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pattern","px-7","border-b",{"name":16,"componentName":17,"cols":18,"colsMD":19,"customColSpan":20,"parentAlign":21,"bgImage":9,"inlineStyles":9,"bgColor":9,"group":23,"margin":9,"padding":9,"classes":9,"colSpan":9,"id":75,"originalModel":76,"borderWidth":9,"borderColor":9,"borderRadius":9,"sticky":20,"stickyTop":65,"stickyDisableSmall":20,"paddingVertical":90,"borderPosition":9,"paddingHorizontal":91},"0634e860-5bb2-42de-aa57-b2272d325b7a",[77],[78,80],{"id":79,"colSpan":29,"colSpanSM":30,"colSpanMD":31,"colSpanLG":32,"customColSpan":20,"bgColor":9,"borderWidth":9,"borderColor":9,"borderRadius":9,"classes":9,"borderPosition":9},"769b7f36-06b0-4bcc-9fc7-b1935051d677",{"name":35,"componentName":17,"nested":13,"cols":18,"colsMD":19,"customColSpan":20,"parentAlign":21,"bgImage":9,"inlineStyles":9,"bgColor":9,"group":36,"margin":9,"padding":9,"classes":9,"colSpan":9,"id":81,"originalModel":82,"borderWidth":9,"borderColor":9,"borderRadius":9,"sticky":20,"stickyTop":65,"stickyDisableSmall":20,"containerWidth":64,"borderPosition":9},"e7c2eabd-f877-467a-89f0-aa8ef8b7f411",[83],[84,86],{"id":85,"colSpan":29,"colSpanSM":30,"colSpanMD":31,"colSpanLG":32,"customColSpan":20,"bgColor":9,"borderWidth":9,"borderColor":9,"borderRadius":9,"classes":9,"borderPosition":9},"c37da2da-dc4c-4238-938b-031fe5501f7d",{"name":46,"componentName":47,"group":48,"margin":9,"padding":9,"classes":9,"bgImage":9,"id":87,"originalModel":88},"30243da6-e294-4dbe-9226-f959bbb2a3d8",{"proseEnabled":13,"content":89,"lineHeightClass":52,"trackingClass":53,"spacingClass":54},"\u003Cdiv>\n\u003Ch2>\u003Cstrong>The Result\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>A housing phase had strong design‑stage SAP outputs, but as handover approached, the contractor faced the familiar challenge: \u003Cstrong>the as‑built reality didn’t match the design assumptions perfectly\u003C\u002Fstrong>.\u003Cbr>ATSPACE managed the transition from \u003Cem>as designed\u003C\u002Fem> to \u003Cem>as built\u003C\u002Fem> SAP by capturing evidence early, updating SAP inputs plot by plot, and resolving inconsistencies before they caused delays.\u003Cbr>The project closed the compliance gap cleanly and supported smooth \u003Cstrong>Part L sign‑off at handover\u003C\u002Fstrong>.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>Project Snapshot\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>\u003Cstrong>Service:\u003C\u002Fstrong> SAP calculations + as‑built updates\u003Cbr>\u003Cstrong>Client:\u003C\u002Fstrong> Main contractor (mixed‑tenure housing scheme)\u003Cbr>\u003Cstrong>Site:\u003C\u002Fstrong> Meadowbrook Rise, Phase 2, Plots 51–74, 1–24 Clover Lane, Bedford MK41 7PN\u003Cbr>\u003Cstrong>Development:\u003C\u002Fstrong> 24 homes (detached + semi‑detached)\u003Cbr>\u003Cstrong>Programme stage:\u003C\u002Fstrong> Handover and completion packs\u003Cbr>\u003Cstrong>Compliance driver:\u003C\u002Fstrong> Building Regulations Part L as‑built evidence\u003Cbr>\u003Cstrong>ATSPACE delivery:\u003C\u002Fstrong> As‑designed SAP review, as‑built evidence capture, plot‑level SAP updates, airtightness integration, handover‑ready outputs\u003Cbr>\u003Cstrong>Team:\u003C\u002Fstrong> ATSPACE SAP assessor team + compliance coordinator\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>Why the As Designed → As Built Gap Happens\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>Even on well‑run sites, drift is normal:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>procurement substitutions\u003C\u002Fli>\n\u003Cli>installer preferences for controls or fans\u003C\u002Fli>\n\u003Cli>lighting specification changes\u003C\u002Fli>\n\u003Cli>PV variations due to roof constraints\u003C\u002Fli>\n\u003Cli>airtightness results differing from design targets\u003C\u002Fli>\n\u003Cli>documentation mismatched to what was installed\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>The issue isn’t that changes happen — the issue is when they’re not captured until the last minute.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>What ATSPACE Was Asked To Do\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>The contractor needed a controlled close‑out process:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>review as‑designed SAP assumptions and identify drift risks\u003C\u002Fli>\n\u003Cli>capture as‑built evidence consistently\u003C\u002Fli>\n\u003Cli>update SAP inputs plot by plot with a clear audit trail\u003C\u002Fli>\n\u003Cli>integrate airtightness results quickly\u003C\u002Fli>\n\u003Cli>issue handover‑ready outputs to support Part L sign‑off\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>What ATSPACE Did\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Ch3>\u003Cstrong>Step 1: Identify likely drift points early\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We reviewed the house types and flagged high‑risk areas:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>heating system controls\u003C\u002Fli>\n\u003Cli>ventilation strategy + fan models\u003C\u002Fli>\n\u003Cli>PV provision + inverters\u003C\u002Fli>\n\u003Cli>glazing specifications\u003C\u002Fli>\n\u003Cli>lighting variations\u003C\u002Fli>\n\u003Cli>airtightness assumptions vs testing reality\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>This made the evidence capture focused and efficient.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>Step 2: Build a simple evidence pack per plot type\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>A repeatable template reduced admin and avoided email chains.\u003C\u002Fp>\n\u003Cp>Evidence included:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>heating system + controls\u003C\u002Fli>\n\u003Cli>ventilation strategy + fan data\u003C\u002Fli>\n\u003Cli>PV installation confirmation\u003C\u002Fli>\n\u003Cli>glazing performance\u003C\u002Fli>\n\u003Cli>airtightness test results\u003C\u002Fli>\n\u003Cli>substitution logs and plot‑specific variations\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3>\u003Cstrong>Step 3: Update as‑built SAP in line with completions\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We updated plots progressively rather than waiting for a batch update at the end.\u003Cbr>This prevented bottlenecks and kept compliance stable.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>Step 4: Deal with exceptions properly\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>Where a plot differed from the house‑type model, we:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>recorded it clearly\u003C\u002Fli>\n\u003Cli>reflected differences in that plot’s SAP\u003C\u002Fli>\n\u003Cli>ensured no dwelling relied on generic assumptions\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3>\u003Cstrong>Step 5: Provide clear close‑out notes for the compliance file\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>Delivered handover‑ready Part L outputs with:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>key assumptions\u003C\u002Fli>\n\u003Cli>evidence references\u003C\u002Fli>\n\u003Cli>confirmation of plot‑specific variations\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>No ambiguity for future audits or warranty providers.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>Problems Faced — and How They Were Solved\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Ch3>\u003Cstrong>Problem 1: Airtightness results differed from assumptions\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>\u003Cstrong>Fix:\u003C\u002Fstrong> Updated SAP immediately and flagged risk areas early. Provided practical tips to prevent drift on remaining plots.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>Problem 2: Controls evidence inconsistent\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>\u003Cstrong>Fix:\u003C\u002Fstrong> Standardised evidence requirements and captured them once per plot type, recording exceptions clearly.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>Problem 3: PV provision varied by roof constraints\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>\u003Cstrong>Fix:\u003C\u002Fstrong> Reflected PV provision plot by plot and maintained compliance with transparent assumptions.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>Outcome\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>The scheme closed the as‑designed → as‑built SAP gap \u003Cstrong>without handover delays\u003C\u002Fstrong>.\u003C\u002Fp>\n\u003Cp>Project outcomes:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>as‑built SAP outputs aligned to real installations\u003C\u002Fli>\n\u003Cli>fewer last‑minute queries\u003C\u002Fli>\n\u003Cli>clean completion evidence packs\u003C\u002Fli>\n\u003Cli>improved confidence in Part L sign‑off\u003C\u002Fli>\n\u003Cli>workflow adopted for future phases\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>Common Mistakes This Project Avoided\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cul>\n\u003Cli>treating as‑built SAP as a last‑minute admin task\u003C\u002Fli>\n\u003Cli>applying generic assumptions across all plots\u003C\u002Fli>\n\u003Cli>waiting for airtightness before starting as‑built updates\u003C\u002Fli>\n\u003Cli>relying on undocumented control assumptions\u003C\u002Fli>\n\u003Cli>discovering compliance drift only after handover dates were fixed\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>CTA\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>If you want a smoother route to Part L sign‑off, ATSPACE will manage the move from \u003Cstrong>as designed\u003C\u002Fstrong> to \u003Cstrong>as built\u003C\u002Fstrong> SAP properly, capture the right evidence, and issue handover‑ready outputs with no last‑minute chasing.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Ask for:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n\u003Cli>as‑built SAP updates + plot tracking\u003C\u002Fli>\n\u003Cli>usable evidence‑capture templates for site teams\u003C\u002Fli>\n\u003Cli>SAP support aligned to rolling handovers\u003C\u002Fli>\n\u003Cli>compliance close‑out support when results drift or specs change\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>Frequently Asked Questions\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>\u003Cstrong>Why do as‑built SAP updates take longer than expected?\u003C\u002Fstrong>\u003Cbr>Because evidence is missing or substitutions aren’t logged. 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