5 Best Basement Renovation Firms in Glasgow You’ll Really Dig
In the city’s tighter property market, a finished basement is no longer just extra space, but leverage. Ask reputable renovation contractors in Glasgow, and they’ll say buyers are eyeing usable square footage in high-demand pockets here.
Done properly, a basement conversion can be one of the sharpest value plays, especially with 70%+ ROI expectations for finished lower-ground spaces.
That’s why I’d rather dig down than overpay for a bigger postcode. For this year, I’m looking into basement renovation firms in Glasgow that can turn cold, awkward basements into warm, compliant, and genuinely liveable rooms worth renting, selling, or keeping.
How much does a basement renovation in Glasgow cost?
Basement renovation in Glasgow costs £1,250 to £2,400 per sqm if you’re converting an existing cellar, so a 20 sqm project may average around £34,000.
If you’re excavating a new basement from scratch, expect a much steeper £3,200-£4,800 per sqm, with many projects starting at about £75,000 due to underpinning, soil removal, and structural work.
For waterproofing alone, high-performance Type C membrane systems usually cost around £80 to £120 per sqm, including labour. You should also budget £2,000 to £4,500 for architect and structural engineer fees, excluding council application fees.
As a safer 2026 estimate, I’d add a 15% contingency fund, especially for older Glasgow sandstone properties where damp, drainage, or foundation surprises can quickly push costs up.
1. We Love Your Projects
Address: 1 Ainslie Rd, Hillington
Contact: +441417398617
Business hours:
Monday to Thursday, 8 AM–4.45 PM
Friday, 8 AM–1 PM
I’d shortlist We Love Your Projects for a Victorian villa cellar, where the brief is to make it liveable, not just Instagrammable. They’re a family-run home improvement team offering renovations, bathrooms, kitchens, and fast, free quotes.
They’re a good fit for homeowners who want one managed project rather than five separate trades. For my pal’s damp old Glasgow cellar, the big plus is their setup that manages everything under one umbrella.
Based on her previous experience, basement work can quickly spiral into structural, plumbing, electrical, and finish-detail chaos. Their Renfrewshire Trusted Trade profile also notes trained, fully qualified engineers and technicians, much to my pal’s relief.
They’re based around the Hillington side, so they’re handy enough for Glasgow homeowners without feeling like a remote contractor. Another perk my friend liked is their financing options for home improvements, including larger makeovers and essential upgrades.
The financing came in handy when her basement budget needs spread out, especially once damp-proofing, ventilation, and building standard works were factored in.
That said, they’re still more of a strong general renovation lead, so it’s best to ask for folios or case studies that show cellar conversion proof, proper damp specs, and a detailed compliance plan.
Customer reviews
Extremely high-quality fitting and workmanship
Extremely high-quality fitting and workmanship, excellent communication, and terrific value for money. Would recommend to anyone looking to get home renovations completed.
- Stuart Kane, Google Review
The job was done perfectly
Had someone come out to fit some panelling and had to leave after they started for work, came back, and the job was done perfectly, and they cleaned up the mess, even stacking all the material left over in a pile. It looks amazing and way better than I could ever hope to do myself. Will use them again for projects I’m not able to do myself!
- Conor, Google Review
2. Polbuilt
Address: 30 Binend Rd
Contact: +447703455633
Business hours: Monday to Friday, 9 AM–5 PM
Polbuilt got my attention with its claim of taking care of things “from the foundations to the last touch of paint”. I don’t want to turn into an accidental project manager during a basement renovation, so this kind of all-in-one handling matters a lot to me.
They also have a roster of qualified electricians and gas engineers, which is the one-company setup I’d want for a cellar job. For a Glasgow basement, that matters a lot because damp-proofing, electrics, plumbing, heating, and finish work all need to line up neatly.
I like how Polbuilt specifically discusses basement conversions as a way to create home offices, gyms, bathrooms, playrooms, or entertainment spaces. I appreciate how they don’t treat projects like mine as a generic refurbishment.
I’d recommend them to homeowners who want a practical, multi-trade builder for a full conversion rather than a purely design-led boutique firm. They’re also listed with the Federation of Master Builders, with renovation, conversions, plumbing, joinery, bathrooms, kitchens, extensions, and general building work on the menu.
Of course, the free quote is a big plus, especially before committing to a potentially pricey lower-ground project. They also offer free advice and a quotation with no strings attached, and have been trading in Glasgow since 2005.
The catch is that I don’t see any financing options offered, which can help a lot with my basement budget.
Customer reviews
We would happily recommend Polbuilt to anyone
We are delighted with the work carried out by Polbuilt. Dominik and his team were excellent, always on time, always tidied up and always did a great job. Although Polbuilt was not the cheapest quote we received, Dominik’s knowledge and professionalism gave me the confidence that Polbuilt could and would do a great job. As the job progressed, Dominik provided regular feedback, and if any additional work was required or requested by us, a price was always agreed in advance, thus enabling us to monitor costs and work within our budget. So what can we say? If you are looking for a reliable, hardworking and knowledgeable team of builders, we would happily recommend Polbuilt to anyone.
- Marie-Pierre Garroway, Google Review
The team of professionals were excellent and coordinated
I cannot recommend Polbuilt enough. From the day Dominik arrived to the completion certificate, the whole job was fabulous. Attention to detail and care of my property was amazing. The property is in a Conservation area and was built in the 1860s, so never easy. The team of professionals were excellent and coordinated by Dominik; communication was excellent. In spite of Storm Bert, the job was completed on time and on budget. Delighted with the finished job, and can highly recommend Polbuilt.
- Alison Wilding, Google Review
3. PJTC LTD
Address: 81 Athelstane Rd
Contact: +447427881003
Business hours: Daily, 7 AM–8 PM
My meticulous older sister called up PJTC because their paperwork-friendly pitch was unusually reassuring for her. They advertise a 1-year workmanship guarantee, with an optional 2 to 10-year warranty cover and HIP insurance-backed protection.
It’s exactly the kind of safety net she’d ask about before having anyone touch her neglected, cluttered basement. They’re also not just a bathroom reno outfit, since they also handle plumbing, joinery, painting, tiling, kitchen/bathroom fitting, and general building.
Credibility-wise, PJTC is listed with the Federation of Master Builders, TrustMark, and SNIPEF, and carries £5 million public liability insurance. My sister is also happy that it’s in the Glasgow G13, so it’s accessible for West End, Bearsden, and Milngavie homeowners.
The free quote angle is quite clear, with the firm promoting free custom quotes and free site surveys through its website. My sister now raves about them to other homeowners who want a tidy, insured, accredited renovation route before committing serious basement money.
The catch is the absence of finance options and of CPA 2026 readiness. But, as my sister says, it won’t hurt to ask about them along with the free quotes, anyway.
Customer reviews
They listened and responded well to requests for minor adjustments
From the beginning, communications with Pavel were great. He was happy to accommodate my selections and, where necessary, recommend suppliers. His project management of the job was great, and I always felt that I knew what was happening and when I needed to do something. The team were all extremely hard working and easy to have around. They listened and responded well to requests for minor adjustments, and always asked if they were unsure of preferences. I developed a strong trust in their judgement. The quality of their work is flawless. The budget was clear and well managed at all stages, and the work was completed at a pace, in spite of there being a holiday weekend in the middle. I’m very happy with this experience and would highly recommend this company.
- Jeannot Farmer, Google Review
Would use them again
Quick, respectful and professional. Pavel came and assessed our tile issue in the evening.. quoted 3 days and finished the job in 1 and a half for the price quoted. I can recommend his services and would use them again.
- Saurabh Vohra, Google Review
4. Marc Allan Builders LTD
Address: Unit 10 Colvilles Park, East Kilbride
Contact: +441414044390
Business hours: Monday to Friday, 8 AM–4.30 PM
I have an ex-colleague who now works from home, so he needs a home office setup that won’t heighten the cries of his little kids while he’s working.
Marc Allen Builders understood his brief and rose to the challenge. They’re construction specialists for bespoke residential projects, commercial fit-outs, and all-trades work across Glasgow and the West of Scotland.
They’re suited for basement conversions with soundproofing, electrics, insulation, and finish work in one plan. Their pitch also feels practical for someone like my former work pal, who doesn’t want to juggle separate joiners, plasterers, and builders while he’s on a Zoom call.
Their portfolio is made up of building conversions, refurbishments, renovations, ceilings, drywall, mezzanine floors, extensions, and project-managed all-trade work. Plus, their Colvilles Park location makes them handy for city dwellers.
They’re a great fit for homeowners needing a builder-led conversion rather than a purely interiors-led basement makeover. They’ve been incorporated since May 2020, and offer free quotes for those who want to test the budget waters first.
That said, I’d still ask for written details on Grade 3 waterproofing, Type C membranes, and 2026 CPA readiness just to be sure.
Customer reviews
Kevin and many others on-site were professional
We are delighted with the renovation and extension of our Victorian Semi-Detached Sandstone house. MAB delivered an extensive re-modelling of our house, which has left us with an incredible family house. We were nervous about the level of steel work and structural changes that were required for an older property; however, MAB managed the technical delivery with excellence. Kevin and many others on-site were professional and dedicated for the entirety of our project. Marc was always fair and easy to communicate with, and maintained a calm head even when practical challenges were encountered. The quality and outcome for us has left us with much to appreciate, and we are thankful for Marc and his team for delivering such a quality finish.
- Stephen Crothers, Google Review
They took time to understand the architect’s vision
Working with Marc and his team on a major house renovation was a very positive experience for us. From the initial consultation, it was clear to us that Marc Allan Builwas were going to be a company we could work with. They took time to understand the architect’s vision, came up with valuable suggestions about how we could make it work and helped us get the most out of our budget. Marc was always available to answer questions and concerns and kept us informed of progress on the job.
- James Brown, Google Review
5. Gormac Construction
Contact: +448000328011, [email protected]
Business hours:
Monday to Thursday, 7 AM–5 PM
Friday, 7 AM–3.30 PM
My neighbour went with Gormac Construction because he wanted regulated trades and a proper design-to-warrant route, not someone with a van and a moisture metre for his basement renovation.
The firm can handle site surveys, estimates, planning, design, and completion of the building warrant. He found it quite useful for a basement project with compliance headaches.
Their all-trades approach suits Glasgow basements where damp proofing, structural work, ventilation, electrics, and finishes need to speak to each other. Thankfully, Gormac covers structural design, planning to completion, and bespoke builds, extensions, conversions, renovations, and alterations.
They’re also listed with the Federation of Master Builders, which gives cautious homeowners like my neighbour an extra layer of trade credibility.
The free quote angle is there, too. They can do onsite consultations and price quotes, which are great for homeowners wanting a builder-led basement conversion with a budget estimate before the mess starts.
However, you’ll still need to enquire closely about Type C membranes, and if finance options are part of the deal, as they aren’t advertised upfront on the website and socials.
Customer reviews
The team really upgraded and future-proofed our property
Highly recommend Gormac construction. Ewan, Grant and the team really upgraded and future-proofed our property with major renovations taking place. We’re enjoying the new layout, which works well for us, and we’re really pleased with the finished results.
- Chris Taylor, Google Review
The team showed the utmost level of professionalism
After being let down by our architect and feeling like we were getting nowhere with our renovation, we contacted Gormac Construction. During our first meeting with Ewan, we felt instantly at ease and like we had finally found someone who would help us achieve the vision we had for our home. From the get-go, Grant and the building team were friendly, accommodating and did everything they could to keep us informed of what was happening, working with us to make the process as easy as possible. The team showed the utmost level of professionalism, communication and attention to detail. We couldn’t be happier with the result, and not only will we use them again, but we also wouldn’t hesitate to recommend Gormac Construction to anyone.
- John-Paul Blackwell, Google Review