Fast, accurate, and compliant — so your build schedule never stops.
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On Time — Every Time
Clear, upfront pricing for every service. No hidden fees, no surprises.
Compliance for glazed extensions and upgrades. Fast, practical reports to meet Part L requirements.
Part L assessments for new builds, change-of-use, barn conversions, and major refurbishments. Expert guidance from design to Building Control sign-off.
EPCs for sales, lettings, or completion packs. Fast, professional assessments with clear improvement advice.
Part G water efficiency calculations for residential developments. Quick compliance checks for Building Control.
Part O simplified method assessment for overheating risk. Quick compliance checks for standard residential projects.
Full dynamic thermal modelling to CIBSE TM59 standards. Essential for complex builds, planning requirements, or detailed overheating analysis.
Reports delivered in one week to keep build programmes moving and avoid costly project delays.
Transparent pricing with no hidden fees, no add-ons, and no re-quotes — total cost certainty from the start.
Every report includes SwiftScore™ — a unique score that turns complex data into clear insight, showing energy efficiency, overheating risk, and optimisation potential. This helps you make smarter, compliant design decisions. Add overheating or water analysis for even greater accuracy.
Focused exclusively on residential compliance for 1–15 unit projects, with over 7 years of experience in the UK housing sector.
Speak directly with a qualified Elmhurst assessor who understands your project — not a call centre or admin team.
Ideal for developers and air-testing companies seeking a dependable long-term compliance partner who helps keep projects on track.
Initial SAP fail due to high U-values; passed after insulation redesign.
Two-unit conversion of an existing office building into flats in South Yorkshire.
Initial SAP assessment failed to meet Part L targets.
U-values for walls, roof, and floor exceeded limits because of insufficient insulation thickness and product specification.
Both units achieved Part L compliance with a comfortable margin.
Total turnaround time: one week from revised specification submission.
Project type: Conversion / change of use (demonstration example)
Software: DesignBuilder / SAP 10.2
Accreditation: Elmhurst OCDEA
"This demonstration example illustrates SwiftSap's workflow and problem-solving process."
TM59 Overheating fail resolved with solar glazing and MVHR solution.
Three-unit new-build residential development with large south-facing glazing and compact bedroom layouts.
TM59 overheating analysis showed non-compliance: bedrooms and kitchen–living rooms exceeded temperature limits under typical summer conditions.
All spaces achieved TM59 compliance; annual hours of overheating reduced below threshold.
Total turnaround time: one week from design update.
Project type: New-build residential (demonstration example)
Software: DesignBuilder / TM59 method
Accreditation: Elmhurst Overheating Assessor
"This demonstration example illustrates SwiftSap's reporting style and resolution approach."
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