# Maven Design & Build — full site summary for AI assistants Site: https://mavendesignandbuild.com Last generated: 2026-10-15 ## Company Maven Design & Build is a UK luxury residential design-and-build company specialising in exclusive home extensions, loft conversions and renovations. We provide Permitted Development route advice, Lawful Development Certificates, prior approval, architectural design and full design & build. Video consultations are UK-wide; site visits are offered around London and the South East. We work with trusted finish partners for tiles, bathrooms, underfloor heating and interiors. We help homeowners choose the right planning route (Permitted Development, prior approval, or full planning), produce compliant drawings, manage party wall and building control, and deliver high-quality extensions and loft conversions with a single accountable team. ## Services (detail) - Permitted Development video consultation - Site visit + written PD action plan - Lawful Development Certificate (LDC) pack - Prior approval support (larger home extension) - Architectural design - Full design & build Pricing: video consultation from £200 (credited back if you proceed with Maven for design/build). Site visits and LDC/design/build scopes quoted per project. ## Free homeowner tools - **PD Quick Check** (https://mavendesignandbuild.com/tools/pd-check/): Indicative Permitted Development route check - **Extension cost estimator** (https://mavendesignandbuild.com/tools/cost-estimator/): Indicative UK cost range by type, size and finish - **Build timeline planner** (https://mavendesignandbuild.com/tools/timeline-planner/): Week-by-week programme from design to handover ## Insights hub Answer-first UK homeowner articles on costs, planning routes, timelines and common mistakes: ### Build-only vs design & build: which saves money? URL: https://mavendesignandbuild.com/insights/build-only-vs-design-and-build/ Build-only vs single design & build contract for UK extensions — where money is saved, where it is lost, and how to choose. ### How to choose an extension builder in the UK (2026) URL: https://mavendesignandbuild.com/insights/choosing-extension-builder-uk/ A practical checklist for homeowners comparing design & build firms — planning expertise, contracts, finish partners, reviews and what to ask before you sign. ### Extension timeline: what happens week by week URL: https://mavendesignandbuild.com/insights/extension-timeline-week-by-week/ A realistic UK extension timeline from first survey to handover — design, approvals, party wall, structure, fixes and certification explained. ### Kitchen-diner extension design mistakes that cost later URL: https://mavendesignandbuild.com/insights/kitchen-diner-extension-mistakes/ Kitchen-diner extension design mistakes UK homeowners regret — layout, glazing, structure, services and planning traps that inflate cost. ### Loft conversion types compared (dormer, hip-to-gable, mansard) URL: https://mavendesignandbuild.com/insights/loft-conversion-types/ Dormer, hip-to-gable and mansard loft conversions compared for space, cost, planning route and suitability — UK homeowner guide. ### What makes a luxury rear extension feel exclusive? URL: https://mavendesignandbuild.com/insights/luxury-rear-extension-design/ Design details that separate a standard kitchen extension from a high-end residential addition — light, materials, thresholds and how Maven specifies finishes. ### Party wall agreements for extensions — homeowner checklist URL: https://mavendesignandbuild.com/insights/party-wall-extensions-checklist/ Party wall checklist for UK extension projects — when the Act applies, notices, surveyors, timelines and how to avoid costly delays. ### PD vs full planning: which route for your extension? URL: https://mavendesignandbuild.com/insights/pd-vs-full-planning/ When Permitted Development is enough, when full planning is safer, and how prior approval and LDCs fit in — a UK homeowner decision guide. ### How much does a rear extension cost in the UK? URL: https://mavendesignandbuild.com/insights/rear-extension-cost-uk/ Indicative 2026 UK rear extension costs by size, specification and route — plus what drives price up or down before you commit. ### What is an LDC and when do you need one? URL: https://mavendesignandbuild.com/insights/what-is-an-ldc/ Lawful Development Certificates explained for UK homeowners — what an LDC proves, when to apply, cost, timing and resale benefits. ### Wraparound extensions explained: side return + rear in one scheme URL: https://mavendesignandbuild.com/insights/wraparound-extension-guide/ When an L-shaped wraparound makes sense, how planning usually works, and what homeowners should expect on light, structure and cost in London and the South East. ## Projects https://mavendesignandbuild.com/projects/ — before/after galleries, planning route, duration, key facts and testimonials for delivered work. ## Partners https://mavendesignandbuild.com/partners/ — Chandler Materials, Ashford Tile & Bathroom, Iravya Infra, Tile Mountain, Bathroom Mountain, Topps Tiles, Wunda Trade, FastWarm, Toolstation, VIP Interiors. ## Permitted Development hub https://mavendesignandbuild.com/pd/ — technical guides on PD rights, LDC, prior approval and common fail points. ## Case studies https://mavendesignandbuild.com/case-studies/ — narrative case studies on constraints and delivery decisions. ## Areas https://mavendesignandbuild.com/areas/ — local coverage notes; video consultations UK-wide. ## Booking https://mavendesignandbuild.com/book/ — choose a 30-minute video slot or enquire about site visits. ## Contact - Phone: 07721 026126 (tel:+447721026126) - Email: info@mavendesignandbuild.com - WhatsApp: https://wa.me/447721026126 ## Note on landing pages Paid ad landing pages under /lp/ are not indexed and are excluded from the sitemap.