Business Details
Sustainable Construction Specialists in Hertfordshire
At Mars Building Group, we bring over four decades of expertise to the construction industry, specialising in sustainable and energy-efficient homes. Our commitment to excellence is reflected in every project, from new builds and passive houses to extensions and refurbishments. We prioritise collaboration with clients, ensuring their vision is realised through meticulous planning and execution. Our team of skilled professionals employs high-quality materials and innovative techniques to deliver durable, eco-friendly solutions. With a focus on Passivhaus standards, we combine traditional craftsmanship with modern sustainability practices. Our reputation as Hertfordshire's leading builder is built on transparency, accountability, and a dedication to exceeding client expectations.We manage every stage of the construction process, offering full project management and design support through our network of architects. Our track record demonstrates our ability to complete projects on time and within budget while maintaining exceptional attention to detail. Clients consistently praise our communication, problem-solving approach, and the enduring quality of our finished properties. This combination of experience, expertise, and client-centric values positions us as a trusted partner for residential construction projects of all scales.
Services
New Build Houses
Passive Houses
Refurbishments
Extensions
Sustainable Energy Solutions
Highlights and features
- We have over 40 years of experience in residential construction
- Our team specialises in Passivhaus certified energy-efficient buildings
- We maintain full transparency throughout the construction process
- We use only premium quality materials for lasting results
- Our project management covers every stage from design to completion
Associations and certifications
- Passivhaus Institute
What people say
Top-quality results
Great communication
Completed on schedule
Solution mindset
Show home standard
Services
New Build Houses
We construct bespoke sustainable homes tailored to individual requirements. Our new build houses combine traditional brick/block construction with modern energy-efficient techniques. Each project receives full architectural support, structural design, and Passivhaus certification where required, ensuring comfortable, durable residences that meet current building standards while minimising environmental impact.
Passive Houses
Specialist construction of ultra-low energy buildings meeting Passivhaus standards. We utilise advanced insulation, airtight construction methods, and mechanical ventilation systems to create homes requiring minimal heating. Our expertise covers both new builds and retrofits using brick/block or timber frame systems, delivering significant energy savings without compromising comfort or aesthetics.
Refurbishments
Comprehensive renovation services transforming existing properties into modern, efficient living spaces. We handle complete interior overhauls, structural modifications, and energy efficiency upgrades. Our approach maintains architectural integrity while incorporating contemporary design elements and sustainable materials, ensuring improved functionality and enhanced property value through meticulous attention to detail.
Extensions
Design and construction of single and multi-storey extensions to maximise living space. Our services include loft conversions, kitchen extensions, and full property expansions. We coordinate planning permissions, structural engineering, and interior integration to create seamless additions that enhance both practicality and aesthetic appeal while maintaining energy efficiency standards.
Sustainable Energy Solutions
Integration of renewable energy systems into residential projects. We supply and install solar panels, mechanical ventilation with heat recovery (MVHR) systems, and high-efficiency heat exchangers. These solutions reduce carbon footprints while maintaining indoor comfort, complementing our commitment to eco-friendly construction practices across all project types.
Questions
What types of construction projects do you specialise in?
We specialise in sustainable new builds, Passivhaus certified homes, extensions, and refurbishments across Hertfordshire.
How experienced is your construction team?
Our team has over 40 years of combined experience delivering residential projects with a focus on energy-efficient building techniques.
Can you help with architectural design?
Yes, we collaborate with our network of architects or can work with your chosen design professional throughout the project.
Do you offer project management services?
We provide full project management covering design, planning, construction, and quality control for complete builds.
What sustainability features do you incorporate?
We integrate Passivhaus standards, solar panels, MVHR systems, and high-performance insulation in all appropriate projects.
How long do typical projects take to complete?
Project timelines vary by scope, but we consistently deliver within agreed schedules while maintaining exceptional quality standards.
Reviews (3)
Junior Howieson
Apr 08, 2021
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I asked Mars Building Ltd to build a hip end roof for me with 2 valleys pitching back into an existing up and over roof, i rang on easter bank holiday and i spoke to the boss Ricky who was in hospital with his wife having his second child, which speaks volumes for his commitment to his customers, so i spoke to him on Saturday and himself and his team of carpenters were with me on the tuesday, he was efficient and had the roof set out within 2 hours, he left his team of 3 carpenters to it and the roof was built complete with fascia and soffits within a day and a half, i was very happy with the standard
Davoud Amel-Azizpour
May 26, 2019
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Ricky and team did a fantastic job on our loft conversion. I would definitely recommend them and use them again for other projects.
Helen Speller
Dec 24, 2018
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Emailed twice with drawings as requested. No reply when asked to quote. I understand if team is busy but at least reply and say you can not fit it in. Disappointing.
