Report Kit 360

Technical due diligence report

Reference RK-2026-0417

Technical due diligence report
Kestrel House, Fenwick Business Park, Marlbury
office-vacated-01
PropertyKestrel House, Unit 7 Fenwick Business Park, Longmoor Lane, Marlbury
ClientHarrowgate Estates Management Ltd
Report referenceRK-2026-0417
Inspection date(s)12 Mar 2026
Prepared byEleanor Whitcombe, Report Kit 360
Red: 2Amber: 3Green: 1

Sample report

Kestrel House, Unit 7 Fenwick Business Park, Longmoor Lane, MarlburyRK-2026-0417

Document control

Status code: S4

RevisionDateStatusDescriptionAuthorCheckedApproved
P0116 Mar 2026DraftDraft for internal checkEWDO
A19 Mar 2026IssuedFirst issue to clientEWDODO

Distribution

NameOrganisationCopies
Harrowgate Estates Management LtdHarrowgate Estates Management Ltd1

This report has been prepared for the client named on the cover and may not be relied upon by any other party without the written agreement of Report Kit 360. The issue table above records every revision; the latest row is the current issue.

Kestrel House, Unit 7 Fenwick Business Park, Longmoor Lane, MarlburyRK-2026-0417

1 Executive summary

1.1 Main findings

Kestrel House is a two-storey office with an attached single-storey warehouse built in 2008 on a steel portal frame with composite cladding. The building is in fair condition for its age and is suitable for the proposed continued use as a distribution office. The principal matters affecting the investment are: breaches of fire compartmentation between the warehouse and the offices (immediate), the corroded external escape stair (immediate), impact damage to the loading-bay cladding, and warm-air heaters to the warehouse that are close to the end of their economic life.

No evidence of structural movement, asbestos-containing materials in poor condition or flooding was found. Budget repair costs over ten years total about £135,000 excluding VAT and fees, of which £4,550 is immediate.

1.2 Recommended further testing and vendor enquiries

Obtain an Electrical Installation Condition Report (the last is dated 2022 and was unsatisfactory in three observations), a gas safety record for the warm-air heaters and a drainage CCTV survey of the yard gullies. Ask the vendor for the cladding panel specification and the external wall fire performance statement, the lift maintenance contract (passenger lift to the offices) and the planning and building control approvals for the 2016 mezzanine.

1.3 Programme of repairs

Immediate: £4,550. Short term (within one year): £9,200. Medium term (two to five years): £45,700, dominated by replacement of the warm-air heaters. Long term (six to ten years): £76,000, mainly roof-lights, windows and yard resurfacing. Costs are budget estimates at today's prices and exclude VAT, fees and access.

1.4 Technical issues pertinent to the investment

The mezzanine installed in 2016 has no building control completion certificate on file; the tenant's fit-out drawings should be obtained. The EPC rating is D (68); the heater replacement offers an opportunity to improve it. The yard surface is at the end of its life and resurfacing will be a tenant service-charge matter under the lease.

This summary must be read with the main body of the report and the appendices, on which it relies.

Kestrel House, Unit 7 Fenwick Business Park, Longmoor Lane, MarlburyRK-2026-0417

2 Introduction

Instruction

Client's instructionTechnical due diligence survey prior to acquisition of the freehold interestDate(s) of inspection12 Mar 2026
Specialists involvedNone; M&E and structural desk reviews onlyWeather conditionsDry and bright, 9 °C, light south-westerly wind
Occupancy at inspectionOccupied; single tenant trading normallyPersons providing informationSite manager (tenant) and the vendor's agent
Units inspected (multi-let)Single let; whole building

2.1 Limitations

This report records a non-destructive visual inspection carried out from the positions, and under the conditions, described in the methodology section. No parts of the building or asset were opened up, lifted, moved or tested unless the report says so. Concealed, covered, inaccessible or obstructed areas have not been inspected and we cannot confirm that they are free from defects. Observations describe the condition on the day of inspection only.

The inspection was visual and non-destructive. The warehouse roof was inspected from a mobile tower at the eaves and from the drone imagery supplied by the client; we did not walk the roof. Fitted floor coverings, suspended ceiling tiles (except at six sample locations) and the cladding cavity were not opened. The server room was locked and not inspected. Services were not tested. A full roof inspection could be arranged with a rope-access contractor at about £900.

2.2 Documents reviewed

DocumentDateSourceRetained
Asbestos management survey (Harrowgate Environmental)2021-06-14Vendor's agentCopy retained
Fire risk assessment2023-11-02Site managerCopy retained
EICR2022-03-18Vendor's agentCopy retained
Planning permission 08/01234/FUL (original construction)2008-02-27Council planning portalCopy retained

This report is confidential to Harrowgate Estates Management Ltd and is provided for the purpose described in the introduction. Report Kit 360 accepts no responsibility to any third party who relies on it, in whole or in part, without our prior written agreement. Where our report refers to information supplied by others we have assumed it to be accurate unless stated otherwise.

Kestrel House, Unit 7 Fenwick Business Park, Longmoor Lane, MarlburyRK-2026-0417

3 Description of the property

Property

TypeTwo-storey office with attached single-storey warehouseGeneral designSteel portal frame, composite cladding, built 2008
Principal elements of constructionSteel frame, insulated composite wall and roof panels, facing brick plinth, aluminium glazing, concrete ground floor, composite deck first floorAgeAbout 18 years (2008)
Size (floor area, basis)1,850 m² GIA (from the vendor's plans)Dates of substantial modificationMezzanine to the warehouse (2016); office fit-out (2019)
Historical statusNot listed; not in a conservation areaCurrent useB8 storage and distribution with ancillary offices
Services (summary)Three-phase electricity, mains gas, water and drainage; warm-air heating; split AC to offices; passenger liftTenure and onerous lease obligationsFreehold; let on a 15-year FRI lease from 2019
Location contextEstablished business park 2 km from the M-road junctionSite features, topography and boundariesLevel site; tarmac yard and car park; palisade fencing
Full addressKestrel House, Unit 7 Fenwick Business Park, Longmoor Lane, Marlbury, MB4 7CV
office-vacated-01

Figure 3.1 — Location / site plan

Kestrel House, Unit 7 Fenwick Business Park, Longmoor Lane, MarlburyRK-2026-0417

4 Rating and time-band definitions

Each element is given a priority rating and a time band for the recommended action:

ColourRatingMeaning
RedHigh priority: a defect with safety, statutory or significant cost implications. Action immediately or in the short term (within one year).
AmberMedium priority: a defect that will deteriorate or incur cost if not addressed in the medium term (two to five years).
GreenLow priority: routine maintenance, cyclical renewal or long-term planning (six to ten years). No immediate action.
Kestrel House, Unit 7 Fenwick Business Park, Longmoor Lane, MarlburyRK-2026-0417
Time bandDefinition
ImmediateAs soon as practically possible
Short termWithin 1 year
Medium term2 to 5 years
Long term6 to 10 years
Kestrel House, Unit 7 Fenwick Business Park, Longmoor Lane, MarlburyRK-2026-0417

5 Elemental condition

5.1 Roofs, balconies and canopies

Insulated composite roof panels on cold-rolled purlins with GRP roof-lights at about 10% of the area and a hidden eaves gutter. Two panels above the loading bay are impact damaged with exposed cut edges, and the roof-lights are discoloured. The roof is otherwise sound and watertight according to the tenant.

The six questions

What, if anything, is wrong?Impact damage to two panels; discoloured roof-lightsWhat are the consequences?Edge corrosion and eventual leaks; reduced daylight
What repairs are recommended?Replace the two panels, reseal joints; renew roof-lights in the long termWhen should they be completed? (time band)Short term / long term
Who is responsible for the cost?Vendor (price) then tenant under FRI leaseIs further investigation recommended, and when?No

5.2 Rainwater goods

Hidden eaves gutters with internal downpipes and uPVC gutters to the office block. The rear office gutter sags and overflowed during the inspection.

The six questions

What, if anything, is wrong?Sagging and blocked rear gutterWhat are the consequences?Saturation of the wall below and damp internally
What repairs are recommended?Clear, refix and realign; renew bracketsWhen should they be completed? (time band)Short term
Who is responsible for the cost?Tenant (repair covenant)Is further investigation recommended, and when?No

5.3 Walls, cladding and facades

Facing brickwork at ground level with insulated composite panel cladding above. Panel joints and sealants are weathered and two panels at the loading bay show impact damage with exposed cut edges.

The six questions

What, if anything, is wrong?Weathered sealants; impact damageWhat are the consequences?Water ingress at joints; corrosion of cut edges
What repairs are recommended?Reseal joints and replace damaged panelsWhen should they be completed? (time band)Short term
Who is responsible for the cost?TenantIs further investigation recommended, and when?Panel fire classification to be confirmed by the vendor

5.4 Windows, doors and joinery

Powder-coated aluminium windows and curtain walling to the offices, in fair condition. The rear fire exit door has a damaged push bar and does not latch reliably.

The six questions

What, if anything, is wrong?Fire exit push bar damagedWhat are the consequences?Means of escape compromised
What repairs are recommended?Repair or replace the push barWhen should they be completed? (time band)Immediate
Who is responsible for the cost?TenantIs further investigation recommended, and when?No

5.5 Structural frame

Steel portal frame at 6 m centres with cold-rolled purlins and side rails. The frame is painted and shows surface corrosion at the base of two columns in the loading bay where water collects. Clean and recoat the affected bases and provide a drainage channel; the loss of section is minor.

The six questions

What, if anything, is wrong?Surface corrosion to two column basesWhat are the consequences?Loss of section if left for many years
What repairs are recommended?Clean, recoat and form a drainage channelWhen should they be completed? (time band)Medium term
Who is responsible for the cost?TenantIs further investigation recommended, and when?No

5.6 Substructure and basement

Assumed pad foundations to the frame and strip footings to the plinth walls; the ground floor is a power-floated slab. No cracking or settlement was found.

The six questions

What, if anything, is wrong?NothingWhat are the consequences?None
What repairs are recommended?NoneWhen should they be completed? (time band)Not applicable
Who is responsible for the cost?Not applicableIs further investigation recommended, and when?No

5.7 Floors

Ground floor power-floated concrete slab with sealed finish; first floor composite deck with carpet tiles; warehouse mezzanine of steel beams and particleboard deck. The slab has minor surface crazing only.

The six questions

What, if anything, is wrong?Nothing significantWhat are the consequences?None
What repairs are recommended?NoneWhen should they be completed? (time band)Not applicable
Who is responsible for the cost?Not applicableIs further investigation recommended, and when?Mezzanine approvals to be obtained

5.8 Internal walls, ceilings, partitions and doors (including fire compartmentation)

Blockwork and stud partitions with plasterboard linings. Fire compartmentation between the warehouse and the offices relies on a fire-rated partition which has been penetrated by unsealed cable trays in two places. Fire-stop the penetrations immediately.

The six questions

What, if anything, is wrong?Unsealed penetrations in the fire-rated partitionWhat are the consequences?Fire and smoke spread between compartments
What repairs are recommended?Fire-stop the penetrationsWhen should they be completed? (time band)Immediate
Who is responsible for the cost?TenantIs further investigation recommended, and when?No

5.9 Finishes

Carpet tiles, suspended ceilings and painted plaster to the offices; sealed concrete to the warehouse. Finishes are tired but serviceable. Budget for redecoration at the next tenant change.

The six questions

What, if anything, is wrong?Tired finishesWhat are the consequences?Cosmetic
What repairs are recommended?Redecorate and renew carpet tilesWhen should they be completed? (time band)Medium term
Who is responsible for the cost?TenantIs further investigation recommended, and when?No

5.10 Internal and external staircases

Internal steel stair with timber treads and an external steel escape stair. The external stair treads are corroded and the handrail is loose at the half landing; repair within three months as the stair forms part of the means of escape.

The six questions

What, if anything, is wrong?Corroded treads; loose handrailWhat are the consequences?Risk of fall on the escape route
What repairs are recommended?Repair treads and refix the handrailWhen should they be completed? (time band)Immediate
Who is responsible for the cost?TenantIs further investigation recommended, and when?No

5.11 Sanitary and welfare facilities

Male, female and accessible WCs on the ground floor with a shower room. Fittings are serviceable; the accessible WC alarm did not sound when tested and must be repaired.

The six questions

What, if anything, is wrong?Accessible WC alarm inoperativeWhat are the consequences?Non-compliance; risk to a user in difficulty
What repairs are recommended?Repair the alarmWhen should they be completed? (time band)Immediate
Who is responsible for the cost?TenantIs further investigation recommended, and when?No

5.12 Building engineering services

Three-phase electrical supply with a main switchboard in the plant room, gas-fired warm air heating to the warehouse and a split-system air conditioning to the offices. Certificates were not available for inspection; condition appears fair with the heaters near the end of their economic life.

The six questions

What, if anything, is wrong?Warm-air heaters near end of life; no certificates seenWhat are the consequences?Breakdown and inefficiency
What repairs are recommended?Replace heaters; obtain EICR and gas safety recordWhen should they be completed? (time band)Medium term
Who is responsible for the cost?TenantIs further investigation recommended, and when?Yes: EICR and gas safety record before exchange

5.13 External areas, outbuildings and boundaries

Tarmac yard and car park with concrete kerbs, palisade fencing to the rear boundary and a sliding vehicle gate. Potholes at the yard entrance are a trip and vehicle hazard and should be patched; the gate motor is unreliable according to the site manager.

The six questions

What, if anything, is wrong?Potholes; unreliable gate motorWhat are the consequences?Trip hazard; vehicle damage
What repairs are recommended?Patch now; resurface long termWhen should they be completed? (time band)Short term / long term
Who is responsible for the cost?TenantIs further investigation recommended, and when?No
Kestrel House, Unit 7 Fenwick Business Park, Longmoor Lane, MarlburyRK-2026-0417

6 Statutory and compliance matters

Documents requested on site

ItemResultNote
Asbestos register and management plan✔ PassManagement survey 2021, no ACMs
Fire risk assessment / fire strategy✔ PassDated November 2023; review due
Accessibility audit✘ FailNone available
Statutory test certificates (lifts, pressure systems, electrical)✘ FailLift LOLER report not supplied
Energy performance certificate✔ PassEPC D (68), valid to 2029
Planning and building control approvals✘ FailMezzanine approvals missing

The external wall is insulated composite panel with a PIR core; the vendor should supply the panel classification. The fire risk assessment dated November 2023 is due for review and does not record the compartmentation breaches found. The site is in flood zone 1. No contamination was reported and the site was previously agricultural land. The asbestos survey found no ACMs, consistent with the 2008 construction date.

Kestrel House, Unit 7 Fenwick Business Park, Longmoor Lane, MarlburyRK-2026-0417

7 Certification

This report was prepared and signed by the surveyor who carried out the inspection. A record of the internal peer check is kept on file.

Prepared by

Eleanor Whitcombe
BSc (Hons) MRICS

Report Kit 360

Date: 19 Mar 2026

Checked by

Daniel Okafor
BSc (Hons) MRICS

Report Kit 360

Date: 19 Mar 2026

Kestrel House, Unit 7 Fenwick Business Park, Longmoor Lane, MarlburyRK-2026-0417

Appendix A — Photographs

office-vacated-02

Front elevation from the car park

office-vacated-03

Open-plan office, first floor

office-vacated-04

Loading bay cladding showing impact damage

office-vacated-05

Rear gutter overflowing during the inspection

Kestrel House, Unit 7 Fenwick Business Park, Longmoor Lane, MarlburyRK-2026-0417

Appendix B — Schedule of defects and repairs

RefElementCondition / descriptionRatingTimescaleRecommended actionResponsibilityCostPhoto
1Fire compartmentationUnsealed penetrations through the 60-minute fire-rated partition.RedImmediateFire-stop with a tested systemTenant£
2External escape stairCorroded treads and loose handrail at the half landing.RedImmediateRepair treads and refix the handrailTenant£
3Roof claddingTwo impact-damaged panels with exposed cut edges.AmberShort termReplace panels and reseal jointsTenant£
4Rainwater goodsSagging gutter overflowing in rain.AmberShort termClear, refix and realignTenant
5Warm-air heatersThree gas-fired heaters of 2008, serviceable but near end of life.AmberMedium termBudget for replacementTenant£
6Roof-lightsDiscoloured GRP roof-lights reducing daylight.GreenLong termRenew in the long termTenant

Budget costs are indicative, exclude VAT and professional fees, and are for programming purposes only.

Table B.1 — Immediate — schedule of repairs (calculated)

RefElementRepairBudget cost (£)Note
1Fire compartmentationFire-stop unsealed service penetrations in the warehouse/office partition£1,800Life safety
2External escape stairRepair corroded treads and refix the half-landing handrail£2,400Means of escape
3Accessible WCRepair the assistance alarm£350
Subtotal#CIRC!

Table B.2 — Short term — schedule of repairs (calculated)

RefElementRepairBudget cost (£)Note
4RoofReplace two impact-damaged cladding panels and reseal panel joints at the loading bay£6,500
5Rainwater goodsClear, refix and realign the rear gutter; renew two brackets£1,200
6YardPatch potholes at the yard entrance£1,500
Subtotal#CIRC!

Table B.3 — Medium term — schedule of repairs (calculated)

RefElementRepairBudget cost (£)Note
7HeatingReplace the warm-air heaters, which are beyond economic repair£28,000Allow in year 3
8Structural frameClean and recoat column bases; form drainage channel£3,200
9FinishesRedecorate offices and replace carpet tiles£14,500At tenant change
Subtotal#CIRC!

Table B.4 — Long term — schedule of repairs (calculated)

RefElementRepairBudget cost (£)Note
10RoofRenew the roof-light units (discoloured, reduced daylight)£18,000Years 6 to 8
11WindowsReplace the office window units£22,000Years 8 to 10
12YardResurface the yard and car park£36,000Year 10
Subtotal#CIRC!

Table B.5 — Cost summary by time band (calculated)

Time bandBudget cost (£)Share
Immediate#NAME?#REF!
Short term#NAME?#REF!
Medium term#NAME?#REF!
Long term#NAME?#REF!
Total#CIRC!#REF!
Kestrel House, Unit 7 Fenwick Business Park, Longmoor Lane, MarlburyRK-2026-0417

Appendix C — Reinstatement cost assessment

Reinstatement

Gross internal area (m²)1,850Rate basisBCIS rebuild rates, Q1 2026, regional factor applied
Reinstatement cost (£)2,640,000Date of assessment19 Mar 2026
AssumptionsIncludes demolition, fees and VAT on fees; excludes site contamination
Kestrel House, Unit 7 Fenwick Business Park, Longmoor Lane, MarlburyRK-2026-0417

Appendix D — Scope of service and standard limitations

This report records a non-destructive visual inspection carried out from the positions, and under the conditions, described in the methodology section. No parts of the building or asset were opened up, lifted, moved or tested unless the report says so. Concealed, covered, inaccessible or obstructed areas have not been inspected and we cannot confirm that they are free from defects. Observations describe the condition on the day of inspection only.

The findings describe the condition observed on the inspection date. Buildings and assets change with time, weather and use; if a decision is to be made more than three months after the inspection date we recommend that the relevant areas are re-inspected.