In terms of upfront capital cost, usually yes. But this should be weighed against the additional quality that naturally follows such a rigorously detailed, airtight approach to construction. Lower running costs, improved comfort and durability, and stronger long-term resale value all form part of the picture — particularly as energy prices rise and awareness of building performance continues to grow.

Design and build is especially helpful if you value early cost certainty and reassurance that what is being designed can actually be built within budget. Because the designer and contractor are working as one team, design decisions, detailing and costing can evolve together from the outset.

Having design and construction under one roof also means changes can be made and re-costed quickly and seamlessly, avoiding the delays and disconnect that can sometimes occur when information passes back and forth between separate parties.

Design and build works best when there’s a strong working relationship built on trust, transparency and shared objectives — something we place a great deal of importance on at Greenheart.

Absolutely. We can start from scratch, developing a concept design based on your brief and site, before progressing through planning, technical design, building control and energy compliance, and ultimately construction.

Equally, we’re happy to work with an existing design, refine or rework proposals already developed elsewhere, or simply provide construction costs for a completed scheme.

We can deliver anything from a fully finished turnkey project to an externally complete shell for clients who wish to undertake elements internally themselves.

For practical and environmental reasons, we generally work within around an hour of our Bristol office. Typically, that includes Bristol, Bath, Stroud and parts of South Gloucestershire, South Wales, North Somerset and West Wiltshire.

Working locally helps us maintain close relationships with clients, consultants, suppliers and subcontractors, while reducing travel and improving oversight on site.

There’s no strict lower or upper limit, but operationally we’re best suited to substantial extensions, remodels, retrofits, and new-build projects — whether single homes or multiple units

Yes. We’re experienced with a wide range of construction methods, from conventional masonry cavity construction through to CLT and straw bale.

Over time, we’ve developed a palette of preferred materials and systems that align particularly well with low-energy, low-carbon construction — primarily timber frame insulated with wood fibre products such as PAVATEX, cellulose insulation such as Warmcel, and airtightness systems from companies including SIGA and Pro Clima.

You can read more about the materials and approaches we commonly work with elsewhere on the site.

Absolutely. Different clients and projects place different emphasis on these factors, but we believe they should always be considered as part of the wider design process.

Whether the priority is reducing operational energy demand, lowering embodied carbon, improving material health, or balancing all three, we aim to develop solutions that respond thoughtfully to those goals.

While we always encourage careful planning rather than rushing into construction, we also appreciate that long lead times can be frustrating.

As a growing company managing multiple projects simultaneously, our programme is relatively fluid, and in some cases we’re able to engage with new projects quite quickly.

Generally, we install MVHR systems and renewable technologies as part of our wider design-and-build projects rather than as standalone services.

One exception is Warmcel insulation — as registered regional installers, we’re happy to undertake standalone Warmcel installation projects.

There can be, although available grants and funding schemes change regularly.

We’re always happy to help clients identify and access any support available at the time, but we don’t offer specialist funding advice ourselves. Where appropriate, we can direct clients towards renewable suppliers and specialists who can provide up-to-date guidance on current grants and eligibility.

Yes. While sustainability metrics and project drivers can vary across commercial and public-sector work, we’re very happy to undertake these projects where there is a genuine focus on environmental performance and a collaborative working relationship.

Absolutely — and we actively encourage it.

Our design packages are often intentionally lean and practical, helping keep early-stage design costs proportionate. This works particularly well when we’re carrying both the design and construction responsibilities internally, as communication between our teams is streamlined and well established.

If you intend to issue our drawings out to multiple contractors for tender, additional specification and documentation work may sometimes be required.

In most cases, clients arranging finance will also require a structural warranty. The inspection and certification needed for this can usually be coordinated alongside building control through a single provider.

Although some of the materials and techniques we use are less common in the UK, they are widely established across Europe and generally well understood by building control bodies, insurers and warranty providers.