Linx Design Build
Linx Design Build is a London-based, founder-owned design-and-build contractor founded in 2017, delivering turnkey home extensions, loft conversions, renovations, new builds and commercial fit-outs to residential homeowners and commercial clients across the South East of England through an in-house 60+ person team.
- Company typePrivate
- Founded2017
- HeadquartersLondon, United Kingdom
- Headcount11–50
- GTM typeB2B and B2C
- OfferingServices
What Linx Design Build does
Linx Design Build is a UK private limited company founded in 2017 that delivers turnkey design-and-build construction services across London and South East England. Its core offering bundles architectural design, planning submissions, structural engineering, and multi-trade construction into a single fixed-price contract executed through a standardised six-step process (consultation, design, planning/approvals, fixed-price quote, build, handover). The company employs 60+ in-house designers, architects, project managers and craftspeople with no subcontracted trades, operating from three studios in Chelsea, Shoreditch and Surrey. Service lines span residential home extensions (from £60,000), loft conversions (£55,000), full house renovations (£40,000), new build houses (£160,000+), remodelling (£25,000), basement/garage conversions (£28,000), and commercial fit-outs (Cat A/Cat B offices, retail, restaurants, gyms, clinics).
The business model is project-based revenue with fixed-price, milestone-billed contracts; consumers can spread payments 12-60 months through a Klarna finance partnership. Customers are acquired through a hybrid go-to-market combining self-serve digital tools (build cost calculator, rear extension configurator, online quote forms), inside sales via a 24-hour-response contact centre, and direct field sales with free site visits and in-studio consultations. The company targets two primary segments - residential homeowners seeking to extend or refurbish their properties, and commercial businesses needing fit-outs - with a nascent property developer / land-led new build vertical layered on top.
Linx holds an unusually broad UK construction compliance stack (CHAS, Constructionline, NICEIC, FMB, TrustMark, SafeContractor, Gas Safe, NAPIT, RIBA, ARB) and backs every project with a 10-year structural guarantee underwritten by IWA. Marketing leans heavily on review-driven trust signals: Best of Houzz awards in 2018, 2019, 2024 and 2026, a 4.9 average rating across 500+ reviews on Google, Reviews.io, TrustATrader and Houzz, and a stated 98% on-time completion rate across 500+ delivered projects. The firm remains privately held, founder-led, and bootstrapped, with no disclosed external funding rounds.
Linx Design Build firmographics
Firmographics- Name
- Linx Design Build
- Legal name
- Linx Design and Build
- Website
- https://linxdesignbuild.co.uk
- Company type
- Private
- Founded year
- 2017
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Linx Design Build is a London-based, founder-owned design-and-build contractor founded in 2017, delivering turnkey home extensions, loft conversions, renovations, new builds and commercial fit-outs to residential homeowners and commercial clients across the South East of England through an in-house 60+ person team.
- Ownership category
- akta.pro rank
Linx Design Build industry classification
Industry- Product category
- Design and Build Construction Services
- NAICS
- Residential Remodelers (236118), Residential Building Construction (23611)
- SIC
- General Bldg Contractors - Residential Bldgs (1520)
- akta.pro primary industry
- Residential Design-Build & Renovation-Integrated Builders (IMAFABAE)
- akta.pro secondary industries
- Design-Build / EPC General Contracting (IMAFAAAD), Interior Design Services (BPAHAKAB), Building Information Modeling (BIM) & Digital Design Services (BPAHAKAK)
Keywords
Where Linx Design Build is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Offices3 records
Markets served
Linx Design Build business model
Business model- GTM type
- B2B and B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Supply Chain, Marketing or Sales, Infrastructure
Revenue model
- Design & Build Services: Turnkey design and build services for residential and commercial projects including architecture, planning applications, structural engineering, and full construction delivery. Revenue is generated through fixed-price project contracts with staged payments tied to project milestones.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Multi-year contract | Home Extensions - Rear, Side, Wrap-Around, Double Storey |
| Unit Pricing | Multi-year contract | Loft Conversions - Dormer, Hip-to-Gable, L-Shaped, Mansard |
| Unit Pricing | Multi-year contract | Full House Renovations - Cosmetic to Major Structural |
| Unit Pricing | Multi-year contract | New Build Houses - Turnkey Residential Construction |
| Unit Pricing | Multi-year contract | Remodelling - Internal Reconfiguration |
| Unit Pricing | Multi-year contract | Conversions - Garage, Basement, Outbuilding |
Go-to-market motion3 records
Distribution channels4 records
Marketing channels8 records
Linx Design Build product offering
Product offeringCore offering
Linx Design Build is a London-based design and build contractor delivering turnkey residential and commercial construction projects — including home extensions, loft conversions, full house renovations, new builds, remodelling, basement/garage conversions, and commercial fit-outs. Services span architectural design, planning applications, structural engineering, multi-trade construction and handover under a single fixed-price contract with a 10-year structural guarantee, executed by a 60+ in-house team of designers, architects, project managers and tradespeople.
Product overview
Linx Design Build is a single unified construction service offering rather than a platform-plus-modules architecture. Their core offering is full design & build services delivered by a 60+ in-house team of designers, architects, project managers, and craftspeople. The portfolio comprises: Architecture (planning and design), Residential services (Home Extensions, Loft Conversions, Full House Renovations, New Build Houses, Home Remodelling, Basement Conversions), Commercial Fit-Outs, and a Design & Build turnkey service. Supporting tools include a Build Cost Calculator and Rear Extension Cost Estimator. All services include fixed pricing, 10-year structural guarantees, and are delivered through their 6-step process from consultation through to handover.
Differentiator
Problem solved
Functional benefit
Quantifiable outcome
- 98% of projects finish exactly when contracted - contractual completion dates never missed
- +4 more outcomes
Companies that use Linx Design Build
Customer profileNamed customers9 records
Segments3 records
Ideal customer profiles3 records
Linx Design Build technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Linx Design Build partnerships and signals
Strategic signalPartnerships
15 partnerships are on record, tiered core and minor.
- CHAS (Contractors Health and Safety Assessment Scheme)coreHealth and safety certification scheme demonstrating contractor compliance with health and safety requirements
- ConstructionlinecoreUK Government certification scheme for construction contractors
- NICEICcoreNational Inspection Council for Electrical Installation Contracting - electrical work certification
- Federation of Master BuilderscoreTrade association for building companies providing endorsement and consumer protection
- TrustMarkcoreGovernment-endorsed scheme for tradespeople and home improvement companies
- SafeContractorcoreHealth and safety certification for contractors
- Gas Safe RegistercoreOfficial gas registration body for gas safety in the UK
- NAPITcoreNational Association of Professional Inspectors and Testers - electrical and building safety certification
- RIBAcoreRoyal Institute of British Architects - professional body for architects
- ARBcoreArchitects Registration Board - statutory regulator for architects in the UK
- SMAS WorksafeminorContractor health and safety assessment service
- IWA – Independent WarrantycoreIndependent warranty provider backing their 10-year structural guarantee
- HomeProminorHome improvement professional network and referral service
- Freedom Homes ArchitectsminorArchitectural partner for specialized projects
- Extension PlansminorPlanning and extension design service partner
Scale indicators8 records
Recent moves3 records
Expansion highlights6 records
Linx Design Build competitors and assessment
Company assessmentDirect peers
- Inspired Dwellings: London-based residential design and build firm delivering extensions, renovations and full-home refurbishments with in-house architecture and construction teams — directly comparable integrated model and customer base to Linx.
- Simply Loft: London loft conversion and home extension specialist serving South East England homeowners — directly comparable niche service offering within the same operating geography as Linx.
- Stuart Barr Construction: London and South East residential construction and design-build firm delivering extensions, renovations and bespoke new homes — comparable mid-market residential design-and-build proposition in shared geography.
- Premier Loft Conversions: UK loft conversion and home extension specialist serving London and South East England — directly comparable niche offering in Linx's primary customer segment.
- Linear Design & Build: London design and build contractor delivering residential extensions, loft conversions and renovations — closely comparable scale, geographic focus and integrated architecture-plus-build model.
- Build Team: London design & build company focused on home extensions, loft conversions and renovations using an in-house architecture-led delivery model — overlaps with Linx on geography, services and integrated value proposition.
- Cube Loft Conversions: Greater London loft conversion and home extension specialist competing directly for the same residential renovation contracts in Linx's core market.
Broad incumbents
- Octagon: Established luxury residential new-build developer in London and the South East — broader portfolio of high-end homes and developments with overlapping design-build capability but a luxury/trophy-asset positioning distinct from Linx's mid-market extension focus.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Linx Design Build social profiles
Digital presenceLinx Design Build financial estimates
Financial estimateRevenue estimate
Valuation estimate
Linx Design Build leadership team
Management profileNumber of profiles
Linx Design Build funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Linx Design Build 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 Linx Design Build
What does Linx Design Build do?
Linx Design Build is a London-based design and build contractor delivering turnkey residential and commercial construction projects — including home extensions, loft conversions, full house renovations, new builds, remodelling, basement/garage conversions, and commercial fit-outs. Services span architectural design, planning applications, structural engineering, multi-trade construction and handover under a single fixed-price contract with a 10-year structural guarantee, executed by a 60+ in-house team of designers, architects, project managers and tradespeople.
Is Linx Design Build a public or private company?
Linx Design Build is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Linx Design Build founded?
Linx Design Build was founded in 2017. It employs 11 to 50 people.
Where is Linx Design Build based?
Linx Design Build is headquartered in London, United Kingdom, in the Europe region.
How does Linx Design Build make money?
One revenue line is on record: design & Build Services.
Who are Linx Design Build's main competitors?
Direct peers on record are Inspired Dwellings, Simply Loft, Stuart Barr Construction, Premier Loft Conversions, Linear Design & Build, Build Team and Cube Loft Conversions. Octagon is listed as a broad incumbent.
Does Linx Design Build have an API?
No public API is recorded for Linx Design Build.
What industry is Linx Design Build in?
Linx Design Build's product category is Design and Build Construction Services. Its primary akta.pro industry code is IMAFABAE, Residential Design-Build & Renovation-Integrated Builders, with a secondary code of IMAFAAAD, Design-Build / EPC General Contracting. Its NAICS code is 236118 and its SIC code is 1520.