SAP Data Entry for Extensions (whole house assessment) Please complete as fully as possible and email to jerry@c2cdartmouth.co.uk Please note that construction drawings including plan, elevation and sectional views will be required along with a schedule of window, door and roof light specifications, dimensions and locations. PDF or CAD plans are preferred. Paper versions may be accommodated at additional cost but please note that photocopies cannot be used as the scale may be distorted. Contact Name
Contact Email
Contact Number
Property Name
Property Address
Property Type (House, bungalow etc.)
Property Type (End Terrace, detached etc.)
Property Orientation (where does the front door face?)(NSEW) Existing Property Date Built
Existing Property Main Wall Construction (from external to internal). Please give details of any upgrade as part of project (continue at end if necessary) e.g. mm brickwork, mm cavity, mm insulation, mm block, mm plaster

Existing Secondary Wall Construction (from external to internal) e.g. mm brickwork, mm cavity, mm polystyrene, mm block, mm plaster
U-Value (W/m²K) achieved if known
Existing Roof Type and Construction (external to internal). Please give details of any upgrades to insulation. E.g. Pitched roof with insulation at rafters, pitched roof insulated flat ceiling or flat roof.
U-Value (W/m²K) achieved if known
Existing Ground Floor Details (external to internal). Please give details of any upgrades to insulation e.g. mm Concrete Slab, mm insulation, mm screed etc
U-Value (W/m²K) if known
Existing Glazing Single Glazing Double Glazing Air gap 6mm 12mm 16mm 20mm 24mm Other Triple Glazing Air gap 6mm 12mm 16mm 20mm 24mm Other
Existing Window Frame Type (timber, upvc, composite. etc.)
Window Properties K Glass Argon Filled Soft Coat Hard Coat
Area of Windows and Doors that will no longer exist or be exposed (m²)
Heating Description e.g. wall mounted gas boiler or ASHP. Please state if boiler is being changed as part of project.
Manufacturer other
Model Fuel
Heating Controls Programmer Flow switch Thermostat Zone Control TRV's Load Compensator Bypass Weather Compensator Delayed Start Thermostat
Other Heating Controls Type of Heating Radiators Underfloor (UFH) Radiators & UFH Electric Underfloor For UFH Pipes in wood Pipes in screed Pipes in concrete
Secondary Heating Type and location e.g. wood burning stove in lounge
Secondary Heating Fuel
Electricity Tariff Standard Economy 7 10Hr tariff 24Hr tariff Other
Other (Only input if selected above)
Hot Water System (Please give details of new and existing if changed as part of project) Hot Water Cylinder Insulation Thickness or Standing Heat Loss (more accurate if known) Hot Water Cylinder Insulation Type Factory Fitted Foam Jacket
Cylinder Stat Cylinder in heated space
Hot Water Cylinder Size Hot Water Cylinder details (please include make, model, single or dual immersion standing heat loss)
Ventilation Type Natural Mechanical Mechanical with heat recovery Other Other (Only input if selected above)
Number of Extractor Fans
Total Light Fittings
Total Low Energy Light Fittings

New Extension Main Wall Construction (from external to internal) e.g. mm brickwork, mm cavity, mm insulation, mm block, mm plaster U-Value (W/m²K) achieved if known
New Extension Secondary Wall Construction (from external to internal) e.g. mm brickwork, mm cavity, mm insulation, mm block, mm plaster Please include details of internal partitions and room in roof stud walls. U-Value (W/m²K) achieved if known
New Extension Roof Type & Construction (external to internal) E.g. Pitched roof with insulation at rafters, pitched roof insulated flat ceiling or flat roof. Please give full details of all layers.
U-Value (W/m²K) if known
New Extension Ground Floor Details (external to internal) e.g. mm Concrete Slab, mm insulation, mm screed etc
U-Value (W/m²K) if known
New Extension Glazing Type Double Glazing Air gap 6mm 12mm 16mm 20mm 24mm Other Triple Glazing Air gap 6mm 12mm 16mm 20mm 24mm Other
New Extension Window Frame Type Window Properties K Glass Argon Filled Triple Glazed Soft Coat Hard Coat Low e
U-Value (W/m²K) if known for whole frame unit from manufacturer’s specification
Additional Information Please enter any additional information and detail any changes to existing property as part of the project.

I certify that these details are correct to the best of my knowledge.

Signed Name (Print)

Position Date