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Planning and building standards

Loft checklist

Use this list to check your plans before you submit your building warrant for a loft conversion or extension. It could help speed up the process by making sure you have everything you need.

The checklist includes common points raised by our surveyors when assessing loft applications. It's not complete list as projects can vary.

Before you start

You'll need:

  • completed building warrant application form
  • form should include applicant's name, address, phone number and email address
  • if using an agent such as an architect, the form should also include agent's name, address, phone number and email address
  • correct fees
  • appropriate plans and specifications

General checklist

General checklist
Mark the plan or drawing with the following and submit with your applicationCheck or give plan or drawing number
Provide 2 copies of the following plans or drawings: 
Block or site plan at a scale of 1:200 or 1:500. 
Location plan at a scale of 1:1250. This should be outlined in red ink. 
Elevations and floor plans of the building as existing at a scale of 1:50 or 1:100. 
Elevations and floor plans of the building as proposed at a scale of 1:50 or 1:100. We may need a larger scale of the proposed floor plan of 1:20 if the work is complex. Plans should show proposed works coloured as per the Procedural Regulations. 
Sectional elevations through the proposed works at a scale of 1:50. We may need larger scale sections at a scale of 1:20 to show specific construction details. 
Full dimension plans. Include all critical dimensions and show use of rooms. Show activity spaces to rooms. Any space with headroom less than 1.5m cannot be considered as activity space. 

A full construction specification.

This be clear notes added to the plans or a separate specification sheet to read with the plans. Generic specifications are not suitable. All specification should be specific to the actual works applied for.

If you apply online, submit a separate specification sheet we can read with the submitted plans. All plans must have a title block with applicants name, site address, a description of the plan.  Include the scale and unique reference number.

 
Confirm age of the property to decide which category the U values should comply with. This refers clause 6.2.9 of the Domestic Handbook 2010. 

 Roof and structural checklist

Roof and structural checklist
Mark the plan or drawing with the following and submit with your applicationCheck or give plan or drawing number

Provide a roof member layout plan. This should include any dormer construction, strengthened rafters/joists, trimmers.

 

The design may need to be accompanied by design calculations and/or structural design certificates from a qualified structural engineer.

 

Structural engineers drawings may be needed to accompany any structural design certificate or calculations.

 

Structural works should be independently supported at half brick thick party walls.

 

If pre manufactured trusses to be used, a roof truss design certificate will be needed.

 

Specify under felt.

 

Specify baton and counter baton sizes.

 

Specify roof covering.

 

Specify tie down straps, truss clips, lateral restraints.

 

Specify valley gutters (if applicable), and any other revised rainwater provisions.

 

Specify ventilation to roof voids and ventilation between insulation an sarking boards.

 

Specify roof insulation and provide a u value calculation. Show and specify a vapour membrane.

 

If a dormer wall is within 1m of any boundary it will require suitable fire protection.

 

Electrical checklist

Electrical checklist
Mark the plan or drawing with the following and submit with your applicationCheck or give plan or drawing number

All electrical works to be to BS7671 : 2008 (17th edition of IEE Regulations).

 

Electrics to be installed and/or tested by a SELECT or NICEIC approved electrician. An electrical certificate is needed before completion is approved.

 

Show all lighting points and sockets on plans.

 

Specify height of sockets and light switches on plans.

 

Show and specify all mechanical ventilation on plans.

 

Show all mechanical vent terminals on elevation plans.

 

Extend smoke detection/heat detection system to extension where needed and show on plans. Smoke and heat detection to original property may need to be upgraded. 

 

Plumbing and draining checklist

Plumbing and draining checklist
Mark the plan or drawing with the following and submit with your applicationCheck or give plan or drawing number

Show all existing and proposed underground drainage.

 

Show all proposed internal pipework.

 

All wash hand basins and WCs need to be fitted with water saving devices.

 

Show and specify escape windows where needed.

 

Show opening configuration for all windows and doors and specify provisions for safely cleaning glazing.

 

Show distance from any new window or rooflight to any existing chimney, flue and soil vent pipe (SVP).

 

Windows on any 3rd storey should be designed so that to any openable section is a minimum of 1100mm above finished floor level. Or if fitted with a suitable guard rail at a height of 1100mm above finished floor level.

 

Stairs and landing checklist

Stairs and landing checklist
Mark the plan or drawing with the following and submit with your applicationCheck or give plan or drawing number

Specify all stairs, landings, handrails and protective barriers.

 

Specify headroom to stairs and landings. Provision for future installation of a stairlift may be required.

 

Third storey fire protection checklist

Third storey fire protection checklist
Mark the plan or drawing with the following and submit with your applicationCheck or give plan or drawing number

Specify suitable self closing fire doors to all rooms connecting with the stair enclosure.

 

Specify suitable fire protected stair enclosure.

 

Original panelled doors may not be suitable to be upgraded to fire doors.

 
If intumescent paint to be used to upgrade existing doors, an intumescent paint certificate is need before completion. The paint manufacturer's product details are needed before we issue the warrant.  

Sound proofing and parity walls checklist

Sound proofing and parity walls checklist
Mark the plan or drawing with the following and submit with your applicationCheck or give plan or drawing number

New apartments need to be suitably sound proofed, including any floors between apartments.

 

If a semi detached or terraced please provide a party wall specification. Services should not be located on a party wall. For party wall detailing, demonstrate fire, sound, and thermal performance. Party wall to be extended down into eaves and up to ridge to prevent flanking sound transfer.

 
General checklist 2
Mark the plan or drawing with the following and submit with your applicationCheck or give plan or drawing number

Add this note to the plans:
'The Relevant Person is responsible for ensuring all works are carried out in accordance with The Building (Scotland) Act 2003, as amended, and The Building (Scotland) Regulations 2004, as amended.

 

The building warrant is subject to a Construction Compliance and Notification Plan (CCNP) that will be issued when the warrant is approved. The CCNP needs you contact us at all stages listed on the CCNP when ready for inspection.

 

Related information

pdf icon Download loft/attic checklist [33kb]

Apply for a building warrant

Building warrant fees

Extension checklist

 

 


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