Boiler Upgrade Scheme £7,500 off a heat pump, deducted from your quote before you pay. 0% VAT to March 2027.
Terrace of homes with integrated solar roofs

Solar roofs integrated into a terrace of upgraded homes

Sustainable Building Services & Energy Design

Low-carbon buildings, designed and delivered from first sketch to final commission.

An engineer-led practice. We run the heat-loss calculations, specify the system, coordinate the accredited trades who install it, then commission and monitor what we built.

Practice record

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Billiano Built Designs is a new practice. Every claim on this site is verifiable, and the accreditation roadmap is published in full.

Boiler Upgrade Scheme grant

£7,500

off an air source heat pump, deducted from your quote upfront.

Up to £9,000 for off-gas-grid oil and LPG homes. 0% VAT on installation to March 2027. Only MCS-certified installers can claim it, which is why MCS is first on our roadmap.

What you would pay

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Illustration only. Every project is quoted after a survey and heat-loss calculation.

What we install

Solar, heat pumps, and the fabric around them.

Three trades that only pay back when they are designed together. We size all three off the same heat-loss model.

Solar photovoltaic array on a pitched tile roof

Solar panel installation

Roof survey, array layout and inverter sizing, with battery storage where the tariff justifies it. Generation modelled against your actual consumption, not a national average.

Air source heat pump units mounted on a building wall

Heat pumps

Air source and hybrid systems sized by calculation, with emitters and pipework checked to run at low flow temperatures. £7,500 Boiler Upgrade Scheme grant handled on your behalf.

Daylit interior with tall glazing after refurbishment

Retrofits and extensions

Insulation, airtightness, glazing and ventilation, designed as one package. New space built to the same standard as the fabric we upgrade behind it.

Air source heat pumps mounted to a rendered wall

Air source heat pump outside a well-insulated home

Thermal comfort

A unit sized by calculation runs quietly and rarely stops.

Low flow temperatures, insulated pipework and controls set to modulate. The comfort comes from the design, not from the badge on the box.

The full cycle

Six stages. We hold all of them.

One practice is accountable from the first survey to the second-year performance check. Nothing is handed over halfway.

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Three markets, one engine

The same engineering, three routes in.

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Naturally ventilated atrium with exposed services

High-ceiling atrium with planting — open floors, stack ventilation

Stack ventilation

Height, openness and planting do work a fan cannot.

On multistorey and public buildings we model the stack effect before specifying mechanical ventilation. Open floors, high ceilings and atria move air for free; the plant only covers what the geometry cannot.

Accreditation roadmap

Published in full, including what we do not hold yet.

A new practice with an honest register is easier to assess than an old one with a wall of badges. Each entry carries its status, its owner and its date. Certificates are linked the day they are issued.

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The model

Design brain, trade muscle.

Billiano holds

Contracted with you. Invoiced by us.

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Accredited partners hold

Registered trades, named on every project.

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Portfolio

No completed case studies yet. Here is the work we are taking on now.

Every project we complete will be published with the measures delivered, the before-and-after energy figures and the funding scheme used. Until then this page stays empty of other people's buildings.

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Enquiry

Start a project

Tell us the building and the outcome you want. You will get a reply from the engineer who would run the job, not a call centre.

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Daylit circulation space with tall windows

Solar array or heat pump on a domestic roof

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At a glance

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What's involved

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Roof-mounted solar array on a tiled pitch

How this one runs

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Electrician testing a domestic electrical panel with a multimeter
Plumber working on pipework in a domestic wall
English house and garden — the homes this work is done in

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Accreditations that apply here

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Questions we get asked

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Accreditations & compliance

The register, exactly as it stands today.

Four statuses, no ambiguity. Held means the certificate is current and linked. In progress means the application is submitted and dated. Planned means the target quarter is set. Partner-held means a named accredited partner carries it and we coordinate the work.

Last reviewed {{ reviewDate }}. If you are assessing us for a framework and need something that is not here, ask and we will tell you whether we hold it.

Legend

HeldCurrent certificate, expiry shown, PDF linked.
In progressApplication submitted, stage and decision date shown.
PlannedTarget quarter committed, prerequisite named.
Partner-heldNamed accredited partner carries it; we coordinate.

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Held In progress Planned Partner-held

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Insurance and cover

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Build note, not for launch: statuses, dates, insurers and certificate links on this page are placeholders. Replace with live record data before publishing — a wrong accreditation claim disqualifies a tender permanently.
Ventilated public building interior

Daylit public building — planting, open floors, big glazing

Public sector & tendering

Capability statement for councils and social landlords.

Engineer-led design and coordination for retrofit and building-services works, delivered to PAS 2035 with accredited installation partners under a single contract with us.

Download capability & PQQ pack (PDF)

Buyer summary

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Terrace of homes with integrated solar roofs

Frameworks and DPS

Listed exactly as our applications stand. Nothing is described as awarded before it is.

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Funded schemes we deliver

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PAS 2035 approach

Roles named per project, in writing, before work starts.

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Social value

Commitments we will contract to, measured per award.

We do not have delivery history to quote. What we will do is write these into the contract, report against them quarterly and publish the figures as they accrue.

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Enquiry

Procurement enquiry

Send the lot reference or the scheme and we will reply with the documents your evaluation needs.

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A postcode tells us if we cover you.

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Contact

Tell us the building and the outcome.

Surveys are booked within a week across {{ region }}. For tenders, use the procurement enquiry on the public sector page so the reference reaches the right place.

Enquiry

Enquiry

No obligation, no sales call. A reply from the engineer who would run the job.

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