Dublin's leading modular home builders delivering high-quality, energy-efficient prefabricated homes in a fraction of traditional build time. From complete modular houses to garden rooms and granny flats, we make modern living achievable.
Looking for a faster, smarter way to build? J&G Conwell Construction delivers exceptional modular homes in Ireland that combine modern design with outstanding energy efficiency. As experienced prefab home builders, we provide an alternative to traditional construction that's quicker, cleaner, and often more cost-effective.
Our modular homes are precision-engineered in controlled factory conditions, ensuring consistent quality regardless of weather. From complete family homes and granny flats to garden rooms and home offices, we offer modular solutions for every need. Each unit arrives ready for rapid on-site assembly, dramatically reducing build time and disruption.
Every modular home we deliver meets or exceeds Irish building regulations, is A-rated for energy efficiency, and is fully compliant with BCAR requirements. Whether you're looking to build a prefab house in Dublin, add an ancillary dwelling for family members, or create additional space on your property, we make modern modular living achievable.
Faster Than Traditional
Energy Efficiency
Modular Units Delivered
Structural Warranty
"Our modular garden studio was delivered and installed in just 3 weeks. The quality is exceptional—you'd never know it wasn't a traditional build. Brilliant service from start to finish!"
— Michael D., Blackrock
From complete modular homes to garden offices and granny flats, we offer a range of factory-built solutions designed for modern Irish living.
Full modular houses from 1-bedroom starter homes to spacious 4-bedroom family residences. Factory-built to A-rated energy standards with contemporary designs, these turnkey homes are delivered and installed on your prepared site in weeks, not months.
Independent granny flat living units for family members who want their own space while staying close. Our ancillary dwellings feature full kitchens, bathrooms, and living areas—perfect for elderly parents, adult children, or rental income potential.
Create the perfect work-from-home environment with an insulated, fully wired garden office. Our garden rooms provide year-round comfort for home working, creative studios, or simply additional living space separate from your main house.
Compact modular apartments ideal for rental properties, student accommodation, or first-time buyers. These cleverly designed units maximise space efficiency while providing comfortable, modern living at an accessible price point.
Add space to your existing home with a modular extension. Factory-built modules are craned into position and connected to your house, minimising on-site disruption and build time compared to traditional construction methods.
Scalable modular construction for commercial applications. We deliver modular offices, classrooms, healthcare units, and multi-unit residential developments—perfect for projects requiring speed, consistency, and budget certainty.
A modular home is a dwelling built off-site in a controlled factory environment, then delivered and assembled on your property. Think of it as manufacturing meets construction — precision-engineered sections (or modules) are built to exact specifications, then transported and craned into position on prepared foundations.
It's crucial to understand the difference between modular homes and garden rooms or pods. Garden rooms are typically single-skin, non-insulated structures used as offices or storage — essentially glorified sheds. Modular homes, by contrast, are fully permanent dwellings with proper foundations, full insulation (often A-rated), plumbing, heating, and electrical systems. They're designed to meet Irish Building Regulations and function as genuine living spaces year-round.
Demand has exploded in Dublin for straightforward reasons. The housing crisis means many families can't afford to move out. Adult children earning decent wages still can't get on the property ladder. Elderly parents want independence but need to be close to family. Remote workers need dedicated office space that isn't a corner of the spare bedroom. And some homeowners see an opportunity — a rental unit in their back garden can generate €800-€1,200 monthly.
Our difference: Unlike pod manufacturers who deliver a shell and leave, we handle the complete project — foundations, site preparation, service connections (plumbing, heating, electrical all in-house), planning applications, and building regulation compliance. One contractor, one point of contact, one price.
The current rules (as of early 2026): Standalone structures up to 25m² to the rear of a property are generally exempt from planning permission under Class 1 of Schedule 2 to the Planning and Development Regulations. Rear extensions up to 40m² may also be exempt. However, modular homes intended as，独立 dwellings have typically required full planning permission regardless of size, as they're considered new residential units rather than ancillary structures.
What's proposed: The Irish Government has proposed increasing the standalone exemption to 40–45m² for structures to the rear of a property, which could include modular homes. The Department of Housing completed an interdepartmental consultation and launched a public consultation in 2025, receiving over 900 submissions — more than half supportive. These changes are expected to be finalised and enacted as part of an update to the Planning and Development Regulations.
Even under proposed changes, conditions will apply: setback distances from boundaries (typically 2-4 metres), rear-of-property only, building regulations compliance still required, and use restrictions may apply (some councils may limit to ancillary use only). We always recommend confirming your specific situation with your local planning authority. Our team stays across every update and can advise you during your free consultation.
Dublin councils: Planning requirements vary slightly between Fingal County Council, South Dublin County Council, Dún Laoghaire-Rathdown County Council, and Dublin City Council. We know the specific requirements for each area and can guide you through the process.
Here are realistic cost ranges per square metre for modular homes in the Dublin area. These are fully installed costs including foundations, site preparation, delivery, assembly, all service connections (plumbing, heating, electrical), internal fit-out, and final certification.
€1,400–€1,800/m²
Shell with standard finish
€1,800–€2,400/m²
Good insulation, quality finishes, fitted kitchen/bathroom
€2,400–€3,200/m²
A-rated energy, premium finishes, fully serviced
€45,000–€70,000
Fully installed
€70,000–€110,000
With kitchen and bathroom
€110,000–€170,000+
Full home
| Construction Type | Cost per m² | Typical Timeline |
|---|---|---|
| Modular Home (mid-range) | €1,800–€2,400/m² | 8–14 weeks |
| Rear Extension (Dublin mid-spec) | €2,400–€3,000/m² | 4–6 months |
| New Build House (Dublin turnkey) | €2,500–€3,500/m² | 6–12 months |
For homeowners who need additional living space, a modular home can deliver a fully self-contained dwelling for 25–40% less per square metre than a traditional extension — and in a fraction of the time.
Every project is different. These figures are guidance based on our experience in Dublin. We provide detailed, transparent quotations with no hidden costs after your free site assessment.
Elderly parents living independently but close to family. Full kitchen and bathroom facilities mean they can maintain independence while you can check in daily. Planning may require a "Granny Flat" condition or be limited to ancillary use only.
The classic Irish solution — adult children save for their own place while living in a modular unit on the family property. Much cheaper than renting in Dublin and teaches budgeting before they take on a mortgage.
A permanent, insulated, serviced workspace — not a garden shed. Separate from the house means proper work-life separation. Many units under 25m² are planning-exempt. Our house extensions can also create this space.
Generate €800-€1,200 monthly rental income. Subject to planning and local authority approval — some councils allow Rent Pressure Zone exemptions. Always check with your planning authority first.
Perfect for visiting family and friends — no more sleeping on the sofa. Gives guests privacy and independence, especially useful for larger families or those who entertain frequently.
Teenagers want independence. A modular unit gives them their own space to study, host friends, and gradually transition to adult life — without the expense of a separate property in Dublin.
Most modular home projects are completed in 8–14 weeks from approval, compared to 6–12 months for a traditional build. Here's how we deliver that speed without compromising quality.
We visit your property, assess access, ground conditions, service connection points, and discuss your requirements. No obligation — we just want to understand what you're trying to achieve.
We help you choose the right size, layout, and specification. If planning permission is required, we manage the full application process — we know the requirements for Dublin extensions and can handle everything.
You receive a detailed, itemised quote covering everything: foundations, the modular unit, all service connections, internal fit-out, and certification. No surprises, no hidden costs.
Our groundworks team prepares foundations and service routes. Because we do this in-house, there are no delays waiting for separate contractors. Our plumbing and heating team prepares for connection simultaneously.
Your modular home is built off-site in controlled conditions while site preparation happens simultaneously. This parallel process is why modular is faster than traditional construction.
The unit is delivered and craned into position. Our in-house plumbing, heating, and electrical teams connect all services. One team, one schedule.
Internal finishes, kitchen/bathroom installation, painting, flooring — all completed by our team. We can also design and fit kitchens through our kitchen design and fitting service.
We ensure full building regulation compliance, energy rating certification, and complete a quality inspection walkthrough with you before handover. We'll also help you with any government grants you may be entitled to.
We don't just deliver a box. We handle every element: foundations, plumbing, heating, electrical, fit-out, and certification. All in-house.
We understand Dublin soil conditions, Dublin council requirements, and Dublin property types. We've completed hundreds of new builds and renovations across the city.
Our plumbers, electricians, and heating engineers work alongside our construction team. No subcontractor delays, no coordination headaches.
We help you identify and apply for any available grants that apply to your modular home project. Our government grants expertise can save you thousands.
One quote, one price, one invoice. We don't surprise you with extras. Every line item is explained upfront. We're also experienced in house renovations and can advise on all options.
Currently, structures over 25m² or those intended as separate dwellings typically require full planning permission. Proposed changes may increase this to 40-45m². Requirements vary between Fingal, South Dublin, DLR, and Dublin City Council. Contact us for a free consultation to clarify your specific situation.
Typical costs range from €1,800-€2,400/m² for a mid-range fully installed unit in Dublin. A 40m² one-bedroom unit typically costs €70,000-€110,000 fully installed. High-spec units can reach €2,400-€3,200/m². Get a detailed quote from our team.
Most projects are completed in 8-14 weeks from approval — roughly half the time of a traditional build. The parallel process (factory building while site is prepared) is what makes modular so fast.
Yes, subject to planning permission or exemption. The structure must be to the rear of your property, meet setback requirements (typically 2-4m from boundaries), and comply with building regulations. We handle the entire process.
Garden rooms are typically single-skin, non-insulated structures — essentially insulated sheds. Modular homes are fully permanent dwellings meeting all building regulations: proper foundations, full insulation, plumbing, heating, electrical, and designed for year-round habitation.
Absolutely. Factory construction allows precise control over insulation, air tightness, and thermal performance. Many achieve A-rated energy performance, lower heating bills, and qualify for SEAI grants.
Many Irish banks will consider financing modular homes, particularly those on permanent foundations. Some treat it as a home improvement loan. Our finance partner can discuss options with you. Get in touch to discuss your options.
Yes. Well-built modular homes on proper foundations are permanent structures that add value to your property. They can be deconstructed and relocated if circumstances change, offering flexibility traditional builds don't provide.
Currently up to 25m² (approx. 270 sq ft) under exempt development rules. The proposed change to 40-45m² is expected to be enacted in 2025/2026 but may come with conditions. Always confirm with your local planning authority first.
This depends on your planning permission. Some are approved as "ancillary" units (for family only), while others may allow rental. Some councils in Rent Pressure Zones may grant exemptions. Check with your local authority before proceeding. Talk to us about your plans.
Every modular home project starts with a conversation. Tell us what you're trying to achieve, and we'll give you honest advice — even if a modular home isn't the right fit.
Discover how a modular home can meet your needs faster and more affordably. Get a free consultation and see our modular options today.
Modular building offers significant advantages over traditional construction. Here's why more Irish homeowners and developers are choosing prefab homes and modular solutions.
While your site is being prepared, your home is being built in our factory. This parallel process means modular homes can be completed in half the time of traditional construction—often ready in weeks rather than months.
Factory-controlled precision means better insulation, tighter air sealing, and superior thermal performance. All our modular homes are built to A-rated BER standards, reducing energy bills and environmental impact for years to come.
Building in a controlled factory environment eliminates weather delays and allows rigorous quality checks at every stage. The result is consistent, predictable quality that meets exacting standards every time.
No weather delays, no site-based surprises. Factory production allows accurate pricing with genuine fixed-cost contracts. You know exactly what your modular home will cost before committing—no budget overruns.
Factory construction generates up to 90% less waste than traditional building. Materials are precisely measured, off-cuts are recycled, and site disruption is minimised—better for the environment and your neighbours.
Modern modular homes are engineered for longevity. Structural steel frames, quality materials, and precision assembly mean our homes are built to the same standards as traditional construction—with 10-year structural warranties.
From initial enquiry to move-in day, our streamlined process ensures your modular home project is delivered smoothly, efficiently, and to the highest standards.
We discuss your needs, assess your site, and help you choose the right modular solution. We advise on planning requirements and provide a fixed-price quotation for your project.
Your modular home is precision-built in our controlled factory environment. Meanwhile, we prepare your site—foundations, services, and access—so everything's ready for delivery.
Your completed modules are transported to site and craned into position. Our team connects all services, completes external finishes, and ensures everything is weathertight and secure.
Final inspections, snagging, and certification. You receive all documentation, warranties, and operating manuals—then the keys to your beautiful new modular home.
We deliver and install modular homes across Dublin and Ireland. Whether you have a site in the city suburbs, rural Wicklow, or anywhere in the country, our modular solutions can reach you. Factory production means location doesn't significantly impact build time—your home is ready when your site is.
For those looking for prefab homes in Dublin, granny flats in Wicklow, or garden offices in Meath, we provide complete site assessment, planning guidance, groundworks, and installation services throughout our delivery area.
Searching for modular home builders near me? Contact us to discuss your location and requirements—we can usually deliver anywhere in Ireland.
Don't see your area? We deliver modular homes across all of Dublin and nationwide. Contact us to discuss your location.
Have questions about modular construction? Here are answers to the most common questions we receive about prefab homes and modular building in Ireland.
Interested in modular construction? Whether you're considering a complete modular home, granny flat, garden room, or commercial modular building, our team is here to help. Contact us today for a free consultation and site assessment.
Tell us about your modular home requirements and we'll arrange a free site consultation.