTIFICATE IS A CONVEYANCING RED FLAG — SOLICITORS AND BUYERS WILL TYPICALLY REQUIRE EITHER: (A) A COMPLETION CERTIFICATE; OR (B) AN INDEMNITY INSURANCE POLICY (£100-300 PREMIUM) COVERING THE RISK OF LABC ENFORCEMENT.

ON MORTGAGE: MORTGAGE LENDERS (PARTICULARLY ON HIGHER-VALUE LONDON PROPERTIES) MAY REQUIRE SIGHT OF COMPLETION CERTIFICATES FOR MATERIAL WORKS. A MISSING CERTIFICATE CAN DELAY OR PREVENT MORTGAGE APPROVAL.

WHAT HAPPENS WITHOUT A COMPLETION CERTIFICATE: - BUILDING CONTROL CAN ISSUE A CONTRAVENTION NOTICE WITHIN 12 MONTHS OF WORK COMPLETION REQUIRING THE OWNER TO REMEDY NON-COMPLIANCE - AFTER 12 MONTHS, LOCAL AUTHORITIES CAN STILL TAKE ACTION UNDER SECTION 36 OF THE BUILDING ACT 1984 — THOUGH IN PRACTICE THIS IS RARE FOR GENUINE BUT UNAPPROVED WORKS - FUTURE BUYERS MAY REQUIRE WORK TO BE OPENED UP FOR INSPECTION — E.G. CONCRETE POURED OVER FOUNDATIONS WITHOUT INSPECTION MAY REQUIRE BREAKING UP PART OF THE SLAB

OBTAINING A COMPLETION CERTIFICATE RETROSPECTIVELY: - REGULARISATION APPLICATION: SUBMITTED TO LABC (NOT APPROVED INSPECTORS — THEY CANNOT DO RETROSPECTIVE) — FEE TYPICALLY 20% HIGHER THAN ORIGINAL APPROVAL FEE - LABC INSPECTS COMPLETED WORK — MAY REQUIRE OPENING UP OF CONCEALED ELEMENTS (FOUNDATIONS, FIRST-FIX WIRING) TO VERIFY COMPLIANCE - IF WORK IS FOUND NON-COMPLIANT, LABC ISSUES A SCHEDULE OF DEFECTS REQUIRING REMEDIATION BEFORE CERTIFICATE IS ISSUED

SCENARIO 1: BUYING A LONDON PROPERTY WITH MISSING CERTIFICATES ASK THE SELLER TO PROVIDE: COPY OF ANY BUILDING NOTICE OR FULL PLANS APPLICATION; COPY OF COMPLETION CERTIFICATE; FENSA/GAS SAFE/PART P CERTIFICATES FOR WORKS DONE IF MISSING: INSTRUCT YOUR SOLICITOR TO REQUEST INDEMNITY INSURANCE — ACCEPT THIS ONLY FOR WORK THAT APPEARS COMPLIANT. FOR SIGNIFICANT STRUCTURAL WORKS (EXTENSIONS, LOFT CONVERSIONS), CONSIDER COMMISSIONING A STRUCTURAL ENGINEER REPORT AND/OR ASKING THE SELLER TO MAKE A RETROSPECTIVE REGULARISATION APPLICATION.

SCENARIO 2: PREVIOUS OWNER DID WORK WITHOUT APPROVAL IF YOU DISCOVER UNAPPROVED WORK DURING YOUR OWN RENOVATION: DO NOT IGNORE IT — YOU MAY BE REQUIRED TO REMEDY IT. CONSULT LABC AND YOUR SOLICITOR. FOR RELATIVELY MINOR WORKS MORE THAN 12 MONTHS OLD, AN INDEMNITY INSURANCE POLICY MAY BE THE PRACTICAL SOLUTION.

SCENARIO 3: YOUR CONTRACTOR DIDN\'T NOTIFY BUILDING CONTROL IF A CONTRACTOR DID WORK REQUIRING BUILDING REGULATIONS WITHOUT NOTIFYING BUILDING CONTROL: MAKE A LATE BUILDING NOTICE OR REGULARISATION APPLICATION IMMEDIATELY. DO NOT WAIT UNTIL THE PROPERTY IS SOLD — LABC IS MORE COOPERATIVE WHEN APPROACHED PROACTIVELY.

SCENARIO 4: SELF-CERTIFICATION WORKS (WINDOWS, ELECTRICS, GAS) ENSURE THE CONTRACTOR ISSUES THE APPROPRIATE CERTIFICATE (FENSA, NICEIC/NAPIT, GAS SAFE CERTIFICATE). THESE ARE EQUIVALENT TO BUILDING CONTROL COMPLETION FOR THESE SPECIFIC WORKS. RETAIN ALL CERTIFICATES IN A PROPERTY FILE.

FEES AND TIMESCALES: - FULL PLANS APPLICATION (BEFORE WORK): £400-1,500 DEPENDING ON PROJECT SCOPE — SUBMITTED TO LABC OR AI - BUILDING NOTICE: SAME FEE RANGE — SUBMITTED TO LABC ONLY - REGULARISATION (RETROSPECTIVE): TYPICALLY 20-30% HIGHER THAN STANDARD FEE - PLAN APPROVAL TIME: LABC 5-15 WORKING DAYS; AI 5-10 WORKING DAYS - FINAL CERTIFICATE ISSUANCE: WITHIN 5 WORKING DAYS OF FINAL INSPECTION FOR APPROVED APPLICATIONS