Residential building specialists · Poole & surrounding areas

Beautifully built.
Properly managed.

Extensions, renovations and new homes delivered with clear costs, careful workmanship and one accountable team.

Request a site visit ↗Explore recent work ↓

0% finance availableBuild your estimate and ask us for details →Subject to status, eligibility and lender approval. Terms apply.

Build cost calculator

Shape your project.
See the allowance.

Create an early budget using our August 2026 BCP residential extension rates. Labour, materials, ordinary plant, rubbish removal and VAT are included unless a line says otherwise.

Indicative, not a quotationGround conditions, access, drawings and product choices can change the final price. A measured survey is required before a fixed proposal.

01 Project & dimensions

Planning routeBuilding typeWidth (m)Length / projection (m)

Permitted development may avoid a planning application, but Building Regulations approval can still be required.

Choose the exterior wall finish

Every option uses a standard thermal-block inner leaf. Select what customers will see outside.

Cutaway of a rendered block cavity wall with insulation and thermal-block inner leaf

Rendered block exteriorFull rendered finish over external block. Thermal block inside. Cutaway of a cavity wall with facing brick below, rendered block above, insulation and thermal-block inner leaf

Cutaway of a cavity wall with facing brick below, rendered block above, insulation and thermal-block inner leaf

Brick + render exteriorFacing brick to the bottom half, render above. Thermal block inside. Cutaway of a facing-brick cavity wall with insulation and thermal-block inner leaf

Cutaway of a facing-brick cavity wall with insulation and thermal-block inner leaf

Facing-brick exteriorFull brick finish. Thermal block inside.

02 Structure, floor & roof

Choose the insulated floor

Both options include 120 mm PIR insulation and screed.

Block-and-beam insulated floor construction

Block-and-beam floorSuspended structural floor with screed. Insulated concrete slab and screed floor construction

Concrete slab & screedGround-bearing slab, insulation and screed.

Internal structural workWall demolition, temporary support and steel

Wall opening width (m)Wall opening height (m)

The steel length is calculated automatically as the wall opening width plus 500 mm for bearing.

Structural price warningThis allowance can vary substantially. Structural engineer’s drawings, beam specification, bearing details and site access must be provided for accurate pricing.

Choose the roof structure

Select the closest roof form. Complex roofs, valleys and unusual abutments require a custom calculation.

Cutaway of an insulated flat roof structure

Flat roofComplete insulated GRP flat-roof construction. Cutaway of a pitched lean-to roof structure

Pitched roofLean-to pitched roof with artificial slate finish. Cutaway of a gable-ended pitched roof structure

Gable-ended roofDual-pitch roof with a constructed gable end.

Gutter layout

Choose the required gutter layout for the flat roof.

03 Doors

Supply and installation are included as guide allowances. Single doors are limited to 1.2 m wide; every door is limited to 2.4 m high.

04 Windows & skylights

Windows

A standard uPVC window supply and installation allowance is included. Final specification may change the price.

Skylights

A standard skylight, flashing kit and installation allowance is included. Final brand and specification may change the price.

05 Finishes & services

Board & plasterDot-and-dab walls, screw-fixed ceiling and skimPaintingStandard preparation and trade paint to new walls and ceiling

Double socketsLED spotlights

Basic plumbing & heatingGuide allowance for straightforward pipework and connection alterations

Standard double-panel white radiators Ordinary rubbish removal includedNormal construction and installation waste is included. Hazardous waste and abnormal bulk spoil require separate assessment.

Divert inspection chamberProvisional allowanceNew inspection chamberUp to 1 m deepCrate soakawaySubject to testing and design

Add the 0% finance optionThe displayed total includes applicable finance arrangement costs. Eligibility and full terms will be discussed personally.

KVR Construction LTD

Preliminary cost plan

Your indicative allowance

Including VAT£0

What your estimate includes

One overall price—no confusing line-item costs.

Included work	Quantity / basis

Request a measured site visit →

Rates: BCP Construction Unit Rates · Bournemouth, Christchurch & Poole · August 2026. This calculator is a budgeting aid and does not constitute an offer or contract.

Built for peace of mind

✓ Fully insured

✓ Written quotations

✓ Dedicated project lead

✓ Workmanship guarantee

A better building experience

Your home deserves more than a good finish.

It deserves a team that turns up, communicates clearly and treats every detail as if it were their own.

From first feasibility conversation to final handover, we coordinate the trades, programme and quality control—so you always know what is happening next.

How we work →

What we build

One team. Every stage.

Focused residential expertise, with the systems and standards of a larger contractor.

Extensions

Thoughtful rear, side-return and wraparound extensions that add space and lasting value.

Discuss your extension →

Full renovations

Complete home transformations, carefully sequenced from strip-out to final decoration.

Plan your renovation →

Loft conversions

Well-resolved new floors with structural, insulation and finish details handled together.

Explore the potential →

New builds

End-to-end delivery for distinctive homes, from groundworks through to handover.

Start a conversation →

Selected work

Craft you can see.
Quality you can feel.

Every project is shaped around the people who live there—not a house style.

BCP & Dorset · Rear extension

Open-plan family extension

Completed by KVR Construction

BCP & Dorset · Garage conversion

Garage living-space conversion

Completed by KVR Construction

BCP & Dorset · Extension & renovation

Kitchen and garden extension

Completed by KVR Construction

Want to see more of our completed work?

Genuine KVR Construction project photography.

A clear route forward

No guesswork. No surprises.

You get a named contact, an agreed programme and clear decisions at every stage.

01
Listen & assess
We visit, understand your priorities and check the practical realities.
02
Scope & price
You receive an itemised proposal, exclusions and realistic programme.
03
Build & communicate
Your project lead coordinates the site and shares regular progress updates.
04
Inspect & hand over
We resolve final details together and leave you with a complete handover pack.

Good questions, answered

Before we begin.

How early should we contact you?+

Ideally during early design. That lets us advise on buildability, likely costs and programme before decisions become expensive to change.

Do you provide a fixed quotation?+

We provide a detailed written quotation against an agreed scope. Any client-requested changes are priced and approved before the work proceeds.

Can you work with our architect?+

Yes. We regularly collaborate with architects, engineers and interior designers, or can introduce suitable professionals where needed.

What areas do you cover?+

We are based in Poole and serve Bournemouth, Christchurch and surrounding Dorset areas. Contact us with your postcode to confirm availability.

Start your project

Let’s build something you’ll love living in.

Tell us a little about your plans. We’ll respond within one working day to arrange an initial call.

Beautifully built.
Properly managed.