Permitted DevelopmentDartford
Dartford: extension rescue and compliance reset
Rescued rear extension + compliance reset. PD route. 14 weeks.
Rear extension · Renovation
UK design & build · Permitted Development & planning
Know your planning route — then get it designed and built to a standard you can trust.
Maven helps you decide whether your project fits Permitted Development, needs an LDC, prior approval, or full planning — then delivers extensions, lofts, and renovations with clear communication. Already have planning? We can take your approved scheme through to completion.
- We help you choose the right planning route — PD, LDC, prior approval, or full permission.
- We can manage the whole journey from advice to design, approvals, and high-quality construction.
- Real projects, clear communication, and a client portal — so you are never left guessing.
Could your project use Permitted Development?
Answer a few questions. We will show whether PD looks possible, or if full planning is more likely — before you spend on drawings.
Prefer to talk first? Call 07721 026126. Or book a timed session on the Book page.
Real work
A project built properly — planning route included
See how we document routes and delivery — not just photos with no story.
Planning clarity
PD, LDC, prior approval, or full planning — we help you pick the lawful route
Getting the route wrong costs money and time. We map your house and brief to the rules that actually apply — whether that is Permitted Development, an LDC, prior approval, or a planning application. If you already have consent, we move on to design and build without redoing steps you have finished.
Find the right route
We check baselines, heights, boundaries, and local limits — before you lock in drawings.
Spot risks early
Listed buildings, Article 4, conservation areas, and tight plots — we flag what changes the answer.
Then build it properly
The same team can carry design, technical detail, and site work — so the finished job matches what was agreed.
Explore by goal
Find the right page for your situation
Jump to a focused guide — helpful for planning permission, PD checks, extensions, lofts, or build-only delivery.
Why Maven
Why homeowners choose Maven
Budget, time, and neighbours matter. We settle the planning question first — then build with the same care we put into the advice.
Planning and build in one place
We check PD and planning rules against your real plot — then build with care on structure, insulation, and finishes. Less guesswork, fewer nasty surprises on site.
One team, clear ownership
Design coordination, structure, and builders work together — so what we agree on paper is what we aim to deliver on site.
Straight updates
You get clear stages, sensible timing, and a client portal for payments and progress — so you are not left wondering what happens next.
Real projects to look at
We show actual jobs: routes, constraints, and how we work when access or neighbours are tight — before you commit.
What we do
Three ways we support your project — advice, design, and build
Planning advice only, design through approval, or design-and-build. If you already have planning, we focus on specification and delivery.
Advice & compliance
Permitted Development & planning
We help you choose PD, an LDC, prior approval, or full planning — with evidence that fits your plot.
Design & technical
Design & approvals
Surveys, drawings, specs, and coordination so what gets approved matches what can be built.
Site delivery
Build & construction
Extensions, lofts, renovations, and structural work — managed on site with quality checks and clear communication.
Prefer examples first? Browse case studies for real constraints and outcomes.
Already sorted planning?
Already have planning or approved drawings? We can build it.
If your permission is in place, we focus on specification, programme, and a high-quality build — clear updates, careful detailing, and a managed site. You do not need to go back through planning with us unless something has changed.
How it works
A clear path from first conversation to completion
Already have planning? We can pick up at detailed design or go straight to build — no unnecessary steps.
- 01
Consultation
We talk through your brief and site — and agree how much certainty you need before you pay for full design.
- 02
Route check
We match your project to PD, an LDC, prior approval, or full planning — and say plainly where local rules or the plot changes the answer.
- 03
Design & prep
Surveys, drawings, specs, and building control input — so approvals line up with what can be built.
- 04
Build
Managed programme on site: quality checks, tidy sequencing, and regular updates — extensions, lofts, renovations, and structural work.
Proof on site
More projects — how we plan and build
Each summary explains the planning route and what happened on site — so you see real constraints, not only finished photos.
Lawful Development CertificateBromleyLoft dormer in Bromley (LDC for certainty)
Loft dormer with ensuite. LDC route. 12 weeks.
Loft conversion
Planning approvalChelmsfordBungalow loft in Chelmsford (planning route)
Bungalow loft conversion. Planning route. 18 weeks.
Loft conversion
Permitted DevelopmentSevenoaksRear extension in Sevenoaks (Permitted Development)
New kitchen-diner + utility. PD route. 14 weeks.
Rear extension
Reviews
What clients say
Scores and quotes from Checkatrade (below) and Google. Open each platform for the full history.
Google
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Checkatrade
9.92/ 1013 reviews
Vetted trade platform — all reviews on our public profile.
Checkatrade10/10
Amazing result work for my house extention !!!
We recently completed a house extension and are very happy with the results. The work was done to a high standard, finished quickly, and stayed within budget. We also received the final Building…
March 2026
Checkatrade9.67/10
Excellent House Renovation
We recently had our house renovated at Victoria avenue, Southend on sea and very satisfied with Maven team. Everything was explained clearly and done as promised, also on given time frame. We are…
January 2026
Checkatrade10/10Verified
Side extension
We're very pleased with Maven Design and Build for our triangular extension with a flat GRP roof. The project was completed on time and met all our expectations. We'd happily recommend them to anyone.
June 2025
Client experience
Your dedicated client portal
Every build gets a private dashboard — payments, stages, and site photos in one place. No guessing where your job stands.
- Payments and totals against your quote
- Stages marked clearly as work progresses
- Photos from site, organised by stage
Prefer to talk before you book? Call or message us — or lock in a consultation when you are ready.
Call Maven Design & Build on 07721 026126
Ready to talk about your project?
We will help you see the lawful route for your plot, what good delivery looks like, and how we can take it to a finished build — with clear communication throughout.