Services · Mobile app development · Field service management apps

Field service apps built around London's streets, buildings and boroughs.

Codeeo handles field service management app development London firms use to plan, dispatch and close jobs across the capital: an engineer app for iOS and Android, a dispatcher board and a client portal. Each one is shaped around congestion, permit parking, managed buildings and narrow access windows. A van that spends forty minutes hunting for a loading bay in Westminster has lost a job, so the app settles routes, access notes and parts before anyone leaves the yard.

Our team of 80+ is based in Dubai, Riyadh and Karachi and works remotely with London clients, with discovery, design reviews and demos held by video call. We have delivered 200+ projects across the UAE and the US and are rated 4.7 from 23 Google reviews.

Built for
Facilities management firms, building services contractors, lift, fire and security engineers, and property maintenance teams covering London's boroughs and the City.
Typical timeline
Timing is agreed during discovery once job types, integrations and user roles are known, and it is written into the scope before any design work starts.
What you own
The source code, app store listings, dispatcher dashboard, job history and client data, all held in accounts your business controls.
Rated
4.7 / 5 from 23 Google reviews

200+ companies servedFrom a first store to an ADX listed developer

Modon
Majid Al Futtaim
HP
Belkin
Dulsco Group
OneClickDrive
Hanayen
HMS
Clocksprings
Ghezlan

What the app can include

Features shaped by how London jobs actually run.

A reactive call to a tower in Canary Wharf and a boiler repair in a Hackney terrace share a job number format and very little else. The first needs a building pass, a booked goods lift, a permit to work and a concierge who knows the engineer is coming. The second needs a resident who is home, a parking spot within reach of the tool bag and a part that was on the van this morning. London adds its own layers on top: the Congestion Charge and the Ultra Low Emission Zone, controlled parking zones that differ by borough, red routes where stopping is restricted, and listed buildings or conservation areas where a careless fix becomes a planning problem. We design the data model first, so sites, assets, contracts and access rules sit in the right place, and then build screens that put the right detail in front of each engineer at the right moment. The features below are the ones London operators most often ask for; we scope only what your work needs.

Explain your project
  • Site access and induction notes

    Each site record holds how to get in: pass office hours, goods lift booking, loading bay rules, concierge numbers, permit to work references and any induction an engineer must complete first. The notes appear before the engineer sets off, not after they arrive at a locked service door on a Sunday morning.

    Fewer wasted visits to buildings that were never going to let the engineer in.

  • Charge zone aware dispatch

    The dispatcher board shows which jobs sit inside the Congestion Charge zone, which vans are compliant for the ULEZ, and how visits cluster by borough. Planners can group central jobs onto one van, keep older vehicles on outer routes, and see parking permit coverage before confirming a slot with the client.

    Routes that respect what driving into central London actually costs the business.

  • Contract SLA clocks

    Facilities contracts in London usually carry response and fix targets that differ by priority and by building. The app starts the right clock when a call is logged, warns the planner before a breach, and records the reason if a target slips, such as no access or a part on order.

    Monthly SLA reports that come straight from the job record.

  • Planned maintenance across a portfolio

    Recurring visits for lifts, fire alarms, emergency lighting, water hygiene and air handling are generated from the asset register and spread across the month. When a managing agent adds a new block in Islington or drops one in Croydon, the schedule updates without anyone rebuilding a spreadsheet.

    Planned work stops colliding with reactive calls in the same building.

  • Asset tagging and history

    Engineers scan a QR or NFC tag on a pump, panel or air handling unit and see its make, model, service history and open defects. New assets can be added in the plant room with photos, so the register for a large London estate gets more accurate with every visit.

    An asset register your clients can trust during audits.

  • Offline working below ground

    Basements, plant rooms and lift shafts across London often have no signal at all. The app stores the day's jobs, forms and asset data on the device, lets engineers complete everything offline, and syncs once they surface, with conflict rules agreed in advance.

    No job sheets lost because the boiler room was two floors underground.

  • Photo evidence and signed job sheets

    Timestamped before and after photos, meter readings, risk assessment answers and a signature from the site contact or resident are attached to the job and sent as a branded report. Leaseholders and managing agents get proof of work without chasing the office.

    Disputes settled by the record rather than by memory.

  • Parts and trade counter collection

    Many London engineers collect parts from merchant branches near the job rather than driving back to a yard. The app tracks van stock, raises a parts request against the job, and shows which nearby branch the order is waiting at so the engineer can collect on the way.

    Second visits caused by missing parts become the exception.

  • Client portal for managing agents

    Property managers, building managers and facilities teams log calls, approve quotes and follow progress through a web portal. Each client sees only their own buildings, and quote approvals for extra work are captured with a name and time against the job.

    Fewer calls to the helpdesk asking whether anyone is on the way.

Who this is for

London operators who usually get the most from a custom build.

Off the shelf field service tools suit many firms, and we will say so in discovery if one fits you. A custom field service management app development London project makes more sense when your contracts, buildings or compliance duties do not match the template. These are the four situations we see most often across the capital, and each one shapes the first release differently.

01

Facilities contractors serving City and Canary Wharf offices

Commercial towers run on permits, method statements, out of hours windows and strict building rules. Your engineers need the right paperwork before they reach the loading bay, and your account managers need SLA evidence for each tenant and landlord. We build around the permit and access process first, then add PPM scheduling and reporting so the monthly review with the client runs on data from the app rather than on a separate spreadsheet.

Access and permits are the first screens we design for this group.

02

Repairs contractors working for London housing providers

Since 27 October 2025, Awaab's Law has required social landlords in England to investigate and act on damp, mould and emergency hazards within set timescales. Contractors carrying out that work for London boroughs and housing associations need every visit, photo and finding recorded against the right clock. We build hazard categories, timed workflows and resident communication into the app so your client can show the regulator what happened and when.

Your client's own policy defines the timescales; the app enforces them.

03

Lift, fire and security specialists

Statutory inspections, insurer requirements and maintenance contracts generate a dense calendar across hundreds of London sites. These firms need visit generation from the asset register, defect tracking with priorities, and certificates produced from completed forms. We focus the first release on planned work and defect follow up, because that is where missed visits create the most risk for your clients and your insurance cover.

Certificates come from the form data, so nothing is retyped.

04

Growing trades firms leaving WhatsApp and spreadsheets

Plenty of London plumbing, electrical and heating firms reach fifteen or twenty engineers while still dispatching by group chat. Work gets lost between messages, invoices go out late and nobody knows which van has the part. A focused first version with job booking, dispatch, job sheets and invoicing into your accounting software usually pays back in hours saved before any advanced feature is added.

We start small and add modules once the team is using the basics daily.

Six steps from first call to engineers using the app every day.

  1. 01Discovery by video callWe talk to your planners, engineers and a client or two, map how a job moves from call to invoice, and list the London sites and contracts that cause the most friction today.
  2. 02Job, site and asset modelSites, buildings, assets, contracts, SLAs and access rules are modelled before any screen exists, because a weak data model is the main reason field service software breaks under real workload.
  3. 03Clickable prototypeEngineers and dispatchers try the main screens on their own phones. We watch where they hesitate, especially on job completion and photo capture, and change the design before writing production code.
  4. 04Build in short cyclesFeatures ship to a test build every couple of weeks. Your team sees progress in a shared board, and integrations with accounting, CRM or stock systems are tested against real data early.
  5. 05Pilot with one teamOne crew or one contract runs on the app first, often a group of central London sites. Their feedback on access notes, offline sync and forms shapes the version the wider workforce receives.
  6. 06Rollout and supportWe publish to the App Store and Google Play under your accounts, train your planners by video call, and agree a support plan for fixes, operating system updates and new modules.

Technology

What we build this with.

We build engineer apps in React Native or Flutter, with native modules for scanning, offline storage and background location where needed. Back ends run on Laravel or Node with hosting on Azure or AWS in UK regions. Common integrations include Xero, Sage, QuickBooks, Microsoft Dynamics 365 and merchant ordering systems.

01Mobile

  • Swift
  • Kotlin
  • Flutter
  • React Native

02Data and cloud

  • PostgreSQL
  • MySQL
  • MongoDB
  • AWS
  • Azure
  • Docker

03Marketing and tracking

  • GA4
  • Google Tag Manager
  • Search Console
  • Meta Pixel
  • Looker Studio

Questions London firms ask before building a field service app.

It depends on your job types, integrations and the number of user roles, and we commit to timing in writing after discovery.

A firm that needs dispatch, an engineer app and job sheets connected to one accounting package has a much shorter path than a facilities contractor that needs SLA clocks per building, permit workflows, PPM generation and a client portal. We break the work into a first release and later modules, give you a timeline for each, and show progress in a test build throughout so nothing arrives as a surprise at the end.

Tell us what the business needs. We will tell you what to build first.

Schedule a free consultation and get a written recommendation, with costs, before you commit to anything.

Get in touch

PROVEN RESULTS

4.7 / 5from 23 Google reviews