How much do SAP calculations cost in Bristol and Somerset?

Pricing starts from £95+VAT per dwelling for SAP calculations and EPCs across Bristol, Bath, South Gloucestershire and North Somerset. SAP is a desk-based service so there are no travel charges. Larger schemes and multi-plot developments are priced per dwelling on a sliding scale; commercial new builds requiring SBEM are quoted separately.

Will my Bristol or Somerset planning application require a Design Stage SAP?

Often, yes. Bristol's Climate Emergency commitments and One City Plan frequently require Design Stage SAP and an energy strategy at planning. Bath & North East Somerset, South Gloucestershire and North Somerset have similar requirements for major residential schemes — particularly those triggering policy thresholds for sustainability or carbon reduction. We can prepare both the SAP and the supporting energy statement to meet local validation requirements.

Can you handle SAP for projects in the Bath World Heritage Site or other heritage settings?

Yes. We understand the additional sensitivities that come with the Bath World Heritage Site, conservation areas, and listed building settings. Heritage windows, slim-profile glazing and hidden insulation upgrades can be specified within SAP at appropriate U-values; we work alongside your conservation officer or heritage consultant to find a SAP-compliant route that respects the architectural constraints.

Part L · Design & Planning

SAP Calculations & EPCs
in Bristol & Somerset

Q: How quickly can you turn around a SAP in Bristol or Somerset?

Standard turnaround on a Design Stage SAP is 3-5 working days from receipt of drawings and specifications. As-Built SAPs and EPCs are issued within the same window once the air test result and final specification confirmations are received. Urgent turnarounds are available on request — call us to discuss.

Q: Do you cover all four Bristol and Somerset LPAs?

Yes. We deliver SAP calculations and EPCs across Bristol City Council, Bath & North East Somerset, South Gloucestershire and North Somerset, plus the wider Somerset Council areas (Taunton, Bridgwater, Yeovil and beyond). As SAP is desk-based, location does not affect turnaround or fee.

Q: Can you handle full Part L compliance — not just SAP?

Yes. In addition to SAP and EPCs we cover air tightness testing, ventilation testing, U-value calculations, PSI-value calculations, overheating (Part O) assessments, water usage (Part G), and energy statements. For larger schemes we can package the full Part L compliance scope and coordinate it as one programme.

OCDEA-accredited SAP and EPC delivery across the South West's 4 main LPAs — Bristol City, Bath & North East Somerset, South Gloucestershire and North Somerset. From £95+VAT per dwelling. 3-5 day turnaround. Local knowledge of Bristol One City Plan and every South West Local Plan.

Get a SAP Quote Our SAP process

OCDEA

accredited assessors
EES/030713

3-5 day

typical turnaround
urgent slots available

4 LPAs

covered across
Bristol & Somerset

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OCDEA accredited · 3-5 day turnaround across the South West

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SAP calculations in Bristol & Somerset

Local OCDEA assessors covering Bristol, Bath, and the wider South West.

Bristol and the wider South West are one of the UK's fastest-growing residential development markets. Four core LPAs — Bristol City, Bath & North East Somerset, South Gloucestershire, and North Somerset — operate ambitious sustainability policies, and the Bristol One City Plan sets a city-wide carbon-neutral target. We work with all four on a regular basis. Build Envelope is OCDEA-accredited (EES/030713) and accessible to Bristol via the M5.

SAP (Standard Assessment Procedure) is the government-approved method for calculating the energy performance of new build dwellings. It is required at Design Stage to demonstrate compliance with Part L, and again at As-Built stage before an EPC can be issued.

Bristol's Climate Emergency commitment, B&NES sustainability policy in the Bath World Heritage Site, South Gloucestershire's Core Strategy, and North Somerset's Local Plan all set energy performance bars that often go beyond Part L baseline. We understand what each LPA's planning officers expect to see in submitted documentation.

Whether you are submitting outline planning, reserved matters, or seeking a fully accredited SAP and EPC, we deliver in 3-5 working days. Urgent turnarounds available — call us.

Part L 2021 compliance

DER ≤ TER

Dwelling Emissions Rate must be lower or equal to Target Emissions Rate — Part L 2021, England

Bristol One City Plan. Bristol's Climate Emergency commitments target net zero by 2030. Major residential schemes are increasingly being asked to demonstrate above-Part L performance at planning stage.

EPC ratings: A (92+), B (81-91), C (69-80). Most South West new builds need to achieve a B or higher.

The SAP process

How we deliver your SAP and EPC.

SAP is desk-based, so we can work in parallel with your design team from anywhere. Most projects are turned around in 3-5 working days from receipt of drawings.

Drawings & spec review

Send us your floor plans, elevations, sections, and any specification information you have. We confirm scope, dwelling count, and turnaround on the same day — with a fixed fee quote.

Design Stage SAP

We model each dwelling in approved SAP 10.2 software (Elmhurst), testing the proposed specification against Part L 2021 and any applicable Bristol or Somerset LPA policy. If anything fails, we flag the lowest-cost route to compliance.

Compliance & sign-off

You receive the Design Stage SAP report, BRUKL document, and Predicted Energy Assessment for Building Control and planning submission. Suitable for inclusion in your validation pack.

As-Built SAP & EPC

Once the air test is complete and final specifications are confirmed, we issue the As-Built SAP and lodge the EPC. Both documents are required by Bristol or Somerset Building Control teams before completion sign-off.

What we need from you

A complete SAP starts with the right inputs.

The faster we receive a complete information pack, the faster we can issue your SAP. Most delays in turnaround come from incomplete drawings, missing build-up specifications, or unconfirmed services details — all easy fixes once you know what we need.

For Design Stage SAP, dimensioned floor plans, elevations and sections are usually enough to start. We will follow up by email if anything is missing or unclear. Where required, we can model multiple specification options — for example, gas vs heat pump, or different glazing U-values — so you can choose the route that works for the project budget.

If your scheme is subject to specific South West or Bristol planning conditions — for example, an energy strategy under Bristol One City Plan, B&NES sustainability policy, or a South Gloucestershire planning condition requiring net zero ready or carbon offset — flag this early so we can structure the SAP and supporting documents to address them in one go.

Information checklist

Dimensioned floor plans Each floor at scale, showing room layouts, openings, and any heated/unheated zones.

Elevations & sections For glazing area calculations, ceiling heights, and orientation.

Construction build-ups (if known) Wall, roof, floor and glazing specifications — otherwise we'll model standard performance assumptions.

Heating & hot water strategy Boiler / heat pump model, hot water cylinder, controls, and any renewables (solar PV, MVHR).

Site address & orientation For solar gain calculations and to confirm the applicable LPA.

Planning conditions (if any) Forward any LPA conditions or pre-app feedback — particularly anything mentioning energy performance or sustainability.

Districts we cover

SAP delivery across the four South West LPAs.

Local knowledge of each South West LPA's Local Plan policies, sustainability requirements, and planning condition templates.

Bristol City Council

Bristol city centre, Clifton, Redland, Bedminster, Easton. Bristol One City Plan and Climate Emergency policy drive sustainability bar.

Bath & North East Somerset

Bath, Keynsham, Midsomer Norton, Radstock. World Heritage Site sensitivities and B&NES Local Plan policy.

South Gloucestershire

Yate, Thornbury, Bradley Stoke, Filton, Kingswood. Major housing growth under the Joint Spatial Plan.

North Somerset

Weston-super-Mare, Clevedon, Portishead, Nailsea. Coastal and inland new builds.

Wider Somerset

Taunton, Bridgwater, Yeovil, Burnham-on-Sea — flexible coverage of Somerset Council areas.

Wider England & Wales

OCDEA SAP and EPCs delivered nationally — your local LPA, our remote-first delivery.

We also cover: Birmingham & West Midlands, Gloucestershire, Worcestershire, Warwickshire

FAQ

Common questions about SAP calculations in Bristol & Somerset.

Pricing starts from £95+VAT per dwelling for SAP calculations and EPCs across Bristol, Bath, South Gloucestershire and North Somerset. SAP is a desk-based service so there are no travel charges — whether your site is in central Bristol or rural North Somerset, the fee is the same.

Larger schemes and multi-plot developments are priced per dwelling on a sliding scale. Commercial new builds requiring SBEM are quoted separately. There are no hidden fees — the quoted price includes the SAP report, BRUKL, Predicted Energy Assessment, and lodged EPC.

Standard turnaround on a Design Stage SAP is 3-5 working days from receipt of drawings and specifications. As-Built SAPs and EPCs are issued within the same window once the air test result and final specification confirmations are received.

Urgent turnarounds are available on request — call 01386 365145 to discuss timing on a specific project.

Often, yes. Bristol's Climate Emergency commitments and One City Plan often require Design Stage SAP at planning — particularly for major residential schemes or any application with sustainability conditions.

B&NES, South Glos and North Somerset have similar requirements for major schemes. We can prepare both the SAP and the supporting energy statement to meet local validation requirements in one go.

If the Dwelling Emissions Rate (DER) is higher than the Target Emissions Rate (TER), we identify the lowest-cost specification changes that bring the dwelling into compliance — typically improvements to fabric U-values, glazing performance, air permeability, or heating system efficiency.

We model multiple options so you can choose the route that best fits your project budget and buildability. We never just hand back a fail — we hand back a fail with a route to a pass.

Yes. We deliver SAP calculations and EPCs across Bristol City Council, Bath & North East Somerset, South Gloucestershire and North Somerset, plus the wider Somerset Council areas (Taunton, Bridgwater, Yeovil and beyond).

As SAP is desk-based, location does not affect turnaround or fee. Same delivery for a self-build in Clifton, a 50-plot scheme in Yate, or a coastal development in Portishead.

Yes. In addition to SAP and EPCs we cover air tightness testing, ventilation testing, U-value calculations, PSI-value calculations, overheating (Part O) assessments, water usage (Part G), and energy statements.

For larger schemes we can package the full Part L compliance scope and coordinate it as one programme — reducing admin overhead and keeping all the inputs aligned across documents.

Yes, we understand the additional sensitivities that come with the Bath World Heritage Site, conservation areas, and listed building settings. Heritage windows can be specified within SAP at appropriate U-values; we work with your conservation officer to find a SAP-compliant route that respects the architectural constraints.

Slim-profile glazing, internal wall insulation, and concealed renewable systems can all be modelled. Where retrofits are constrained, we can also help structure the energy strategy to demonstrate best-achievable performance to the planning officer.

SAP Calculations & EPCsin Bristol & Somerset