Building RegulationsDrawings and Controlin Lincoln & Lincolnshire

Structure covers foundations, load paths, beams over openings, lintels, floor and roof structure, and lateral stability. On extensions and conversions the critical questions are what the existing structure can carry and how new loads reach the ground. Steel goalposts, flitch beams, padstones and localised underpinning all need calculations, which we coordinate with a structural engineer.

Ground conditions cover foundation depth, contaminated land and resistance to moisture. Shrinkable clay and mature trees are common in Lincolnshire and often push foundations well beyond a standard depth, with a material effect on cost, which is why the site survey happens before the cost plan is finalised.

Part L sets fabric performance and covers wall, floor and roof U-values, glazing area, thermal bridging at junctions and airtightness. Meeting it requires the build-up to be designed rather than assumed, and the junction between new and existing insulation is where most real-world failures occur.

Part F requires a ventilation strategy proportionate to the airtightness achieved: background ventilators and intermittent extract, continuous mechanical extract, or full mechanical ventilation with heat recovery. Part O requires overheating to be addressed in new dwellings, which constrains south and west glazing and pushes shading, cross-ventilation and openable area into the design.

Fire safety governs escape routes, protected stairs, fire doors, alarm systems and the fire resistance of structure and compartment walls. It is the part most likely to affect layout: loft conversions and three-storey houses commonly need a protected stair and interlinked alarms, and open-plan ground floors need a considered escape strategy rather than an assumption.

Part K covers stairs, guarding and protection from falling: headroom, going and rise, balustrade heights and gaps. Part M covers access, including level or ramped approach, door widths and a WC at entrance level on new dwellings. Both are easier to design in at the start than to correct after the walls are up.

Drainage covers foul and surface water, pipe sizing and falls, inspection chambers, soakaway design and connection to existing systems. Building near or over a public sewer requires a build-over agreement with Anglian Water. Surface water disposal is increasingly scrutinised, and soakaways need ground percolation testing where infiltration is proposed.

Part E applies to sound insulation between dwellings and, in some cases, between rooms, particularly relevant for annexes, flat conversions and multi-unit developments, where pre-completion testing or a robust details approach must be planned for rather than discovered at the end.

A full plans application means drawings are assessed and approved before work starts, so problems are found on paper. It is the right route for anything structural or significant, and it is what most lenders and warranty providers expect. A building notice allows work to begin with only site inspections, which suits small, simple jobs but offers no advance certainty.

Where work has already been carried out without approval, a regularisation application is the retrospective route. It usually involves opening up completed work for inspection and bringing it up to the standards that applied at the time. It is unavoidable if you want a clean title at sale, and we can prepare and manage it.