“We were convinced we needed an extension. PlanBuild showed us we could get everything we wanted by working with the space we already had. Best £30 we ever spent.”Sarah & JamesHomeowners, Poole
Spring design slots filling fast — book your slot before they’re gone
Home extensions and renovations · Poole, Dorset
Extension Specialists.
Clarity for every step of your extension.
Renovation floor plans from £29.99. Extension projects from £250 — remote service, fixed price, no obligation.
✓ Money-back guarantee · No lock-in
Rear extensionSide returnOpen-plan kitchenWraparound
Trusted by Poole homeowners since 2017· 0800 056 7069
Where are you with your project?
Fixed prices, no surprises
Local team in Poole
Secure Stripe payments
48-hour delivery
Based in Poole since 2017
500+
Floor plans delivered
4.8★
Google rating
7 days
Average delivery
100%
Money-back guarantee
What you get
Everything included, nothing hidden
Every package has a fixed price and a clear list of deliverables. No hourly rates, no percentage fees.
Renovation Floor Plan
£29.99
- 2–3 professional layout options
- Before & after floor plans
- Drawn to scale by our Poole team
- Delivered to your private portal
- Unlimited revisions until happy
- Money-back guarantee
Extension Design Pack
From £250
- Site assessment & feasibility check
- Scaled floor plans & elevations
- Planning route recommendation
- 3D visualisation available
- Revision rounds included
- Money-back guarantee
Build-Ready Package
From £350
- Structural calculations
- Building regulations drawings
- Planning application support
- Party Wall guidance
- Builder introduction
- Single point of contact throughout
A structured path from sketch to handover
Your project, stage by stage.
Every stage is independently priced. Start anywhere, stop whenever you like. One team throughout.
Stage 1
See your new home before the first brick
From £29.99
Share your Rightmove link or some photos of your home. Tell us what you want — more light, a bigger kitchen, a playroom for the kids.
Our Poole-based drafters draw 2–3 professional floor plan options showing your home before and after. Not AI renders — real drawings by real designers. Delivered to your private portal within 7 working days.
This is where most projects start. For £29.99 you get clarity on what’s possible, and a drawing you can show your partner, your builder, or your bank.
Common concern: What if I don’t like it? Money-back guarantee — no questions asked.
Hands-on?Just need plans? Stop here — they’re yours to keep.
Time-poor?Want us to handle the next steps? Keep scrolling.
Before
Kitchen
Lounge
Dining
After
Open-plan kitchen & living
Utility
Study
Want to see what YOUR home could look like?
Stage 2
Review, refine, and choose your direction
Included with your plan
Your floor plan options land in a private portal. Review them at your pace — no sales calls, no pressure.
Tell us what to change. Want the island bigger? Need a utility room? We revise until you’re happy.
This is also where you decide how far to go. Some homeowners stop here with a great set of plans. Others ask us to handle structural engineering, planning permission, or building regulations.
Common concern: Am I locked in? No. Every stage is independently priced. Buy what you need, stop when you want.
Hands-on?DIY project? Take your plans to any builder.
Time-poor?Prefer one team? We’ll quote the next stage.
What matters most to you?
Stage 3
Structural calcs, planning permission, building regs — sorted
From £350
This is the part most homeowners dread. Will the council approve it? Do I need a structural engineer? What about Party Wall agreements?
We coordinate everything: structural calculations, planning applications, building regulations submissions, and any specialist surveys. Fixed prices at every step — no surprises.
You pick which services you need. Knocking through an internal wall? You might only need structural calcs (from £350). Full rear extension? We’ll handle the lot.
Common concern: Is this cheaper than hiring an architect? Yes — we combine design and technical work under one roof. No architect fees, no coordination headaches.
Hands-on?Know your way around planning? Just buy the bits you need.
Time-poor?First time? We guide you through every step.
What do you need?
Get a personalised quote — no obligation
Stage 4
One team from first sketch to final handover
Builder intro from £149
We introduce vetted local builders from our network — people we’ve worked with on dozens of Dorset homes. Not a directory. Not a marketplace. Our builders.
We stay involved through construction. Milestone payments, progress check-ins, and snagging reviews before you sign off. One accountable team from design to keys.
This is what makes PlanBuildCo different. We designed it, so we know exactly how it should be built.
Common concern: What if I already have a builder? That’s fine. Our plans work with anyone. But if you want accountability all the way through, we’re here.
Hands-on?Already have a builder? Our plans work with anyone.
Time-poor?Want the full package? One call gets everything moving.
Tell us about your project in 30 seconds
We’ll send a personalised roadmap with estimated costs and timeline for your area.
How we compare
Why homeowners choose PlanBuildCo
vs Hiring an architect + builder
Hiring an architect costs £2,000–£5,000 before a single brick moves. Then you find a builder separately and hope they interpret the drawings correctly. Two relationships, two invoices, no single point of accountability.
We design AND build. One team, one price, one point of contact. From first sketch to final handover.
vs Online plan tools
Floorplanner and RoomSketcher are fine for rearranging furniture. But they don’t produce buildable drawings, structural calculations, or planning applications. You still need a professional before any work starts.
Our plans are drawn by qualified drafters in Poole. They’re ready for builders, councils, and structural engineers — not just Pinterest.
vs Doing nothing
The biggest reason projects stall isn’t money — it’s not knowing where to start. Should I hire an architect? Do I need planning permission? How much will it really cost? The questions pile up and nothing happens.
Start with a £29.99 floor plan. Get clarity on what’s possible. No commitment to anything else.
Transparent pricing
How PlanBuildCo compares
Same outcome, different routes. See how our fixed-price approach stacks up against traditional methods.
Initial design / floor plans
PlanBuildCo
From £29.99
Architect
£2,000–£5,000
Builder
Not included
Extension design pack
PlanBuildCo
From £250
Architect
Included in fee
Builder
Not included
Structural calculations
PlanBuildCo
£350
Architect
£500–£1,500
Builder
£500–£1,500
Planning application
PlanBuildCo
£2,200
Architect
£1,500–£4,000
Builder
You arrange it
Building regulations
PlanBuildCo
£399
Architect
£500–£2,000
Builder
£500–£2,000
Builder introduction
PlanBuildCo
£149
Architect
You find your own
Builder
N/A
Design revisions
PlanBuildCo
Unlimited until happy
Architect
2–3 rounds typical
Builder
Not applicable
Single point of contact
PlanBuildCo
Architect
Builder
Fixed, transparent pricing
PlanBuildCo
Architect
Builder
Money-back guarantee
PlanBuildCo
Architect
Builder
Online portal for reviews
PlanBuildCo
Architect
Builder
Design to build handover
PlanBuildCo
Seamless — one team
Architect
You coordinate
Builder
Builder interprets plans
Typical timeline to start
PlanBuildCo
7 working days
Architect
4–8 weeks
Builder
Varies
Typical total design cost
PlanBuildCo
£30–£3,950
Architect
£3,000–£12,000+
Builder
£1,000–£3,000
Zero risk
Our guarantee to you
We remove the risk so you can focus on the project. If it doesn’t work out, you don’t pay.
100% money-back guarantee
Not happy with your floor plan? Full refund within 14 days, no questions asked. Your plans are yours to keep either way.
Fixed, transparent pricing
Every service has a published price. No hourly rates, no percentage fees, no surprise invoices. You know the cost before you commit.
No lock-in at any stage
Every stage is independently priced. Buy a floor plan and stop. Add structural calcs later. Go all the way to build. Your choice, your pace.
Real results
Real work on real homes.
RenovationVictorian Terrace Open-Plan Transformation
Poole, BH15
Challenge: The owners had a dark, narrow kitchen separated from the living room by a load-bearing wall.
Solution: We identified that removing a section of the load-bearing wall with a steel beam would open the space without any external building work.
Internal reconfiguration6 weeks£29.99
“We were convinced we needed an extension. PlanBuild showed us we could get everything we wanted by working with the spac...”— Sarah & James
ExtensionSingle-Storey Rear Extension with Garden Room
Bournemouth, BH8
Challenge: A young family needed more living space but had a tight budget and wanted to avoid a lengthy planning process.
Solution: We confirmed the extension fell within Permitted Development limits (under 4m for a single storey).
Single-storey extension4m x 6m (24m²)£2,400
“I was dreading the whole planning process. PlanBuild made it feel like ordering something online — choose what you want,...”— Mark
See it in action
From brief to floor plan in 60 seconds
Watch how a homeowner in Poole went from “we need more space” to a professional floor plan delivered to their portal.
Real people, real expertise
Meet the team behind your project
Every plan is drawn by qualified professionals in Poole — not outsourced, not AI-generated. These are the people who’ll work on your home.
J
Josh
Founder & Project Lead
8+ years experience
Founded PlanBuildCo in Poole to make home design accessible. Oversees every project from first sketch to builder handover.
S
Sarah
Lead Architectural Drafter
12 years experience
Qualified architectural technician. Draws every floor plan by hand — not AI-generated. Specialises in open-plan kitchen layouts.
T
Tom
Structural Engineer
15 years experience
Chartered structural engineer handling calculations for load-bearing removals, steelwork, and foundations across Dorset.
C
Claire
Planning Consultant
10 years experience
Former council planning officer. Navigates Permitted Development, conservation areas, and full planning applications.
Before you start
Common questions
Is £29.99 really the full price for a floor plan?+
Yes. You get 2–3 professional before-and-after floor plan options delivered to your private portal. No hidden fees. If you’re not happy, money back.
Am I locked into the whole build process?+
No. Every stage is independently priced. Buy just a floor plan, or add structural calcs, or go all the way to build. Stop whenever you like.
Are these plans actually usable by builders?+
Yes. Our plans are drawn by qualified architectural drafters, not AI. They include dimensions, annotations, and are ready for builders, structural engineers, and council submissions.
What if I already have an architect or builder?+
That’s fine. Many customers buy just the floor plan or just the structural calcs. Our deliverables work with any professional.
How is this different from using Floorplanner or RoomSketcher?+
Online tools are great for visualising furniture layouts. Our plans are professional architectural drawings suitable for planning applications, building regulations, and construction.
What’s the turnaround time?+
Standard delivery is 7 working days. Need it faster? Priority delivery is available as an upgrade at checkout.
Do you cover my area?+
We serve Dorset, Hampshire, and Wiltshire. Based in Poole, we know local planning authorities and building regulations inside out.
Buyer’s guide
10 things to check before hiring anyone
Whether you choose us or not, protect yourself. These are the questions most homeowners forget to ask.
1
Get a fixed price in writing
If anyone quotes “8–15% of the build cost” that’s an open-ended bill. Demand a fixed number before signing anything.
2
Understand the design process
Ask how the company produces your plans and what tools they use. Good firms are transparent about their workflow — modern technology often means faster delivery and lower cost for you.
3
Know what’s included before you pay
Get a clear scope of work in writing: how many layout options, what file formats you’ll receive, and what counts as an extra. Hidden extras are how cheap quotes become expensive projects.
4
Understand what “design” doesn’t include
A pretty drawing is not a building plan. Structural calculations, building regs drawings, and planning submissions are separate — and expensive if quoted later.
5
Verify their insurance
Professional indemnity insurance protects you if plans are wrong. Ask for the certificate — not just a claim on a website.
6
Ask about the planning route
Permitted Development vs full planning application changes your cost and timeline dramatically. A good designer checks this before you spend a penny on design.
7
Ask how you’ll be kept updated
Projects go wrong when communication stops. Ask whether you get a dedicated portal, regular updates, or just an email thread you’ll lose track of.
8
Check reviews on independent platforms
Website testimonials can be curated. Check Google, Trustpilot, or Checkatrade for reviews the company can’t edit or remove.
9
Ask who coordinates with the builder
The handover from design to build is where most projects go wrong. Find out who’s responsible for making sure the builder interprets the plans correctly.
10
Check the money-back guarantee
If you’re paying upfront, make sure there’s a written guarantee. A company confident in their work will offer your money back if the first deliverable doesn’t meet expectations.
Not ready to buy?
Use our free tools first.
Research your project with no commitment. Every tool is free — we only ask for your email to send the results.
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From the Knowledge Hub
Free guides to get you started
J
Meet the founder
Josh · Founder, PlanBuildCo
Founded in Poole in 2017 to make home design accessible. Every plan is reviewed by our team before delivery — real people drawing real plans for real homes.
As featured in
Dorset Echo
Checkatrade
Houzz
MyBuilder
Trustpilot
What homeowners say
Real results from real projects.
“I was dreading the whole planning process. PlanBuild made it feel like ordering something online — choose what you want, pay a fixed price, and it just happens.”MarkHomeowner, Bournemouth
Ready to see what’s possible?
Start with a £29.99 floor plan or a £250 design pack. No obligation, no lock-in, fixed prices.
Every plan drawn by qualified drafters in Poole, Dorset. Covering Dorset, Hampshire and Wiltshire.