Part L Consultant
    SAP, SBEM and Part L compliance across England and Wales

    Part L compliance,
    made simple.

    Design-stage and as-built SAP calculations, SBEM and BRUKL reports, overheating assessments and on-construction EPCs — for new builds, extensions, conversions and mixed-use schemes. Guide bands up front, then a fixed written quote from your drawings.

    See how it works

    Developers, self-builders, architects and homeowners — single plots through to multi-block schemes.

    From £120
    Per plot, guide rate
    Fixed quotes
    In writing before work starts
    England & Wales
    Drawings-based, remote
    Sister brand
    Of Team EPC Ltd
    Exploded section of a building showing insulation, glazing and services assessed for Part L compliance

    Organisations served across the wider Team EPC group

    Audi
    Kia
    Car Giant
    GB News
    Budgens
    Pepe's Piri Piri
    Chicking
    Chaiwalla
    Zoomo
    Northwood
    Audi
    Kia
    Car Giant
    GB News
    Budgens
    Pepe's Piri Piri
    Chicking
    Chaiwalla
    Zoomo
    Northwood

    Accredited and audited

    Elmhurst Energy Approved Energy Assessor and Quality Promise accredited memberECMK accredited energy assessment schemeNFRAR — National Fire Risk Assessors Register listed memberIFSM — Institute of Fire Safety Managers member

    Calculations are produced under accredited schemes, so design-stage and as-built reports are accepted by building control and any on-construction EPC is lodged on the national register and audited under scheme rules. Part L Consultant is a sister brand of Team EPC Ltd.

    When Part L applies

    Start with the building.
    Then map the evidence.

    The route is different for a new home, an extension and a commercial building. Choose the closest project type to see what building control is likely to need.

    House drawings, elevations and sections on a desk beside a laptop showing calculation dataNew dwellingsDesign-stage SAP, BREL reporting and an as-built calculation before the on-construction EPC is lodged.See what applies
    Single-storey rear extension with bifold doors and a roof lantern on a London brick houseExtensionsGlazing-area checks, elemental compliance or a full SAP comparison where the standard allowance is exceeded.See what applies
    Brick and timber barn part-way through conversion into a home, with a new glazed gableConversionsA calculation-led route through a material change of use, including fabric, systems and evidence requirements.See what applies
    New houses under construction with scaffolding and exposed roof trusses on a UK development siteMixed-use schemesCoordinated SAP and SBEM work where homes sit alongside retail, offices or other non-domestic space.See what applies
    Empty modern office floor with exposed ductwork, LED lighting and a fully glazed facadeNon-domestic buildingsDesign and as-built SBEM modelling with BRUKL outputs for building control and EPC production at completion.See what applies

    What we do

    10 Part L services, one accountable team.

    SAP and SBEM calculations, overheating assessments and on-construction EPCs for developers, self-builders, architects and commercial schemes — modelled from your drawings, not guessed at.

    New houses under construction with scaffolding and exposed roof trusses on a UK development siteFor developersPart L compliance for developersThe design-stage model and the as-built close-out are done by the same person, so nothing gets lost between them.From £120
    House drawings, elevations and sections on a desk beside a laptop showing calculation dataDesign stageDesign-stage SAPEach house or flat type modelled once, then applied across plots, with outliers checked individually.From £150
    Blower door fan sealed into the doorway of a newly built house for an air tightness testCompletionAs-built SAPWhere we did the design stage, close-out is a comparison rather than a rebuild.From £150
    Empty modern office floor with exposed ductwork, LED lighting and a fully glazed facadeNon-domesticSBEM and BRUKLActivity zoning drives the result, so we zone from the drawings rather than averaging the building.From £350
    Single-storey rear extension with bifold doors and a roof lantern on a London brick houseExtensionsPart L for extensionsWe tell you whether you actually need a calculation before quoting for one.From Quoted
    Timber frame self-build house under construction with insulation rolls stacked outsideSelf-buildPart L for self-buildersYou get told what each stage is for and what you need to do, in plain terms.From £150
    See all 10 services

    Combined packages

    Design stage and as-built, bundled together.

    Most projects need more than one piece of work. These packages join the design-stage model, the as-built close-out and the certificates into a single scope, with one contact and one invoice.

    UK housing development under construction, with brick houses at several stages and scaffolding along a site roadDeveloper Part L packageEach house type and flat type modelled from your drawings and specification, with the compliance route and the fabric and services assumptions set out in writing before you build.From £120 · per plot, guide only
    Completed new-build brick house with a new front door and driveway, ready for handoverNew build handover packageEach dwelling type re-modelled against what was installed, using your as-built drawings, product data and substitution records.Quoted · per site, guide only
    Single self-build house under construction in open countryside, with architectural drawings on a workbench in frontSelf-build packageYour house modelled from the drawings and specification, with the compliance route written down before you build.£150–£300 · single plot, guide only
    Modern single-storey rear extension under construction with large glazed sliding doors onto a gardenExtension & conversion packageWhether that is an area-weighted comparison for a highly glazed extension or a whole-dwelling calculation, we confirm which applies before starting.Quoted · per project, guide only
    British mixed-use building with shopfront units at ground floor and brick apartments aboveMixed-use packageDesign-stage and as-built calculations for each flat type, plus the on-construction EPC for each dwelling.Quoted · per scheme, guide only
    Empty modern office floor being fitted out, with exposed ductwork, linear LED lighting and a glazed facadeNon-domestic packageThe building modelled from drawings, fabric build-ups and the services strategy, with the compliance position set out before construction.From £350 · guide only
    Compare all 6 packages

    How the work runs

    From drawings
    to sign-off.

    One thread from the first design-stage model through to the as-built close-out, so nothing is rediscovered at handover.

    1. 01

      Send the drawings

      Plans, elevations, sections and the intended specification.

    2. 02

      Fixed written quote

      Priced from what is actually there, before any work starts.

    3. 03

      Design-stage model

      SAP or SBEM built from your build-ups, glazing and services.

    4. 04

      Compliance report

      Issued for building control, with any changes needed set out plainly.

    5. 05

      On site

      Air pressure test and installed spec coordinated as the build progresses.

    6. 06

      As-built close-out

      Final calculation and, on new build, the on-construction EPC.

    See how pricing works

    Complete visibility

    One project record.
    From design to handover.

    We keep the calculation, design queries, revisions and close-out evidence tied to the same project, so the latest position is clear when building control asks.

    SAP & SBEM status Revision history Evidence checklist Final documents

    This is an illustration of how we manage a project. Private records remain accessible only to the delivery team.

    Project workspace

    Example mixed-use development

    Design stage

    Models

    2

    SAP + SBEM

    Latest revision

    P04

    Received 12 Sep

    Overall status

    In review

    2 decisions open

    1. Design reviewDrawings and specification checkedComplete
    2. QueriesOpen decisions kept in one list2 open
    3. RevisionsModel updated as the design developsCurrent
    4. Site evidencePhotographs and test results organisedAwaiting site
    5. As-built close-outFinal BREL or BRUKL and EPC outputsNext

    Free Part L tools

    Get an informed starting point.
    Before you send the drawings.

    Use the fee guide for an indicative band, then open the checker that matches your immediate question. No sign-up or email wall.

    Interactive fee guide
    Your project

    Guide fee

    £150–£300

    Design-stage and as-built SAP, plus the on-construction EPC

    Included

    • Design-stage SAP or SBEM calculation for each dwelling or building type
    • BREL or BRUKL compliance report for your building control body
    • A written specification note saying what has to be built to make the model stand up
    • Reasonable specification queries answered while the design settles
    • As-built calculation and the on-construction EPC where the band says so

    Not included

    • Air pressure testing and sound testing on site
    • Overheating (Part O) assessments, quoted separately
    • Planning-stage energy statements or whole life-cycle carbon reporting
    • Re-modelling after a wholesale design change, quoted as an addition
    • Building control fees and any local authority charges

    Guide prices only. Every project is quoted in writing before work starts, based on the drawings and the number of dwelling types. VAT position confirmed on the quote.

    See the full fee page

    Transition checker

    Enter your building control application date and your start on site, and see whether that building keeps transitional protection under the published 2026 dates.

    Open tool

    Design checklist

    Build a tailored list of the drawings, specification and services information a design-stage SAP or SBEM calculation needs for your project type.

    Open tool

    2021 vs 2026

    A side-by-side of the two standards as published: dates, scope and requirements, with a source against every line and nothing stated that we cannot cite.

    Open tool

    Glazing check

    Enter your extension's floor area, its new glazing and the openings it removes, and see whether it stays inside the 25% allowance or needs a calculation.

    Open tool

    Fee guide

    Pick your project type and scale for the guide fee band we quote from, and what the fee does and does not include. Every job gets a written quote.

    Open tool

    These tools provide guidance only. A full SAP or SBEM calculation is required to confirm Part L compliance.

    Awais Sarwar, founder of Part L Consultant

    Who runs your contract

    Awais Sarwar, MSc — Accredited Energy Assessor

    Awais is an accredited domestic and commercial energy assessor and the owner of Team EPC Ltd, which trades as Part L Consultant. He has surveyed and lodged EPCs across flats, houses, HMOs, managed portfolios and commercial premises throughout London and the Home Counties, and is currently studying an MSc in philosophy alongside running the business.

    EPC Register
    Accredited assessor
    MSc
    Built environment
    MSc Philosophy
    Currently studying
    10+ years
    London property
    Part L focus
    Design to as-built

    Off the clock: cricket, family time, an MSc in philosophy in progress and finding London's best food.

    Awais Sarwar away from work, out in a London park

    Awais Sarwar

    Founder · Accredited energy assessor

    About Awais
    020 3092 8551About Part L Consultant

    Verified reviews of Team EPC

    The same people.
    The same accountable service.

    These verified reviews relate to EPC work delivered by Team EPC, our sister company. They show the communication and professional standards behind the wider team; they are not presented as Part L project reviews.

    4.9
    100+ Google reviews
    4.9
    Trustpilot verified
    Google Review

    "EPC in my inbox within two hours."

    Easy to book: left details on site (it was out of hours) and they called me first thing to schedule the appointment. Lovely service — professional, polite and prompt, and the whole appointment was done in 15 minutes. The EPC was in my inbox within two hours. Would use again!

    CR
    Collette Robinson
    Google Review

    "Certificate within hours of the inspection."

    Very professional service — fast and efficient. I am so impressed. Within a few hours from the inspection I had received my EPC. The rating is fair and I am so pleased. The charge for the service is very good value. I would recommend this service to all my colleagues, friends and neighbours.

    KK
    Kalina Kerestos
    Google Review

    "Attended same day, report back in hours."

    Fast and efficient, able to attend the same day. Friendly and professional, with the report turned around in hours. Highly recommended.

    RC
    Robin Clark
    Google Review

    "Super quick and efficient."

    Super quick and efficient EPC rating done on my property. Good communication. Would recommend!

    EC
    Elise Campbell
    Google Review

    "An excellent assessment, done efficiently."

    An excellent assessment. The service was great and the job was done efficiently. I highly recommend!

    HT
    Harris Tabassam
    Google Review

    "On time, and the EPC arrived exactly as promised."

    Great and friendly service with great communication skills. They arrived at my appointment on time and I received my EPC very quickly, just as promised on the website. Highly recommended to use this company to gain your EPC.

    MM
    M M

    Shared company experience

    Real buildings.
    Relevant experience.

    Selected work delivered by our sister companies, Team EPC and Fire Risk Specialists. Every card names the business responsible; these are not presented as Part L commissions.

    Exterior of Pinnacle Tower in Wembley, London
    Team EPC

    Wembley, London

    Pinnacle Tower

    Delivered by Team EPCBulk domestic EPC programme

    “A tower-wide programme, coordinated as one instruction.”

    A whole tower of apartments assessed floor by floor, with unit types grouped and certificates lodged in coordinated batches.

    • High-rise residential
    • Multiple apartments
    • One programme
    Exterior of City Deal Estates in Central London
    Team EPC

    Central London

    City Deal Estates

    Delivered by Team EPCManaged portfolio energy assessments

    “Period properties reviewed building by building.”

    Period conversions assessed building by building, with construction evidence reviewed and energy-performance risks flagged for the property team.

    • Managed portfolio
    • Period conversions
    • One contact
    Exterior of 1 Harrington Gardens in South Kensington, London
    Fire Risk Specialists

    South Kensington, London

    1 Harrington Gardens

    Delivered by Fire Risk SpecialistsLuxury serviced apartments

    “48 apartments. One coordinated fire risk assessment.”

    A coordinated assessment for a prominent serviced-apartment building, bringing a complex residential operation into one clear fire-safety review.

    • 48 apartments
    • 24-hour report
    • Coordinated scope
    Exterior of Bang Bang Oriental in Colindale, North London
    Fire Risk Specialists

    Colindale, North London

    Bang Bang Oriental

    Delivered by Fire Risk Specialists32,000 sq ft food hall

    “25+ kiosks. High footfall. One rigorous assessment.”

    A comprehensive fire risk assessment across a large, busy food hall with multiple commercial kitchens and complex public circulation.

    • 25+ kiosks
    • 32,000 sq ft
    • 24-hour report
    View all project experience

    FAQ

    Questions,
    answered.

    The questions developers, self-builders and architects ask before instructing us. Anything else — pick up the phone.

    Still curious?

    Awais picks up directly Mon–Fri, 9am–5.30pm. No call centre. No bots.

    020 3092 8551

    What we stand for

    Part L, calculated properly.
    No surprises at handover.

    SAP, SBEM, overheating and on-construction EPCs for developers, self-builders and architects across England and Wales — a sister brand of Team EPC Ltd.

    Speak to an assessor

    What we do

    Part L work by
    project type.

    New dwellings, extensions, conversions and non-domestic buildings each take a different route through Part L.

    All services and guide fees

    Orientation

    Work out where you
    stand.

    Short guidance tools for the 2026 transition, design-stage evidence and typical fees. They point you to the right process — they do not produce a compliance result.

    Knowledge

    Part L
    guides.

    Plain-English answers to the questions developers, self-builders and architects actually ask, with sources cited.

    Part L 2026 explained: the Future Homes and Buildings Standards

    What the 2026 edition of Approved Document L actually changes, when each part bites, and what it means for schemes being designed now.

    11 min read

    Part L transitional arrangements: which standard applies to your build

    The transitional rules decide whether a plot is assessed under Part L 2021 or Part L 2026. They apply building by building — and that catches people out.

    9 min read

    SAP calculations explained: design stage to as-built

    What a SAP calculation actually tests, what your assessor needs from the drawings, and how the design-stage submission connects to sign-off.

    12 min read

    SBEM calculations and BRUKL reports explained

    The non-domestic side of Part L: what SBEM models, what a BRUKL report shows, and what building control expects at each stage.

    10 min read

    As-built Part L: the evidence pack building control expects

    The evidence that turns a finished plot into a signed-off plot — and the site habits that stop it becoming a scramble at hand-over.

    9 min read

    Part L for extensions: the glazing allowance and how compliance works

    Why a glazed rear extension often needs a calculation, how the 25% allowance is worked out, and what your options are when the design goes past it.

    8 min read
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    The short answer

    Part L Consultant produces SAP and SBEM calculations, overheating assessments and on-construction EPCs for new build, extension, conversion and non-domestic projects across England and Wales. Work is modelled from your drawings and specification at design stage, then updated to the as-built position at completion. Guide prices start from £150 for a single plot and from £350 for non-domestic SBEM, with a fixed written quote issued before any work starts. Part L Consultant is a sister brand of Team EPC Ltd.

    020 3092 8551
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