Expanding your living space can be both exciting and daunting. The right choice means more comfort, better use of space, and a boost in your home’s value. Every project needs thoughtful planning, careful budgeting, and the assurance that your vision will be carried out with skill. Some services promise bespoke design. Others aim for simplicity, clear pricing, or the convenience of a single project manager. You might be surprised at the differences in how these solutions handle everything from planning permission to protecting your build long after the dust has settled. Ready to see how different approaches can shape your plans for a bigger and better home
Table of Contents
- Reltic Extend
- Simply Extend
- Valuxhome.com
- The Market Design & Build
- Plus Rooms
- Clapham Construction Service
Reltic Extend
At a Glance
Reltic Extend is a specialist designer‑builder for bespoke home extensions across London and Surrey, combining more than 20 years of experience with a clear, stage‑by‑stage approach to pricing and project management. They manage everything from initial concept and planning permissions to construction and a 10‑year structural warranty, which makes them a reassuring choice for homeowners who value certainty and quality. If you want to expand without moving, Reltic Extend is set up to minimise disruption and maximise long‑term value.
Core Features
Reltic Extend offers end‑to‑end extension services, specialising in rear, kitchen, side, wraparound and double‑storey projects tailored to London properties. Key capabilities include bespoke design and construction, fixed stage‑by‑stage pricing to avoid hidden costs, and full handling of planning permissions and building regulations on your behalf. Every project comes with a 10‑year structural warranty and six months of aftercare support, while the site provides practical tools such as a cost calculator and design tips to help you plan before you commit.
Pros
- Decades of experience: The team brings over 20 years of experience, delivering proven expertise on London properties.
- Transparent pricing model: Fixed stage‑by‑stage pricing reduces the risk of surprise costs during the build.
- Planning and compliance handled: Reltic Extend manages all planning permissions and building regulations, saving you time and stress.
- Strong referral record: More than 60% of projects stem from referrals, which demonstrates high customer satisfaction.
- Warranty and aftercare: A 10‑year structural warranty plus six months’ aftercare support underlines their commitment to lasting quality.
Who It’s For
Reltic Extend is ideal for London homeowners, families and property investors who want a reliable, comprehensive service for bespoke extensions. If you need someone to lead design, secure planning consent, and manage construction while keeping costs transparent, this is the right fit. Perfect for those looking to increase living space or add value without the uncertainty of multiple contractors.
Unique Value Proposition
Reltic Extend’s strength lies in combining local market knowledge with a transparent, managed process. The firm focuses on modern, functional and stylish improvements specifically suited to London properties, prioritising durability, legal compliance and seamless delivery. Their stage‑by‑stage pricing and full handling of permissions mean you get a predictable budget and a single accountable partner from concept to completion — a meaningful advantage over fragmented supply chains and cost‑uncertain builders.
Real World Use Case
Imagine a North London family wanting a larger kitchen and open living area; Reltic Extend would design a bespoke layout, submit and manage planning applications, quote through fixed stages, oversee construction and hand over with a 10‑year structural warranty. Minimal involvement required from the family; maximum clarity and value delivered. Simple.
Pricing
Pricing is delivered as stage‑by‑stage fixed costs with no hidden charges; specific figures vary according to project scope and type, reflecting the bespoke nature of each extension.
Website
Website: https://relticextend.co.uk
Simply Extend
At a Glance
Simply Extend specialises in bespoke home, kitchen and side-return extensions across London and the West Midlands, offering a full-service approach from design through to delivery. Their strength lies in transparent, fixed pricing, insurance-backed deposits and a 10-year warranty that brings real peace of mind. If you want a managed, end-to-end project with experienced teams and proven customer satisfaction, they are a strong contender. Expect clarity, not surprises.
Core Features
Simply Extend delivers tailored extension designs that respond to individual needs, with a range of extension types including side return, wraparound, rear and double-storey options. Projects are managed by a dedicated project manager and supported by customer service throughout the build, while fixed pricing aims to remove financial uncertainty. All projects carry a 10-year warranty and insurance-backed deposits, reinforcing their emphasis on quality and client protection.
Pros
- Proven track record: They report thousands of successful projects, which suggests dependable experience across common extension scenarios.
- High customer satisfaction: Positive testimonials indicate a consistent focus on client needs and finishing quality.
- Insurance-backed protection: Deposits and warranties are insurance-backed, offering an extra layer of security for homeowners.
- Transparent pricing: Fixed prices are designed to eliminate the usual cost surprises associated with extensions.
- Comprehensive service: From initial design to completion, their full-service model simplifies communication and accountability for clients.
Cons
- Limited online pricing detail: Specific price points and package breakdowns are not published on the website, making initial budgeting less straightforward.
- Geographical focus: Their primary coverage of London and the West Midlands may exclude homeowners outside these areas.
- Sparse timeline information: The website does not provide detailed project schedules or staged cost breakdowns, which can make planning harder for time-sensitive families.
Who It’s For
Simply Extend is ideal for London and West Midlands homeowners who want to increase space and value without the hassle of managing multiple contractors. It suits families seeking open-plan kitchens or rear extensions, investors wanting to add market value, and anyone who prioritises transparent pricing, warranties and a single point of contact throughout the build.
Unique Value Proposition
What sets Simply Extend apart is the combination of bespoke design, fixed-cost transparency and long-term warranty cover. These elements together reduce the usual anxieties around extensions: unclear costs, variable workmanship and warranty gaps. In short: they offer a predictable, professionally managed route to adding living space.
Real World Use Case
Imagine a family in South London who want a larger kitchen and living area. Simply Extend would design a rear extension to open the ground floor, manage planning and construction, and deliver the project on a fixed-price basis while providing a 10-year warranty and insurance-backed deposit—helping the family maximise space and increase property value.
Pricing
Fixed prices are offered, but specific cost details are not disclosed online; you will need to contact Simply Extend for a tailored quote and project estimate.
Website: https://simplyextend.co.uk
Valuxhome.com
At a Glance
Valuxhome.com is a premium domain name offered for sale by Huge Domains, a seller active since 2005. The listing is straightforward: you can buy outright or spread the cost over a 24-month, 0% interest plan, with domain access often granted within 1–2 hours. It suits businesses and individuals building a home, lifestyle or interior-facing brand who value speed, security and flexible payment terms. Bottom line: a memorable domain with low friction purchasing, but you should budget separately for hosting and design.
Core Features
The service focuses on friction-free acquisition and secure transactions. Key capabilities include an immediate purchase option or a 24-month interest-free instalment plan, a 30-day money-back guarantee, and rapid domain access typically within 1–2 hours after purchase. Transactions are protected by SSL and payment options include PayPal and Escrow.com, while privacy protection and support for future domain transfer to registrars such as GoDaddy are offered once full payment is complete.
Pros
- Flexible payment options allow buyers to start a 24-month instalment plan at 0% interest, which helps manage cash flow without extra finance charges.
- Secure and fast domain access means you can often begin building a site within 1–2 hours of purchase, minimising downtime.
- A 30-day money-back guarantee provides a safety net if the domain does not meet expectations or branding needs.
- The domain is sold by Huge Domains, a seller with a track record since 2005, which lends credibility and a history of customer testimonials.
- Privacy protection is available to shield personal information during ownership, which is useful for small businesses and sole traders.
Cons
- Additional services such as email hosting or web design are not included, so total launch costs will be higher than the listed domain price.
- If you choose the instalment plan, you cannot transfer the domain to another registrar until all payments are completed, which may restrict immediate migration plans.
- The listing provides limited detail on extra domain-related services or bespoke customisation, so you may need to source third-party suppliers for ongoing support.
Who It’s For
Valuxhome.com is ideal for startups, small businesses and individuals aiming to build a home, décor or lifestyle brand who want a concise, brandable domain and prefer flexible payment terms. It particularly suits buyers who need quick online presence and value the reassurance of a reputable seller.
Unique Value Proposition
The proposition is simple: a memorable, keyword-friendly domain backed by rapid access, secure payment methods and a 30-day satisfaction promise from an established seller. It removes typical friction around domain purchase and offers a pay-as-you-go option without interest.
Real World Use Case
A home décor startup could acquire Valuxhome.com on the 24-month plan to preserve cash flow, gain the domain within hours, and begin branding and marketing while settling payments. It provides fast legitimacy and easier customer recall for product launches.
Pricing
Buy now for $2,595 or start a 24-month payment plan at $108.13/month.
Website: https://valuxhome.com
The Market Design & Build
At a Glance
The Market Design & Build is a London-based design and build practice that offers a full end-to-end service for home extensions, loft conversions, refurbishments and new builds. They have completed hundreds of bespoke projects and carry a strong reputation supported by awards and over 700 favourable reviews. If you want a single point of accountability from concept to completion, they deliver a compelling, professionally managed route — though you should expect bespoke costs to reflect that level of service.
Core Features
The company provides an integrated service covering consultation, planning, design and build, all delivered by an in-house professional team. Their expertise spans single- and double-storey extensions, loft and basement conversions, complete refurbishments and new builds. The business emphasises bespoke solutions tailored to each property, and highlights recognition through awards and a substantial volume of positive client feedback as evidence of consistent delivery.
Pros
- Comprehensive, single-source service: They manage projects from first consultation through planning and construction, which simplifies communication and reduces coordination risk.
- Experienced in-house team: The work is handled by a dedicated professional team rather than a patchwork of subcontractors, which helps maintain quality and continuity.
- Proven track record: With hundreds of bespoke projects completed and over 700 favourable reviews, the company demonstrates repeatable delivery and client satisfaction.
- Wide range of project types: Whether you need a loft conversion, rear extension, basement or full refurbishment, they cover the main residential project categories.
- Transparent credentials: Awards and public reviews are used to support their credibility, making it easier for you to assess their experience.
Cons
- No transparent pricing on the website: The site does not publish specific pricing, so you will need to request a bespoke estimate to understand cost.
- Limited timeline information: There is little detail on typical project durations on the homepage, which makes it harder to set expectations before enquiry.
- Potentially higher cost for bespoke service: A fully managed, bespoke offering often comes with premium fees compared with more limited builders or design-only practices.
Who It’s For
This firm suits London homeowners seeking a professional, hassle-minimised approach to sizeable home projects — especially those who value design-led, bespoke outcomes and are prepared to invest for quality and project management. It is particularly relevant if you want one team to handle planning applications and construction without passing responsibility between multiple firms.
Unique Value Proposition
Their core strength is end-to-end accountability: a single, experienced team taking ownership of design, planning and build. That reduces points of friction and provides a clear line of responsibility from concept to completion, backed by a strong portfolio and client praise.
Real World Use Case
Imagine a homeowner in west London who wants a rear extension and a loft conversion to add living space and an extra bedroom. The Market Design & Build would design the concept, submit planning where required, and manage the build, delivering a coordinated project with one contact overseeing each stage.
Pricing
Not specified on the website; prospective clients must request a tailored estimate to receive exact costs.
Website: https://themarketdesignbuild.com
Plus Rooms
At a Glance
Plus Rooms is a London and Surrey specialist in bespoke design and build home extensions, offering end-to-end project management from planning through to the finishing touches. They prioritise modern, functional and stylish outcomes and have a strong recommendation-driven reputation. If you want a single team to coordinate design, permissions and construction, Plus Rooms is a compelling option. Expect quality workmanship, though timings and final cost can be affected by external issues.
Core Features
Plus Rooms delivers bespoke house extensions including side, rear, wraparound and flat-roof options, coupled with full project management that covers planning permission and permitted development processes. Their service includes design consultation and bespoke reports, and they operate across multiple London boroughs and Surrey, so they understand local planning quirks. The firm handles the practicalities you don’t want to manage: coordinating architects, permissions and contractors so the project moves steadily from concept to completion.
Pros
- High standard of workmanship and finish is evident in their completed projects, which tend to look contemporary and well executed.
- An experienced and professional team leads the process, reducing the number of decisions you personally need to make.
- Comprehensive project management means Plus Rooms will handle planning and permissions on your behalf, saving time and stress.
- Good communication and transparency are reported during projects, helping homeowners keep on top of progress and costs.
- High customer satisfaction, evidenced by reviews, indicates a consistent ability to meet client expectations when the brief is clear.
Cons
- Projects can overrun or face delays due to external factors, which means completion dates are not guaranteed.
- Cost may increase if scope creep occurs or unexpected issues arise, so provisional budgets can move.
- Some clients mentioned the need for clearer direct communication with architects, which suggests design-phase interactions can occasionally be fragmented.
Who It’s For
Plus Rooms suits homeowners in London or Surrey who want a high-quality, bespoke extension delivered by a single, accountable team. It is ideal if you value a streamlined process that includes planning, design and construction management rather than managing multiple contractors yourself. It is less suited to buyers seeking the absolute lowest price or those who expect fixed completion dates irrespective of unforeseen site conditions.
Unique Value Proposition
The principal strength of Plus Rooms is its integrated approach: design-led extensions combined with practical, hands-on project management that navigates planning and construction within London and Surrey. That one-stop service reduces the coordination burden on you and increases the chance of a cohesive final result.
Real World Use Case
A family in London wants a bespoke rear extension and loft conversion to create an open-plan kitchen and extra bedrooms. Plus Rooms would manage the design, submit planning or permitted development applications, coordinate contractors and oversee the build so the family can focus on day-to-day life while the project progresses.
Pricing
Pricing details are not specified on the website and likely vary according to project scope, site conditions and specification choices.
Website: https://plusrooms.co.uk
Clapham Construction Service
At a Glance
Clapham Construction Service is a London-based builder with over 20 years’ experience in loft conversions and home extensions. They promise comprehensive project management, fixed pricing and a 10-year protection warranty, which makes them a reassuring choice for homeowners who prioritise certainty and accountability. If transparent timelines and a clear scope matter to you, they score highly; if you need detailed published price lists, you may prefer to request a consultation first.
Core Features
Clapham specialises in loft and home extensions and offers free initial consultations to assess feasibility and scope. Their service covers full project management with on-site supervision, bespoke design options tailored to individual properties, and a 10-year protection warranty that underpins build quality. Crucially, they guarantee fixed pricing agreed at the start, aiming to remove unexpected cost spikes during construction.
Pros
- Two decades of experience: With over 20 years operating in the London market, Clapham brings deep knowledge of local planning and construction practicalities.
- High customer satisfaction: Numerous positive reviews indicate consistency in delivery and happy clients, which is vital when entrusting a major home project.
- End-to-end project management: They manage design, planning and on-site work, reducing the number of contractors you need to co-ordinate.
- Transparent, fixed pricing: Prices are guaranteed at the outset, helping you budget with confidence and avoid surprise bills.
- 10-year protection warranty: A decade-long warranty provides long-term peace of mind about structural work.
Cons
- Limited public detail on pricing and scope: Specific costs for different project types are not listed on the website, so you must book a consultation for accurate figures.
- Information primarily from website and reviews: The available content relies on promotional material and testimonials rather than independent third-party reports.
- Post-completion services unclear: Apart from the warranty, the extent of aftercare or follow-up services is not detailed on the site.
Who It’s For
This company is well suited to London homeowners and investors who want a single, experienced team to handle a loft conversion or home extension from concept to completion. If you value a fixed-price arrangement, on-site supervision and a documented warranty, Clapham is a sensible option. If you prefer fully itemised online pricing before any contact, prepare to book a free consultation instead.
Unique Value Proposition
Clapham’s main strength is reliability: decades of London experience combined with guaranteed fixed pricing and a 10-year protection warranty. That combination reduces financial and logistical uncertainty—exactly the reassurance many homeowners need when committing to major home expansion.
Real World Use Case
A family in south London wants to add a loft conversion and extend the rear ground floor to create an open-plan kitchen-diner. Clapham would assess the property in a free consultation, propose bespoke designs, agree a fixed price and oversee the build with on-site supervision, handing over a completed space covered by a 10-year warranty.
Pricing
Fixed and guaranteed prices are established at the start of the project; specific costs are discussed during the free consultation.
Website: https://claphamconstructionservice.com
Home Extension Services Comparison
This table summarizes key information about several home extension service providers, making it easier for you to compare their offerings, features, and unique value propositions.
| Provider | Core Features | Pros | Cons | Website |
|---|---|---|---|---|
| Reltic Extend | End-to-end bespoke design, fixed stage pricing, planning handled, 10-year warranty, six months aftercare | 20+ years’ experience, transparent pricing, high referral rate, full compliance management, strong aftercare and warranty | Not specified | relticextend.co.uk |
| Simply Extend | Bespoke designs, fixed pricing, dedicated project manager, 10-year warranty, insurance-backed deposits | Thousands of projects, high satisfaction, insurance-backed protection, comprehensive service | Limited online pricing detail, geographical limit, sparse timeline info | simplyextend.co.uk |
| Valuxhome.com | Immediate domain purchase, 24-month plan, 30-day money-back guarantee, SSL-secured transactions | Flexible payment plans, rapid domain access, money-back guarantee, privacy protection | Costs for extras not included, transfer restrictions on plan, limited domain-specific services | valuxhome.com |
| The Market Design & Build | Integrated design and build, in-house team, wide range of projects, award-winning, bespoke solutions | Comprehensive service, experienced team, proven track record, transparent credentials | No published pricing, limited timeline info, potentially higher costs | themarketdesignbuild.com |
| Plus Rooms | Bespoke extensions, full project management, local planning expertise | High workmanship, strong management, comprehensive service, good communication | Project overruns possible, cost increases with scope changes, fragmented design communication | plusrooms.co.uk |
| Clapham Construction | Loft and home extensions, free consultations, fixed pricing, on-site supervision, 10-year warranty | 20 years’ experience, positive reviews, end-to-end management, transparent pricing | Limited pricing detail publicly, promo-based information, unclear aftercare | claphamconstructionservice.com |
Find the Best Kitchen Extension Solution for Your Home
Choosing the right kitchen extension company can feel overwhelming. The article highlights key challenges such as transparent pricing, effective project management and a trustworthy partner who handles all planning permissions without surprises. Many homeowners want to expand their living space without relocating but worry about hidden costs and delays. If you share these concerns and seek a bespoke, stress-free kitchen extension tailored to London or Surrey properties, there is a clear solution.
At Reltic Extend, we combine over 20 years of local expertise with a stage-by-stage pricing model that ensures no unexpected expenses. Our service covers design, planning permissions and full construction management while offering a 10-year structural warranty that guarantees lasting quality. For inspiration and practical suggestions, explore our Extension Inspiration & Ideas for Your Home and Design & Build Tips for Home Extensions. Ready to take the next step towards your perfect kitchen space? Contact our team directly at Reltic Extend Contact to start your personalised consultation today and enjoy peace of mind on your home extension journey.
Frequently Asked Questions
What factors should I consider when choosing a kitchen extension company?
Choosing a kitchen extension company involves evaluating their experience, expertise in design, project management capabilities, and customer reviews. Begin by listing your preferences and budget, then compare how different companies align with your requirements.
How do kitchen extension companies handle planning permission?
Most kitchen extension companies manage the planning permission process on your behalf. This can include submitting applications and ensuring compliance with local building regulations, allowing you to focus on the design elements of your project.
What are the typical timelines for a kitchen extension project?
Timelines for a kitchen extension can vary significantly, but you can generally expect the planning and construction to take anywhere from 3 to 6 months. To get a better estimate, consult with your chosen company early in the discussion to align timelines with your expectations.
How are costs structured in kitchen extension projects?
Costs for kitchen extensions are typically structured as fixed stage-by-stage prices. Request a detailed breakdown to ensure clarity and anticipate costs over the course of your project to avoid surprise expenses.
What type of warranties should I look for when hiring a kitchen extension company?
Look for companies that offer comprehensive warranties, ideally lasting at least 10 years, covering structural integrity. Make sure to ask for details on the warranty coverage before signing any contracts to ensure long-term peace of mind.
Can I get bespoke designs for my kitchen extension?
Yes, many kitchen extension companies offer bespoke design services tailored to your preferences and property layout. Engage with designers early in your project to articulate your ideas and ensure the final design meets your vision.
