Diamond Build Group
Diamond Build Group is a London-based construction firm founded in 1977 delivering new build construction, refurbishment, and fire safety improvement services to clients across the United Kingdom.
- Company typePrivate
- Founded1977
- HeadquartersLondon, United Kingdom
- Headcount101–250
- GTM typeB2B
- OfferingServices
What Diamond Build Group does
Diamond Build Group is a London-based construction company founded in 1977 that operates across three core service lines: new build construction, refurbishment of existing buildings, and fire safety improvement works. The firm is a private, for-profit entity with a workforce of 101-250 employees, placing it in the mid-tier of UK construction contractors by headcount. Its London domicile and specialisation in fire safety retrofit position it within a regulatory tailwind created by the post-Grenfell remediation regime, including the Building Safety Act 2022 and associated fire safety legislation driving demand from housing associations, local authorities, and private freeholders.
The company's customer base and contract structure are not detailed in the available source material, but the combination of new build, refurbishment, and fire safety improvement work is consistent with serving both public sector clients (local authorities, housing associations, registered providers) and private residential or commercial developers in London and the wider UK. Business model mechanics — including pricing approach, contract type (JCT/NEC frameworks vs. tendered projects), and go-to-market — are not disclosed. The company's website was inaccessible during data collection, limiting visibility into current backlog, tender pipeline, certifications, and named clients.
Scale indicators are limited to firmographic data: 101-250 employees, single London base, founded 1977, no disclosed revenue. No funding rounds, ownership details, subsidiaries, acquisitions, partnerships, or management team information are evidenced in the available source material.
Diamond Build Group firmographics
Firmographics- Name
- Diamond Build Group
- Website
- https://diamondbuildgroup.com
- Company type
- Private
- Founded year
- 1977
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Diamond Build Group is a London-based construction firm founded in 1977 delivering new build construction, refurbishment, and fire safety improvement services to clients across the United Kingdom.
- Ownership category
- akta.pro rank
Diamond Build Group industry classification
Industry- Product category
- Construction Services
- NAICS
- Nonresidential Building Construction (2362), Commercial and Institutional Building Construction (23622), Construction of Buildings (236)
- SIC
- General Bldg Contractors - Nonresidential Bldgs (1540), Operative Builders (1531)
- akta.pro primary industry
- Office & Corporate Building Construction (IMAFACAA)
Keywords
Where Diamond Build Group is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Markets served
Diamond Build Group business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Supply Chain, Operations, Infrastructure, Marketing or Sales
Diamond Build Group product offering
Product offeringCore offering
Diamond Build Group is a London-based construction contractor delivering new build construction, refurbishment, and fire safety improvement works for buildings. The firm undertakes construction projects for commercial, residential, and public-sector clients, with a specialist focus on upgrading fire safety in existing buildings. Operations are based in the United Kingdom with primary delivery in the London region.
Differentiator
Problem solved
Functional benefit
Products and services
- New Build Construction Construction delivery for new residential, commercial, and mixed-use building schemes. Targeted at developers, public-sector clients, and building owners requiring a London-based contractor for new build projects.
- Building Refurbishment Refurbishment works on existing buildings, covering fit-out and upgrade scope. Targeted at property owners, housing providers, and developers needing to modernise or repurpose existing building stock.
- Fire Safety Improvement in Buildings Specialist works to improve fire safety in existing buildings, addressing passive and active fire protection, compartmentation, and related remediation. Targeted at local authorities, registered providers, commercial property owners, and developers responding to building-safety regulation.
Companies that use Diamond Build Group
Customer profileIdeal customer profiles2 records
Diamond Build Group technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Diamond Build Group partnerships and signals
Strategic signalExpansion highlights1 record
Diamond Build Group competitors and assessment
Company assessmentDirect peers
- Bugler Group: London-focused construction firm delivering new build, refurbishment, and fit-out across commercial, residential, and public sectors. Highly comparable on geography, mid-tier positioning, and service profile.
- Morgan Sindall Group: London-listed UK construction and regeneration group with substantial fit-out, refurbishment, and new build operations. Highly comparable on service mix, with a particular overlap in refurbishment and regeneration-led projects.
- Wates Group: Privately held UK contractor delivering new build, refurbishment, and fit-out across commercial, education, and public sectors with significant London presence. Direct peer on customer segment, project scale, and ownership profile (private).
- Bowmer + Kirkland: Privately held UK contractor focused on commercial new build, refurbishment, and fit-out with a strong London and South East footprint. Comparable on ownership structure, geography, and service mix, particularly on commercial and office projects.
- Willmott Dixon: UK construction firm with strong London and South East presence, delivering new build, refurbishment, and planned maintenance across public and commercial sectors. Comparable on customer base, project size, and service breadth.
- McLaren Construction Group: Privately held UK construction group delivering commercial, residential, and mixed-use new build and refurbishment, with strong London presence. Comparable on size band, service mix, and private ownership.
- Mace Group: London-headquartered construction and consultancy business with comparable new build, refurbishment, and fit-out capability across commercial and residential sectors. Closest like-for-like on geography, service mix, and tier of project.
Emerging players
- Rydon Group: Privately held South East England contractor active in residential refurbishment, fire safety remediation, and new build. Strongly comparable on the fire safety improvement angle and on refurbishment-led delivery in the London/South East region.
Broad incumbents
- Kier Group: UK-listed infrastructure, construction, and property services group with a meaningful London and public sector construction business. Overlaps on refurbishment and public sector delivery, though operates at significantly larger scale.
- Sir Robert McAlpine: Established UK tier-one contractor with a broad portfolio spanning new build and refurbishment across commercial, infrastructure, and public sectors. Overlaps with Diamond Build on service type and London delivery, but operates at a meaningfully larger scale.
Market position
Strengths4 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights5 records
Customer concentration
Diamond Build Group social profiles
Digital presenceDiamond Build Group financial estimates
Financial estimateRevenue estimate
Valuation estimate
Diamond Build Group leadership team
Management profileNumber of profiles
Diamond Build Group funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Diamond Build Group M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Diamond Build Group
What does Diamond Build Group do?
Diamond Build Group is a London-based construction contractor delivering new build construction, refurbishment, and fire safety improvement works for buildings. The firm undertakes construction projects for commercial, residential, and public-sector clients, with a specialist focus on upgrading fire safety in existing buildings. Operations are based in the United Kingdom with primary delivery in the London region.
Is Diamond Build Group a public or private company?
Diamond Build Group is a private company. It is classified as unknown and is currently operating.
When was Diamond Build Group founded?
Diamond Build Group was founded in 1977. It employs 101 to 250 people.
Where is Diamond Build Group based?
Diamond Build Group is headquartered in London, United Kingdom, in the Europe region.
Who are Diamond Build Group's main competitors?
Direct peers on record are Bugler Group, Morgan Sindall Group, Wates Group, Bowmer + Kirkland, Willmott Dixon, McLaren Construction Group and Mace Group. Rydon Group is listed as an emerging player. Broad incumbents are Kier Group and Sir Robert McAlpine.
Does Diamond Build Group have an API?
No public API is recorded for Diamond Build Group.
What industry is Diamond Build Group in?
Diamond Build Group's product category is Construction Services. Its primary akta.pro industry code is IMAFACAA, Office & Corporate Building Construction. Its NAICS code is 2362 and its SIC code is 1540.