Modular Home Extensions
Edinburgh.
Modular home extensions are becoming an increasingly popular choice for homeowners across Edinburgh who want to expand their living space efficiently. Modular Home Extensions, part of the OBG Group, specialises in architect designed modular extensions that combine precision manufactured construction with traditional building standards.
Architect designed.
Precision built.
Our in-house architectural team designs bespoke modular extensions tailored to each property. Whether extending a traditional Edinburgh villa or a modern suburban home, our design approach ensures the extension integrates naturally with the existing property while creating practical modern living spaces.
We work across Edinburgh including Morningside, Corstorphine, Murrayfield, Stockbridge, Leith and Portobello — designing extensions that complement the city's mix of traditional stone properties and modern homes while meeting local planning requirements.
- Free design consultation with our in-house architects
- Bespoke design tailored to your property and brief
- Planning permission and building warrant managed for you
- Precision-manufactured structural components
- 10-year structural guarantee on every installation
- One team from first sketch to completion certificate
The right system
for your project.
We build modular home extensions using three proven structural systems. Our architects recommend the most appropriate system for each project based on the design, the site and your requirements.
HUP Extensions
HUP is an advanced structural panel system manufactured off-site to precise tolerances. Fast to assemble, BBA independently certified, and suitable for a wide range of extension designs including open plan and heavily glazed layouts.
Learn about HUP extensions →SIP Panel Extensions
Structural Insulated Panels (SIPs) provide a highly thermally efficient structural solution. SIP extensions exceed current building regulation requirements for thermal performance, making them an excellent choice for energy-conscious homeowners.
Learn about SIP extensions →Hybrid Extensions
Hybrid extensions combine modular structural systems with traditional building methods — ideal for older properties, conservation areas, or projects where matching the existing architectural character is essential alongside modular efficiency.
Learn about hybrid extensions →Bespoke modular extensions
designed for your home.
Our in-house architectural team designs every extension as a bespoke project — tailored to your property, your brief and your neighbourhood. This design-led approach ensures the finished extension integrates naturally with the existing building while creating functional, modern living spaces.
Open plan kitchens, family rooms, garden living areas with large glazed panels — the modular system supports them all, and our architects design around them from day one rather than retrofitting the brief into a standard product.
- Open plan kitchen and dining extensions
- Family rooms and garden living spaces
- Large areas of glazing and bifold doors
- Flat roof and pitched roof options
- Single and double storey configurations
Traditional foundations
for modular construction.
Unlike many modular builders who rely on ground screw systems, we construct every modular extension on traditional concrete foundations — insulated strip foundations or reinforced concrete bases designed to satisfy Scottish building control requirements and ensure long-term structural reliability.
Concrete foundations ensure the extension performs exactly like a permanent part of the home and integrates seamlessly with the existing structure — meeting every structural requirement for a building-control-approved permanent extension.
- Insulated strip foundations or reinforced concrete bases
- Fully compliant with Scottish Building Standards
- Building control approved on every project
- No ground screw or alternative foundation systems
Why choose a modular
home extension?
Modular construction allows major structural components to be manufactured with precision before installation on site — reducing build times and improving quality control while still allowing fully flexible architectural design.
Precision manufacturing
Structural components are manufactured off-site in a controlled factory environment to exact tolerances — eliminating the variability of traditional site-built construction and ensuring a consistent structural result every time.
Faster build programme
Factory-manufactured components arrive on site ready to assemble, significantly reducing the on-site construction phase — less disruption to your household and a faster route to completion compared to a fully traditional build.
Structural quality control
Manufacturing under controlled conditions means quality is built into every component before it arrives on site. Structural performance is predictable, consistent and independently certified — not dependent on site conditions or individual trades.
Thermal performance
Modular systems achieve U-Values that meet or exceed Scottish Building Regulation requirements — helping to keep your new space warm and your energy bills manageable year-round.
Flexible design options
Modular construction places no restrictions on architectural design. Open plan layouts, large glazing, flat roofs, pitched roofs — our in-house team designs your extension to your brief, not to the limits of a standard product range.
Planning and building warrant included
Our in-house architects manage planning permission and building warrant submission as standard — including all correspondence with your local authority. You don't have to touch a form.
From first call to
completion certificate.
Our integrated team of architects and construction specialists handles every stage of your modular home extension — from the first design conversation right through to final sign-off. One team, one point of contact, throughout.
Start Your ProjectFree design consultation
Our architects meet with you to understand your vision, your home and your site — and begin shaping a design that works for all three.
Architectural drawings
Full architectural drawings produced in-house — no third-party architect fees and no waiting for external professionals before your build can progress.
Planning permission & building warrant
We prepare and submit your planning application and building warrant on your behalf, managing all correspondence with the local authority and building control.
Foundations & modular installation
Concrete pad foundations installed, followed by fast, precise assembly of the modular structural system by our certified installation team.
Completion certificate
We obtain the completion certificate from building control confirming your extension is fully compliant — an important document for your records and any future property sale.
Modular home extensions
across Edinburgh.
We design and build modular home extensions across Edinburgh and the surrounding areas. Our local experience means we understand property styles, planning requirements and building control expectations specific to each area.
Modular home extensions
in Edinburgh — answered.
Do modular extensions need planning permission in Edinburgh?
Planning permission depends on the size and design of the extension. Many extensions qualify under Permitted Development Rights and may not need a formal application. Our architectural team can advise on what applies to your project and manage the full Building Warrant process where required.
Are modular extensions built on concrete foundations?
Yes. Unlike many modular builders who use ground screw systems, all extensions we build are installed on traditional concrete foundations — insulated strip foundations or reinforced concrete bases — to fully satisfy Scottish building control requirements.
Do modular extensions add value to a home?
A well-designed extension can significantly increase both usable living space and property value, particularly when it improves the layout of kitchens, living areas or bedrooms.
Who designs a modular extension?
Every project is designed by our in-house architectural team. Modular Home Extensions is part of the OBG Group, providing integrated architectural design and construction expertise under one roof — with no third-party architect fees.