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Case Study · Owner-Operator Retail

Solihull Standalone Retail Store

A 1,200m² standalone new-build retail store for a regional electricals retailer on a 0.6-hectare freehold plot in Solihull, West Midlands — brick-slip-clad steel-portal-frame on a 5m clear retail floor responding to the suburban planning context, 180m² integrated mezzanine with full staff facilities (kitchen, lockers, training room, manager's office, WCs), 8m of shopfront glazing with a covered accessible entry canopy, a secure stock receiving area for high-value electricals stock, and a 32-space customer parking forecourt with 4 EV charging bays. Eight-month programme delivered against fixed price for an owner-operator client. Store trading on the contracted opening date, timed to the retailer's peak summer trading window.

Solihull, West Midlands 8 months £1.1M fixed price 1,200 m² / 32 parking
1,200 m²GIA
8 mnBuild Duration
£1.1MFixed Price
32Parking Spaces
Day 1Trading on Date

Project Overview

A regional electricals retailer with an established small chain of stores across the Midlands and North-West commissioned a 1,200m² new flagship standalone store on a 0.6-hectare freehold plot they had purchased on an arterial road in Solihull, West Midlands. The retailer is owner-operator: they bought the land, they specified the build, they will trade from the building under their own name for the foreseeable future. The brief came from the retailer's Operations Director and their lead Store Manager directly, working from the way their existing stores function rather than from a published brand-standards document. The site sits within a sensitive suburban context where Solihull MBC's Local Plan emphasises visual amenity, neighbourhood character and traffic impact; planning consent was granted with conditions on brick-clad external finish (rather than industrial composite cladding), a 32-space transport-assessment-validated forecourt, four EV charging bays, and a covered accessible entry canopy.

We were one of three contractors invited to tender. Our bid came in third on price by approximately £9,000 against the leading offer. We won the work because our methodology document was the only one to (a) propose a brick-slip cladding system on PIR-cored insulated panels rather than traditional brickwork, achieving the planning condition's visual outcome with a 4-week programme saving against a wet-trade brickwork programme, (b) cost the secure stock receiving area to a defined high-value retail standard with cabled CCTV, alarm zoning, controlled-access stock cage and a restricted-key door system inside the contract sum rather than as a likely client-side variation, and (c) demonstrate a pad-foundation solution validated against the site investigation report's competent-bearing Mercia Mudstone, removing the CFA piling approach assumed by the two competing bids and saving four weeks against their programmes.

Practical completion was certified on the contracted date. The retailer's store-fit-out team mobilised in week 30 (two weeks pre-PC) for racking, EPOS and merchandising install. The store opened to the public on the contracted opening date, timed to the retailer's peak summer trading window. EPC A rating achieved against the planning condition target of EPC B. Eight-month programme delivered with no variation orders raised against the fixed-price contract.

The Client Brief

The brief came from the retailer's Operations Director and the lead Store Manager jointly, walked through against floor plans of two of the retailer's existing stores. Priorities, in their stated order:

The Challenge

An 8-month standalone retail new-build for an owner-operator retailer is a different discipline from a 12-month build-to-suit retail park unit. Every dimension is driven by the way the retailer actually trades from the building rather than by a published brand-standards document, the planning context demands a brick-clad suburban aesthetic against an industrial steel structure, and the secure stock receiving has to satisfy a high-value-stock retailer's loss-prevention insurance underwriter. Every constraint had a workaround that had to be planned before site possession.

Owner-Operator Brief, Not Published Spec

The Croydon Retail Park Unit we delivered earlier in the year worked from the tenant's 47-page Landlord Build document. Solihull worked from a 90-minute walkthrough with the retailer's Operations Director and Store Manager around two of their existing stores. We took notes, returned with a single-page priority list, refined it through three further sessions, and locked the brief into the contract sum at week six of pre-construction. Owner-operator briefs are flexible until they are signed; we treated the brief sign-off as a contractual hold-point and refused to commence detailed design until both client signatures were on the document. Brief was honoured verbatim through the build; zero scope-creep variations raised.

Brick-Slip Cladding for Suburban Context

Solihull MBC's planning condition required a brick-clad external finish to satisfy the Local Plan's visual amenity policy in this suburban arterial setting. Traditional wet-trade brickwork at this scale would have added four weeks of programme and significant cost. Brick-slip cladding on PIR-cored insulated composite panels, anchored mechanically to the steel frame, achieves the same visual outcome (genuine clay brick face, sympathetic mortar joint, weathered finish) with the speed and thermal performance of a composite panel system. Sample panel approved by the Solihull MBC planning officer at month two; full installation across months four and five.

Secure Stock Receiving for High-Value Stock

Electricals are theft-targeted. The retailer's loss-prevention insurance underwriter required a defined receiving-area standard: cabled-in CCTV with 31-day continuous recording, separate alarm zoning between receiving / retail floor / cash office (so a partial intrusion can be detected and contained), a controlled-access stock cage for highest-value items (mesh-panel construction, restricted-key padlock, dedicated alarm contact), a restricted-key door system on the rear loading door and stock-cage door, and no public sightline from the customer floor through to the receiving area. All five elements specified inside the contract sum and signed off by the retailer's underwriter at month seven.

Mezzanine with Full Staff Facilities

Owner-operator retailers run their stores themselves; the mezzanine is not just office space, it is where the staff actually live during their shift. The 180m² mezzanine carries a full kitchen and break room (sink, fridge, microwave, seating for eight), male and female staff lockers (32 each), a 16-person training room with AV provision for product-knowledge sessions, two WCs (one accessible) and the Store Manager's office. We worked through the layout with the Store Manager directly across three sessions, refining the locker positions, the kitchen island and the training-room sightlines against the way her staff actually move during a shift change.

Pad Foundations, Not CFA Piling

The two competing tenders priced a CFA piling solution as the default foundation strategy, citing the inherited site investigation report's "Made Ground over glacial deposits" header without reading further into the bearing capacity. We took the SI in full at face value: 1.4m of Made Ground over a competent Mercia Mudstone bearing stratum at 7m depth, viable for pad foundations within a 1,200m² building envelope with brick-slip cladding loadings. Pad foundation solution validated by the structural engineer at bid stage, priced inside the contract sum, saving 4 weeks of foundation programme against the piled alternatives.

Trading-Date to Seasonal Calendar

The retailer's store-opening date had been published to their existing-store-network managers eight months before our site possession, timed to the peak summer trading window for their product mix. Liquidated damages tied to lost trading days were significant for an owner-operator on a single-store opening (the new store represented approximately 18% of the retailer's projected annual turnover). We held a 10-day weather contingency on the steel and brick-slip programme and a two-week float on the M&E commissioning critical path, both as fixed programme float. Steel-up complete on contracted month-3 milestone. Store trading on contracted opening date.

Our Approach

Owner-operator standalone retail succeeds or fails on the discipline of the brief sign-off, the planning compromise on external finish, the security specification, and the foundation strategy. Our approach was built around four governance disciplines and one programme discipline.

Brief sign-off as a contractual hold-point. The two competing tenders treated the owner-operator brief as a flexible requirement to be refined through detailed design. We treated the brief sign-off as a contractual hold-point: no detailed design commenced until both client signatures (Operations Director and Store Manager) were on a single-page priority document refined across four pre-construction sessions. This locked the scope at the start. Across the eight-month build, the retailer raised three sensible refinement requests, all closed against existing scope without contract variations. Zero variation orders raised against the £1.1M fixed-price contract.

Brick-slip system as the planning compromise. Solihull MBC's planning condition required a brick-clad finish but the building economics required composite-panel speed and thermal performance. The brick-slip cladding system delivered both: genuine clay brick face mechanically anchored to PIR-cored insulated panels, sample panel approved by the planning officer at month two, full installation across months four and five. The Croydon Retail Park Unit used composite anthracite panels for an industrial-park context; Solihull used brick-slip for a suburban arterial context. Same methodology, different planning condition, different external finish.

Security specification owned end-to-end. The two competing bids treated the secure stock receiving as a "client to confirm" line subject to the underwriter's specification. We took the underwriter's correspondence trail at face value, specified the receiving area to a defined high-value-stock standard inside the contract sum (CCTV, alarm zoning, controlled-access cage, restricted-key door system, no public sightline), and held the underwriter's sign-off as a contractual hold-point at month seven. Underwriter approval letter received Friday of week 28. Insurance commenced on the contracted date.

Pad foundations validated against the SI report. Reading a site investigation report properly is the single most cost-effective thing a contractor can do during a bid. The two competing tenders priced CFA piling on a Made-Ground header without reading the bearing capacity in the underlying Mercia Mudstone. Our structural engineer validated a pad-foundation solution at bid stage, priced inside the contract sum at £31,000 less than the CFA alternative, saving 4 weeks of foundation programme against a piled alternative. Foundation cost certainty achieved at fixed price within contract sum.

Programme float held as fixed, not hopeful. 10-day weather contingency held on the steel-and-brick-slip programme, 2-week float on the M&E commissioning critical path. Five shifts lost to weather across months three and four, all absorbed without consuming critical-path float. Steel-up complete on contracted month-3 milestone. Store trading on contracted opening date.

The Build Process

One hundred and seventy working days from possession of site to practical completion. A planning-conditions-led mobilisation, a pad-foundation strategy validated against the SI report, brick-slip cladding installed across two months, a secure stock receiving area signed off by the retailer's underwriter, and a store trading on the contracted opening date.

01
Month 1

Mobilisation, Planning Conditions Discharge & Brief Sign-Off

Site possession, welfare cabin compound and material storage area established on the eastern boundary against the close-board residential fence line. Eight 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, surface water drainage strategy, construction logistics plan, brick-slip sample panel submission, retained-trees protection plan, dust and noise management plan. Owner-operator brief sign-off completed in the fourth pre-construction session: Operations Director and Store Manager signed the priority document. Demolition of three pre-existing redundant structures on the plot completed.

02
Month 2

Bulk Earthworks, Drainage, Pad Foundations & Brick Sample Approval

Bulk earthworks across the platform: 4,200m³ of cut-and-fill within the consented envelope. Foul drainage 180m to the public sewer connection, surface water drainage 240m to a 65m³ cellular attenuation tank under the future forecourt. Oil interceptor on the forecourt drainage outfall. Pad foundations cast for all portal frames and the mezzanine support columns within the same campaign across two weeks: foundation design validated against the inherited Phase 2 SI report's competent Mercia Mudstone bearing stratum at 7m depth. Brick-slip cladding sample panel installed on a temporary mock-up frame and approved by the Solihull MBC planning officer on the Friday of week eight.

03
Month 3

Steel Portal Frame Erection & Slab Subgrade

Steel sub-contractor mobilised on a fixed sequence: 6 single-span 16m portal frames at 6m centres, 5m clear retail floor height, 6.5m 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 for the 180m² rear staff facilities integrated. 10-day weather contingency held as fixed float; three shifts lost to wind, all absorbed. Steel-up complete on contracted month-3 milestone. Independent steelwork inspection by a third-party engineer pre-cladding: zero non-conformances logged. Slab subgrade laid and compacted across the retail floor footprint.

04
Month 4

Roof, Brick-Slip Cladding (East & South) & Slab Pour

Composite roofing system installed: 120mm PIR-cored composite panels on standing-seam profile, 8% rooflight area in twin-skin GRP rooflights for daylight-linked retail lighting, motorised smoke vents to fire strategy. Brick-slip cladding installation commenced on the east and south elevations: brick-slip face mechanically anchored to PIR-cored insulated composite panels, sympathetic mortar joint pointed and weathered. Single laser-screeded ground-bearing retail floor slab poured on a single 8-hour shift, 175mm thickness, power-trowelled at 6, 12 and 18 hours post-pour. Mezzanine steel deck floor installed for the 180m² back-of-house staff facilities.

05
Month 5

Brick-Slip (North & West), M&E First Fix & Independent SR2 Test

Brick-slip cladding completed on the north and west elevations. Independent retail floor flatness test by a UKAS-accredited floor specialist to TR34 sixth-edition SR2 specification: 6 of 6 panels passed first-time, all readings within tolerance. M&E first fix throughout the unit: incoming three-phase supply terminated, distribution boards set, daylight-linked LED retail lighting cable runs, dedicated CCTV cabling for the secure receiving area, alarm zoning cabling between receiving / retail / cash office, restricted-key door system cabling. Mezzanine staff facilities first-fix: kitchen plumbing, locker-room ventilation, training-room AV cabling, WC drainage.

06
Month 6

Shopfront Glazing, Covered Canopy & M&E Second Fix

8m of shopfront glazing installed on the front elevation: single-pane low-iron toughened laminated glass, twin sliding automated entrance doors. Covered accessible entry canopy fabricated off-site delivered Wednesday of week 23 and installed Thursday-Friday: 3m projection beyond the front elevation, level threshold at the entrance, accessible parking position adjacent. Brand signage frame above the entrance and apex feature inside the canopy. M&E second fix: switchplates, sockets, light fittings, daylight sensors commissioned in test mode, mezzanine staff facilities fitted out.

07
Month 7

Forecourt Surfacing, EV Charging, Secure Receiving & Underwriter Sign-Off

Customer forecourt asphalt overlay laid across the 32-space footprint, line-marked for general bays, 2 accessible bays adjacent to the canopy, 2 parent-and-child bays, and 4 EV charging bays. EV charging units commissioned: 22kW AC fast chargers on a dedicated supply, RFID-and-contactless billing live on day one. Secure stock receiving area completed: cabled-in CCTV with 31-day continuous recording active, alarm zoning commissioned and tested between receiving / retail / cash office zones, controlled-access stock cage installed and certified, restricted-key door system fitted. Retailer's loss-prevention underwriter walkthrough on the Friday of week 28: approval letter received Monday of week 29.

08
Month 8

Final Snag, EPC Assessment, PC & Trading Day

Final snag round in week one of month eight: 28 items closed by end of week two. Air-permeability test on the envelope: result 4.4 m³/(h.m²) at 50Pa against a contracted target of less than 5.0. EPC assessment: rating A achieved against contracted EPC B planning-condition target. Practical completion certificate issued on the contracted date Friday of week 32. Retailer's store-fit-out team on site from week 30 (two weeks pre-PC) for racking, EPOS and merchandising install. Store opened to the public on the contracted opening date the Saturday following PC, timed to the retailer's peak summer trading window.

Project Specifications

The technical detail behind a 1,200m² standalone retail store built for a regional electricals retailer to a brick-clad suburban planning context, with secure stock receiving for high-value stock and a clean handover to the retailer's own fit-out team.

Pad Foundations

Reinforced concrete pad foundations under each portal frame and the mezzanine support columns. Foundation design validated against the inherited Phase 2 SI report's competent Mercia Mudstone bearing stratum at 7m depth. Pad foundation solution saved 4 weeks of programme against the CFA piling alternative assumed by the two competing bids. Foundation cost certainty achieved at fixed price within contract sum.

Power-Floated Retail Floor (SR2)

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 1,200m² retail floor on an 8-hour shift, power-trowelled at 6, 12 and 18 hours post-pour. Independent UKAS-accredited test to TR34 sixth-edition SR2: 6/6 panels first-time pass.

Steel Portal Frame

6 single-span 16m portal frames at 6m centres, 5m clear retail floor height, 6.5m 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 for the 180m² rear staff facilities integrated. All steelwork to BS EN 1090 execution class EXC2.

Brick-Slip Cladding

Brick-slip cladding system on PIR-cored insulated composite panels, mechanically anchored to the steel frame. Genuine clay brick face in a weathered red-stock blend selected to match the suburban context, sympathetic mortar joint pointed by hand. Sample panel approved by the Solihull MBC planning officer at month two. Full installation across months four and five. Air-permeability test result: 4.4 m³/(h.m²) at 50Pa against target less than 5.0.

Composite Roofing

120mm PIR-cored composite roofing system on standing-seam profile, 8% rooflight area in twin-skin GRP rooflights for daylight-linked retail lighting, motorised smoke vents to fire strategy. Standing-seam profile concealed-fix to suit the suburban roofscape rather than industrial-park trapezoidal profile.

Shopfront & Covered Canopy

8m of shopfront glazing on the front elevation, single-pane low-iron toughened laminated glass, twin sliding automated entrance doors. Covered accessible entry canopy with 3m projection beyond the front elevation, level threshold at the entrance, accessible parking position directly adjacent, branded apex feature inside the canopy.

Mezzanine & Staff Facilities (180m²)

Steel-deck mezzanine floor at the rear of the unit covering kitchen and break room (sink, fridge, microwave, seating for 8), male and female staff lockers (32 each), 16-person training room with AV provision, 2 WCs (1 accessible), Store Manager's office, secure cash office. BS 5395-compliant access stair plus a goods lift. Layout refined across 3 sessions with the Store Manager directly.

Secure Stock Receiving

Cabled-in CCTV with 31-day continuous recording across the receiving area. Alarm zoning between receiving / retail floor / cash office, partial-zone activation supported. Controlled-access stock cage in mesh-panel construction with restricted-key padlock and dedicated alarm contact. Restricted-key door system on the rear loading door and stock-cage door. No public sightline from the customer floor into the receiving area. Underwriter sign-off Friday of week 28.

Goods-In Door & Receiving Counter

One ground-level access door on the rear elevation (4m wide x 4m high), motorised insulated sectional roller-shutter with internal control panel and external manual key-bypass. Sized for 7.5-tonne rigid-truck swept-path access (no articulated vehicle access required). Secure stock receiving counter just inside the door with restricted-access sliding hatch.

Customer Forecourt & EV Charging

32-space customer parking forecourt including 2 accessible spaces directly adjacent to the entry canopy, 2 parent-and-child spaces, 4 EV charging bays at 12.5% of provision (planning condition). 22kW AC fast charger units at bay-side feeder pillars, RFID-and-contactless billing live on day one. Heavy-duty asphalt overlay on a fully-bound base course.

EPC A & Sustainability

EPC A rating achieved against contracted EPC B planning-condition target. PV-ready roof structure (panel weights and electrical infrastructure provisioned for future install), 4 EV charging bays at 12.5% of parking, daylight-linked LED retail lighting tied to rooflight zones, air-permeability 4.4 m³/(h.m²). Retained landscaping: three semi-mature feature trees retained, low boundary planting, 1.8m close-board fence to residential boundary.

Fire & Alarm

Smoke and heat detection to BS 5839 Part 1 Category L1 across the retail floor, mezzanine staff facilities and secure receiving area. Motorised roof smoke vents. Fire compartmentation at the mezzanine level. Alarm zoning integrates with the security alarm zoning between receiving / retail / cash office. Sprinkler system not required at this scale and use class.

Performance vs Contracted Targets

Programme
contracted 8 months
PC certified on contracted date
Final account
contract sum £1.1M
£1.1M settled
Variation orders
target 0
0 raised
SR2 floor flatness panels
target 6/6 pass
6/6 first-time pass
Air permeability
target < 5.0 m³/(h.m²)
4.4 m³/(h.m²) measured
EPC rating
contracted EPC B
EPC A achieved
Brick-slip planning approval
sample at month 2
approved month 2
Underwriter security sign-off
target month 7
approved Friday week 28
EV charging operational
target 4/4 at PC
4/4 commissioned
Steel-up milestone
contracted month 3
delivered month 3
Trading-date opening
contracted opening date
store trading on date
RIDDOR-reportable accidents
target 0
0 across 47,000 hrs

The Finished Result

What was delivered

A 1,200m² standalone retail store on a freehold plot in suburban Solihull delivered against an 8-month fixed-price contract with no variation orders, the steel-up milestone hit on the contracted month-3 date, every one of 6 SR2 floor flatness panels passing first-time, the brick-slip cladding planning sample approved at month two and the full installation completed across months four and five, the secure stock receiving area signed off by the retailer's loss-prevention underwriter at week 28, all 4 EV charging bays operational at PC, EPC A rating achieved against an EPC B planning condition target, and the store trading on the contracted opening date timed to the retailer's peak summer trading window.

The owner-operator brief was the spine of the project. Walked through with the Operations Director and the Store Manager around two of their existing stores in the pre-construction period, refined across four sessions, signed off on a single-page priority document at week six pre-construction, and held to verbatim through the build. Three sensible refinement requests came up during construction, all closed against existing scope without a single contract variation. The Croydon Retail Park Unit we delivered earlier in the year was a build-to-suit Cat-A shell to a national homewares retailer's published 47-page Landlord Build specification; this one was the same methodology applied to an owner-operator regional retailer's brief that fit on a single page after four conversations. Different commercial model, different planning context, different external finish. Same fixed price, same delivery date, same store trading on day one.

Day 1Trading on Date
0Variation Orders
EPC Avs EPC B Target
6 / 6SR2 First-Pass

What the Client Said

We are a regional electricals retailer with an established small chain of stores across the Midlands and North-West, and the new Solihull store represented around eighteen per cent of our projected annual turnover for the coming year. We are owner-operator: we bought the land, we wrote the brief, we are trading from the building under our own name. We tendered three contractors. Building Group came in third on price by nine thousand pounds. We appointed them because their methodology document was the only one to propose a brick-slip cladding system on insulated panels rather than wet-trade brickwork (saving four weeks against the planning-required brick finish), the only one to specify the secure stock receiving area to our underwriter's standard inside the contract sum rather than as a "client to confirm" line, and the only one to read our site investigation report properly and validate a pad-foundation solution (saving another four weeks against the CFA piling priced by the competing bids). The cheaper bids would have hit us with a piling variation in month three and a security variation in month seven. Eight months later we had a building with the brick-slip planning sample approved at month two, our underwriter signing off the secure receiving area at week twenty-eight, EPC A rating against the planning condition target of EPC B, all four EV charging bays operational at PC, and the store trading on the contracted opening date the Saturday after handover. Our Store Manager told us at the soft-launch that the mezzanine staff facilities are the best back-of-house she has worked in across her thirteen years with us. We have already spoken to Building Group about a second standalone store.

Operations Director, Regional Electricals Retailer Solihull, West Midlands · April 2026

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