A 2,800m² build-to-suit retail park unit for a national homewares brand on a developer plot in Croydon, South London — steel-portal-frame on a 7m clear retail floor, 320m² integrated mezzanine offices above the back-of-house, 18m unitised curtain-wall shopfront glazing in low-iron glass with twin automated entrance doors, a 92-space customer car park with 14 EV charging bays on a dedicated DNO supply, and full Cat-A shell handover to the tenant's national fit-out contractor. Twelve-month programme delivered against fixed price to the tenant's published landlord-build specification, with BREEAM Very Good achieved at 64.2% as a planning condition. Tenant trading on the contracted store-opening date.
A South-East commercial property developer with a long track record of build-to-suit retail park schemes commissioned a 2,800m² new-build unit on a 1.1-hectare developer plot within an established Croydon retail park. The unit was pre-let to a major national homewares retailer on a fifteen-year lease signed at planning stage. The brief was build-to-suit against the tenant's published "Landlord Build" specification document — a 47-page brand standard governing column grid, retail-floor flatness, mezzanine load capacity, shopfront height and width, back-of-house ratios, plant-compound location, sprinkler density, signage frame positions and brand-mandated sustainability targets. Programme contractually fixed at twelve months from possession of site, with practical completion dovetailed against the tenant's national fit-out contractor mobilising six weeks before PC and a published store-opening date in the tenant's year-ahead trading plan.
We were one of three contractors invited to tender. Our bid came in second on price by approximately £31,000 against the leading offer. We won the work because our methodology document was the only one to (a) adopt the tenant's "Landlord Build" specification verbatim into the contract sum without interpreting any clause as discretionary, (b) cost the 18m unitised curtain-wall shopfront glazing as a specialist long-lead sub-contract with the order placed at week one against a 12-week supplier lead time, and (c) treat the customer car park with 14 EV charging bays as a parallel workstream from month four onwards rather than as a month-eleven catch-up activity. The third reason carried more weight than the first two combined: every retail park bid Croydon Council had seen in the previous twelve months had treated the EV charging bays as a checkbox; the developer's planning consultant confirmed in their post-appointment debrief that our EV charging methodology document was what tipped the appointment.
Practical completion was certified on the contracted date. The tenant's national fit-out contractor was on site from week six pre-PC under a contractually-defined Landlord-Tenant Interface Document, completed their Cat-B fit-out in the four weeks following PC, and the tenant traded on the contracted store-opening date with no slippage attributable to landlord works. BREEAM Very Good achieved at 64.2% scoring against a 55% planning-condition threshold. Section 106 obligations to local highway and pedestrian works settled in full at handover.
The brief came from the developer's Property Director and the developer's quantity surveyor jointly, working against the homewares retailer's published Landlord Build specification document. Priorities, in their stated order:
A build-to-suit retail unit for a national pre-let tenant is a different discipline from a speculative warehouse. Every dimension is set by the tenant's published landlord-build specification, every long-lead specialist item has a brand-mandated supplier list, and the programme is locked to a store-opening date that has been signed off by the tenant's board twelve months in advance. Every constraint had a workaround that had to be planned before the topsoil came off.
The tenant's published Landlord Build document was 47 pages of brand standards: column grid, retail floor flatness, ceiling height, mezzanine loadings, shopfront mullion spacing, signage frame positions, plant compound dimensions, sprinkler density, EV charging ratio, daylight linking, even the brand-specified manufacturer for the automated entrance doors. We adopted the document verbatim into the contract sum without interpreting any clause as discretionary. Pre-PC walkdown by the tenant's surveyor against the published spec: every line item closed-out clean, no requests for variation either way.
Shopfront glazing on a build-to-suit retail unit is the single most visible long-lead specialist item. 18m of unitised curtain-wall in low-iron toughened laminated glass, brand-specified mullion grid, twin automated entrance doors and signage frames preset for the brand's fascia and apex logo. 12-week supplier lead time placed in week one against survey-and-template drawings rather than waiting for the steel to be up. Glazing arrived month 8, installed weeks 32-33, automated entrance door commissioning week 34. No tolerance failure; brand sign-off on the shopfront in week 35.
Most retail park bids treat EV charging as a checkbox on the BREEAM credit. A retail park unit with 14 EV charging bays needs a dedicated DNO supply, bay-side feeder pillars rated for the brand's chosen unit (22kW AC fast chargers in this case), an RFID-and-contactless billing integration to a Charge Point Management System back-office, weatherproof cabling routed under the car park sub-base, and operational testing of all 14 bays against the brand's mystery-shopper checklist. We costed and sequenced the EV charging as a parallel workstream from month four onwards. All 14 bays operational at PC; no commissioning items on the snag list.
The tenant's national fit-out contractor mobilised on site at week 46 (six weeks before PC) under a contractually-defined Landlord-Tenant Interface Document. Their racking installer was on the retail floor before our snagging walkthrough. Their EPOS and merchandising teams were specifying their own first-fix while we were finishing ours. Dual-presence period was managed against a daily 7:30am coordination meeting, a shared CDM site induction, a defined services handover protocol for live electrical and sprinkler systems, and a single point-of-contact on each side. Tenant Cat-B fit-out completed cleanly in the four weeks post-PC.
Croydon Council's planning consent carried 23 conditions, of which 11 were pre-commencement. Section 106 contributions covered local highway works, pedestrian crossing improvements at the retail park access, a contribution to the borough's cycling infrastructure programme, and a transport assessment monitoring obligation. We treated the conditions discharge schedule and the S106 obligations as a single workstream owned by a named planning liaison from our team. Eleven pre-commencement conditions discharged in writing across month one. Twelve pre-occupation conditions all discharged before PC. S106 settled in full at handover.
The tenant's store-opening date had been published in their year-ahead trading plan and signed off by their board nine months before our site possession. Liquidated damages on a missed trading date for a national homewares retailer on a flagship Croydon site run into low six figures per trading day. We held a fourteen-day weather contingency on the steel erection programme and a three-week float on the M&E commissioning critical path, both as fixed programme float rather than hopeful overrun. Steel-up complete on the contracted month-4 milestone. M&E commissioning on the contracted month-10 milestone. Tenant trading on the contracted opening date.
Build-to-suit retail succeeds or fails on the discipline of the brand spec, the long-lead specialist items, the customer car park workstream and the tenant fit-out interface. Our approach was built around four governance disciplines and one programme discipline.
Tenant brand spec adopted verbatim, not interpreted. The two competing tenders flagged eight of the 47 Landlord Build clauses as "subject to value engineering" or "to be confirmed against detailed design". We adopted the document verbatim. The tenant's surveyor confirmed in their pre-PC walkdown that this was the cleanest brand-spec compliance walk they had logged in eighteen months of audited landlord builds; the developer's Property Director confirmed in their stage-two appointment letter that this was the single largest reason we were appointed.
Long-lead specialist items ordered week one. The shopfront glazing (12-week lead time), the brand-specified automated entrance doors (10-week lead time), the dock leveller and shelter (8-week lead time) and the 14 EV charging unit hardware (14-week lead time including DNO commissioning) were all ordered in week one against survey-and-template drawings rather than waiting for the steel to be up. None of the four specialist packages slipped on lead time. Shopfront installed weeks 32-33, EV chargers commissioned weeks 44-45.
Customer car park as a parallel workstream from month four. Retail bids commonly treat the customer car park as a finishing-trades activity in months 11-12. On a 92-space car park with 14 EV charging bays on a dedicated DNO supply, that approach guarantees DNO commissioning slippage past PC. We sequenced the car park sub-base from month four, the EV charging cable runs and feeder pillars from month seven, the DNO connection in month nine, the asphalt top-coat in month ten, and the EV charger commissioning in month eleven. All 14 bays operational at PC.
Tenant fit-out interface as a contractual workstream. The tenant's national fit-out contractor mobilised at week 46 (six weeks pre-PC) under a Landlord-Tenant Interface Document negotiated and signed off jointly by us, the developer's QS and the tenant's project director in month nine. The Document defined: shared site induction protocols, daily 7:30am coordination, services handover sequence for live electrics and sprinklers, dual-CDM responsibilities, snagging interface for landlord-vs-tenant scope items. Zero interface disputes raised; tenant Cat-B fit-out completed in four weeks post-PC.
Programme float held as fixed, not hopeful. The steel erection programme carried 14 calendar days of weather contingency held as fixed float on the master programme (the same approach as the Wakefield Distribution Warehouse). M&E commissioning carried a three-week float on the critical path. Long-lead specialist items each carried a contracted delivery window with a contractual penalty for slippage. None of the fixed floats was consumed. The tenant traded on the contracted store-opening date.
Two hundred and fifty working days from possession of site to practical completion. A planning-conditions-led mobilisation, four parallel long-lead specialist packages ordered in week one, a customer car park sequenced from month four, a tenant fit-out contractor mobilising six weeks pre-PC, and a tenant trading on the contracted store-opening date.
Site possession, welfare cabin compound and material storage area established on the eastern boundary of the developer plot. Eleven pre-commencement planning conditions discharged in writing across the first three weeks: ecology survey sign-off, archaeology desk-based assessment, contaminated land Phase 1 desk study, transport assessment monitoring obligation, surface water drainage strategy, construction logistics plan, dust and noise management plan. Section 106 obligations registered. CDM Principal Contractor handover, F10 notification submitted. Long-lead specialist orders placed against survey-and-template drawings: shopfront curtain wall (12 weeks), automated entrance doors (10 weeks), dock leveller (8 weeks), EV charging unit hardware (14 weeks including DNO commissioning).
Bulk earthworks across the platform: 9,200m³ of cut-and-fill within the consented envelope. Foul and surface water drainage to the boundary: 320m of foul to the public sewer connection, 410m of surface water to the cellular attenuation tank position. Cellular attenuation tank installed under the future customer car park footprint with concrete protection slab over. Oil interceptor installed on the car park drainage outfall. DNO supply trench excavated for the dedicated EV charging supply.
CFA piling sub-contractor mobilised week one of month three. 96 piles at 450mm diameter to 12m depth into the London Clay bearing stratum, completed across 14 working days. Independent pile integrity testing on 10 piles (10% sample) by a UKAS-accredited test house: all 10 within tolerance, no defects logged. Reinforced concrete ground beams cast on the pile heads to tie the foundation grid for the portal frame bases and the mezzanine support columns. Slab sub-base laid and compacted.
Steel sub-contractor mobilised on a fixed sequence: 9 single-span 16m portal frames at 9m centres (brand-specified retail merchandising grid), gable-end frames, eaves beams, secondary purlins, gable-frame and longitudinal bracing, mezzanine support steel for the 320m² office floor at the rear. 14 calendar days of weather contingency held as fixed float; three shifts lost to high winds, all absorbed without consuming critical-path float. Steel-up complete on the contracted month-4 milestone. Independent steelwork inspection by a third-party engineer pre-cladding: zero non-conformances logged. Customer car park sub-base laid in parallel across the 92-space footprint, EV charging bay positions pre-marked.
Composite roofing system installed: 120mm PIR-cored composite panels on standing-seam profile, 12% rooflight area in twin-skin GRP rooflights for daylight-linked retail lighting, motorised smoke vents to fire strategy. Wall cladding: 120mm PIR-cored insulated composite panels on the rear and side elevations, brand-specified architectural-finish panels on the visible portions of the front elevation, full air-tightness detailing. Shopfront opening framed and ready for the unitised curtain-wall delivery in month 8. Building weather-tight (excluding shopfront) by end of month five.
Single laser-screeded ground-bearing retail floor slab, 175mm thickness on a 1200-gauge polythene damp-proof membrane on a 50mm sand blinding on the compacted Type-1 sub-base. Power-trowelling sequenced at 6, 12 and 18 hours post-pour with three trowel rigs working in parallel. Single-pour strategy on a single 12-hour shift with two concrete pumps and a continuous truck-line. Mezzanine steel deck floor installed across the 320m² back-of-house mezzanine, BS 5395-compliant access stair erected, mezzanine balustrade and edge protection fitted.
Independent retail floor flatness test in week one of month seven by a UKAS-accredited floor specialist: tested to the brand's published landlord-build flatness specification (between FM2 and SR2 in TR34 terms), 12 of 12 panels passed first-time, mean FF 36.8 against target FF 35. Mezzanine floor finish laid. M&E first fix throughout: incoming three-phase supply terminated, distribution boards set, busbar rising main run, daylight-linked LED retail lighting cable runs, sprinkler primary pipework. EV charging cable runs laid under the car park sub-base ahead of asphalt overlay.
18m of unitised curtain-wall shopfront delivered week one of month eight. Installation across weeks 31-33: panels craned in to the brand-specified mullion grid, low-iron toughened laminated glass, twin automated entrance doors set in their frames, signage frames preset for the brand's fascia and apex logo. ESFR sprinkler first-fix designed for the homewares retailer's published storage class and rack-aisle configuration: primary network installed, sprinkler heads to be terminated post tenant racking install. Brand surveyor pre-walkdown of the shopfront frame and signage positions Friday of week 33: zero items raised.
Landlord-Tenant Interface Document negotiated and signed by us, the developer's QS and the tenant's project director in week three of month nine. Document defines: shared site induction protocols, daily 7:30am coordination meetings, services handover sequence for live electrics and sprinklers, dual-CDM responsibilities, snagging interface scope. DNO connection energised for the dedicated EV charging supply, meter cabinet commissioned. Customer car park asphalt sub-coat laid; bay-side feeder pillars installed at the 14 EV charging bay positions on dedicated cable runs.
M&E commissioning across the unit: daylight-linked LED retail lighting calibrated against the rooflight zones, mezzanine office services energised, automated entrance doors commissioned with brand-mandated proximity-sensor timing, sprinkler primary network witness-tested by FM Global, plant compound services connected. Customer car park asphalt top-coat laid across the 92-space footprint, line-marked for general bays, accessible bays, parent-and-child bays, EV charging bays and the dock approach. Plant compound concrete plinth cast and fenced. ESFR sprinkler witness test passed first-time.
14 EV charging units installed at the bay-side feeder pillars in week one of month eleven. RFID-and-contactless billing integrated with the brand-specified Charge Point Management System back-office. All 14 bays commissioned and tested through the brand's mystery-shopper checklist on the Friday of week three: 14/14 operational. Tenant's national fit-out contractor mobilised in week three of month eleven (six weeks pre-PC). Daily 7:30am coordination meetings commenced. First-pass snagging walkthrough by the developer's QS Friday of week four.
Final snag round in week one of month twelve: 53 items closed by end of week two. Air-permeability test on the envelope: result 4.6 m³/(h.m²) at 50Pa against a contracted target of less than 5.0. BREEAM assessment by the developer's appointed BRE assessor in week three: 64.2% scoring achieved against contracted 55% planning-condition threshold (Very Good). Brand walkdown by the tenant's surveyor against the published Landlord Build specification: zero non-compliances logged. Practical completion certificate issued on the contracted date. Tenant Cat-B fit-out continued in the four weeks post-PC; tenant traded on the contracted store-opening date.
The technical detail behind a 2,800m² build-to-suit retail park unit built to a national homewares brand's published landlord-build specification, with 18m of unitised curtain-wall shopfront, 14 commissioned EV charging bays and a clean Cat-A handover to the tenant's national fit-out contractor.
96 continuous flight auger piles at 450mm diameter to 12m depth into the London Clay bearing stratum, with reinforced concrete ground beams tying the pile heads. Independent pile integrity testing on a 10% representative sample (10 piles): all within tolerance. Foundation cost certainty achieved at fixed price within contract sum.
175mm thickness ground-bearing slab on 1200-gauge DPM on 50mm sand blinding on compacted Type-1 sub-base. Single laser-screeded pour across the full retail floor on a 12-hour shift, power-trowelled at 6, 12 and 18 hours post-pour. Independent UKAS-accredited test to brand-published landlord-build flatness specification: 12/12 panels first-time pass, mean FF 36.8 vs FF 35 target.
9 single-span 16m portal frames at 9m centres on the brand-specified retail merchandising grid, 7m clear retail floor height, 8.5m to apex. Secondary purlins on 1.5m centres. Gable-end frames, eaves beams, longitudinal and gable-frame bracing to current Eurocode wind loadings. Mezzanine support steel integrated. All steelwork to BS EN 1090 execution class EXC2.
Walls: 120mm PIR-cored insulated composite panels on rear and side elevations, brand-specified architectural-finish panels on visible front-elevation portions. Roof: 120mm PIR-cored composite roofing system on standing-seam profile, 12% rooflight area in twin-skin GRP rooflights, motorised smoke vents to fire strategy. Air-permeability test result: 4.6 m³/(h.m²) at 50Pa against target less than 5.0.
18m of unitised curtain-wall in low-iron toughened laminated glass, brand-specified mullion grid, twin sliding automated entrance doors with brand-mandated proximity-sensor timing, signage frames preset for the brand's standard fascia and apex logo positions. 12-week supplier lead time placed week one. Installed weeks 32-33, commissioned week 34. Brand sign-off week 35.
Steel-deck mezzanine floor at the rear of the unit supported off the portal frame, 320m² on a single level. Brand-specified live load 5.0kN/m² storage and 4.0kN/m² office. BS 5395-compliant access stair plus a goods lift to brand specification. Office shell handed over to tenant for Cat-B fit-out under separate tenant contract.
One dock-level bay at the rear of the unit with a Hormann HLT 2-50 hydraulic dock leveller (2,000mm operating range), three-sided telescopic dock shelter, knee bumpers, dock lights, tenant-ready dock-lock provision. Plus one ground-level access door (5m wide x 5m high) for tenant deliveries and waste. Concrete-paved dock approach.
92-space customer car park including 6 accessible spaces and 4 parent-and-child spaces to brand standard. Heavy-duty asphalt overlay on a fully-bound base course, line-marked for general bays, accessible bays, parent-and-child bays, EV charging bays and dock approach. Lighting to BS 5489-1, full CCTV mast-points pre-cabled.
14 EV charging bays at 15.2% of total parking provision, exceeding planning condition. 22kW AC fast charger units at bay-side feeder pillars on a dedicated DNO supply via a separate meter cabinet. RFID-and-contactless billing integrated with brand-specified Charge Point Management System back-office. All 14 bays commissioned and tested through brand's mystery-shopper checklist; 14/14 operational at PC.
ESFR (Early Suppression Fast Response) sprinkler system designed for the homewares retailer's published storage class and rack-aisle configuration. FM Global witness test passed first-time on primary network in month 10. Sprinkler heads terminated post tenant racking install. Smoke detection and alarm to BS 5839 Part 1 Category L1, motorised roof smoke vents.
BREEAM Very Good achieved at 64.2% scoring against contracted 55% planning-condition threshold. PV-ready roof structure (panel weights and electrical infrastructure provisioned for future install), 14 EV charging bays at 15.2% of parking, daylight-linked LED retail lighting tied to rooflight zones, embodied-carbon study to RICS Whole Life Carbon Assessment. Air-permeability 4.6 m³/(h.m²).
Cat-A landlord shell handed over to the tenant's national fit-out contractor under a contractually-defined Landlord-Tenant Interface Document. Tenant fit-out contractor mobilised week 46 (six weeks pre-PC) under shared site induction, daily 7:30am coordination, defined services handover protocol. Tenant Cat-B fit-out completed in four weeks post-PC. Zero interface disputes raised across the dual-presence period.
A 2,800m² build-to-suit retail park unit on a developer plot in Croydon delivered against a 12-month fixed-price contract with no variation orders, the steel-up milestone hit on the contracted month-4 date, every one of 12 floor flatness panels passing first-time at the brand's published landlord-build specification, every one of 10 pile integrity tests within tolerance, all 14 EV charging bays commissioned and tested through the brand's mystery-shopper checklist before practical completion, the BREEAM Very Good planning condition exceeded at 64.2% against a 55% threshold, the tenant's brand-spec walkdown closing zero non-compliances, and the tenant trading on the contracted store-opening date.
The Landlord-Tenant Interface Document was the cleanest piece of paperwork on the project. Negotiated and signed in month nine by us, the developer's QS and the tenant's project director, it governed the six-week dual-presence period from week 46 to PC and the four weeks of post-PC tenant Cat-B fit-out. Daily 7:30am coordination meetings, shared site induction, defined services handover. Zero interface disputes. The tenant's national fit-out contractor's project director confirmed at handover that this was the cleanest landlord-side shell they had inherited in their previous twelve build-to-suit handovers nationally. The Wakefield Distribution Warehouse we delivered earlier in the year was a single big-shed for a 3PL tenant who needed FM2 floor flatness on day one of trading; the Knowsley Light Industrial Estate was six small B2/B8 units for a developer running a phased speculative model. This was the same methodology applied to a build-to-suit retail unit for a national pre-let tenant whose store-opening date had been published nine months before our site possession.
We are a South-East commercial property developer with twenty-five years of build-to-suit retail park schemes behind us. Croydon was a pre-let to a major national homewares brand on a fifteen-year lease signed at planning stage, with the tenant's store-opening date published in their year-ahead trading plan and signed off by their board nine months before our site possession. We tendered three contractors on the build. Building Group came in second on price by thirty-one thousand pounds. We appointed them because their methodology document was the only one to adopt the tenant's forty-seven-page Landlord Build specification verbatim into the contract sum without flagging clauses as discretionary, the only one to order all four long-lead specialist packages in week one against survey-and-template drawings, the only one to treat the customer car park and the fourteen EV charging bays as a parallel workstream from month four rather than a finishing-trades activity in months eleven and twelve, and the only one to draft a Landlord-Tenant Interface Document in advance of the tenant's national fit-out contractor mobilising. Twelve months later we had a building with zero items on the brand-spec walkdown, all fourteen EV charging bays operational and tested at practical completion, BREEAM Very Good at sixty-four point two per cent against a fifty-five per cent planning threshold, and the tenant trading on their published opening date with no slippage attributable to landlord works. The tenant's national fit-out contractor's project director told us it was the cleanest landlord shell they had inherited in twelve build-to-suit handovers across the country. We have already appointed Building Group on a second build-to-suit scheme for the same tenant.
If you're a developer with a pre-let in hand, an investor with a build-to-suit instruction from a national brand, or a retailer needing a flagship landlord-build delivered to your published specification and your trading-date programme, we'll come out for a free site visit, walk the brand's Landlord Build document and the planning conditions with your property director and your quantity surveyor, and put a fixed-price methodology document on your desk — with the long-lead specialist items, the customer car park, the EV charging infrastructure, the BREEAM scoring strategy and the Landlord-Tenant Interface protocol all costed in.
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