London New Builds – FAQs, Costs, Timelines and Options with TNK Construction
- Tim Gjana
- Jul 7
- 4 min read
Updated: Aug 8
Planning a new build in London is a major investment of time, money, and vision. Whether you are a homeowner looking to create your forever home or a property investor exploring high-demand locations, understanding the most common — and less obvious — questions can make a world of difference. From new build cost in London to planning permissions and construction timelines, this comprehensive FAQ blog gives you the guidance you need to start your journey right.
To get a free quote today from TNK Construction,
call us on 020 8128 9485, or email info@tnkltd.co.uk.
What Is the Average New Build Cost in London?
The cost of building a house in London depends on factors like size, location, design complexity, and finish level.
However, for a well-designed home built to modern energy standards, you can expect to pay:
£2,000 to £3,500 per square metre for standard builds
£3,500 to £5,500+ per square metre for high-end or complex designs
Additional costs include planning, architect fees, surveys, and site-specific requirements. TNK Construction provides full cost transparency in its proposals, so there are no surprises along the way.
What Is the Typical New Build Project Timeline in the UK?
The new build project timeline in the UK typically ranges from 6 to 18 months depending on the project scope. TNK's three-stage process helps keep everything on track:
Initial Assessment (4–8 weeks): Consultation, site visit, and proposal development
Construction Phase (6–12 months): Includes site prep, structural build, and finishing
Post-Construction (2–4 weeks): Final inspection, documentation, and handover
TNK uses detailed planning and progress checks to ensure on-time delivery, even in busy boroughs like Islington, Hackney, or Croydon.
Do I Need Planning Permission for a New Build?
Yes. All new builds require full planning permission from your local authority. This involves submitting architectural plans, design statements, and impact assessments.
For builds in conservation areas or involving listed buildings, additional permissions and design considerations apply. TNK offers expert support during the planning phase and works closely with local planning teams to secure timely approvals.
What Are the Main Types of New Build Projects?
TNK Construction offers a range of new build solutions:
Detached and semi-detached family homes
Terraced townhouses
Flats and apartment blocks
Mixed-use developments
Whether it’s a contemporary home in Wimbledon or a six-flat development in Richmond, TNK tailors every build to the client’s lifestyle, investment goals, and site-specific constraints.
How Does TNK Construction Stand Out?
With over 150 completed projects, TNK Construction combines design ambition with site practicality. Founded by Tim Gjana, the company has over 17 years of experience in new build construction across London. Their team of CITB-accredited builders, joiners, and project managers ensures craftsmanship and cost-efficiency at every stage.
From Islington refurbishments to custom new builds in Hampstead, TNK delivers:
Transparent communication
Full project management
Local planning expertise
Bespoke design and build capability
View the Richmond flats project or read our Islington transformation case study for proof.
Is It Cheaper to Build or Renovate in London?
It depends. Renovations are often cheaper upfront but can uncover hidden issues like outdated wiring, poor insulation, or damp. New builds give you full control over design, layout, and energy efficiency from the start, often leading to lower long-term costs and fewer compromises.
TNK helps clients compare new build vs renovation options to make the best financial and lifestyle decision.
Are Modular and Eco Builds Available?
Yes. TNK specialises in modular new build options, as well as sustainable and energy-efficient construction techniques. We stay at the forefront of the UK’s evolving construction landscape.
Follow us on Instagram for more insights, team stories, and build updates.
What Does TNK’s New Build Process Look Like?
1. Initial Assessment
Consultation to align on vision and goals
On-site inspection
Detailed proposal including new build cost London estimates
2. Construction Phase
Planning coordination
Structural, mechanical, and electrical works
Interior finishing with client-approved materials
3. Post-Construction
Quality inspection
Compliance documentation
Handover meeting and client aftercare
This structured process ensures accuracy, control, and high standards throughout the new build project timeline UK.
Is Summer a Good Time to Start a New Build?
Yes. Summer offers ideal weather for groundworks, insulation, and roof fitting. TNK maximises the advantages of summer construction to fast-track your build without compromising on quality.
Can I Visit Past TNK Projects?
Absolutely. We regularly invite prospective clients to tour completed builds and meet previous homeowners. Hear directly from one of our Islington clients in our recent testimonial video.
What Should I Do Next?
If you’re serious about building a new home in London, now is the time to get started. With TNK, you gain a trusted, experienced team that offers full support from concept to completion.
Call 020 8128 9485 or email info@tnkltd.co.uk to book your free consultation.
FAQ: New Builds in London
1. What is the cost of a new build in London in 2025?
Costs vary but typically range from £2,500 to £5,500 per square metre, depending on finish level and location.
2. How long does a new build take to complete?
Standard builds take 6 to 18 months from design to handover, depending on scale and approvals.
3. What permissions do I need?
You’ll need full planning permission and compliance with Building Regulations. TNK handles applications, design coordination, and council submissions.
4. Are modular new builds faster?
Yes, modular homes allow for simultaneous off-site construction and on-site groundwork, making them faster and more predictable.
5. Why choose TNK over other builders?
TNK brings two decades of London-specific experience, transparent project delivery, and a commitment to quality that’s seen in every build.
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