Double Storey Extensions • Strelley, Nottinghamshire
Double Storey Extensions in Strelley
A double storey extension in Strelley typically costs between £70,000 and £120,000+, depending on footprint, ground conditions, structural steelwork, and internal fit-out. Most projects take around 12 to 18 weeks on site. Planning approval through Broxtowe is often required, alongside building control oversight handled via Erewash Borough Council.
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Start your project today
- Free Quotations
- Experienced Team
- Quality Workmanship
- Fully Insured
Double Storey Extensions in Strelley: the short answer
A double storey extension in Strelley typically costs between £70,000 and £120,000+, depending on footprint, ground conditions, structural steelwork, and internal fit-out. Most projects take around 12 to 18 weeks on site. Planning approval through Broxtowe is often required, alongside building control oversight handled via Erewash Borough Council.
- Typical time on site
- About 12-18 weeks on site
- Planning permission
- Usually required; some rear extensions may fall under Permitted Development
- Decided by
- Broxtowe Borough Council (Broxtowe)
- Indicative cost
- Indicative: £70,000 to £120,000+ as a guide
Strelley property: what makes the work different here
Strelley presents an appealing blend of rural charm and established suburban residential developments located roughly five miles west of Nottingham city centre. The area encompasses historic Strelley Village with its listed buildings and conservation area, alongside post-war and late-twentieth-century residential housing estates bordering Bilborough and western suburban corridors. Properties here range from traditional brick-built cottages and detached houses with expansive plots to classic semi-detached family homes. Many of these dwellings feature generous rear gardens and wide side returns, offering exceptional scope for double storey side and rear extensions. Ground conditions across Strelley often feature Nottinghamshire mudstones and firm clay soils, which dictate the necessary foundation depths for two-storey load-bearing masonry. Modernising these homes through double storey additions allows growing families to create expansive ground-floor open-plan living and kitchen zones while adding master suites, extra bedrooms, or home offices upstairs, significantly enhancing living space without the expense of moving.
What double storey extensions involves
Building a double storey extension is a comprehensive structural project that demands precision engineering and skilled trade coordination. Work commences with site clearance, setting out, and excavating deep foundations to support the dual-level brick and block masonry. Concrete footings are poured, followed by sub-floor construction, damp-proof membrane installation, and below-ground drainage connections. Bricklayers then raise external cavity walls featuring high-performance insulation, aligning matching brickwork and mortar with your existing home. Once the walls reach the first-floor level, structural steel beams and floor joists are installed to form the upper storey platform. The upper masonry continues up to roof level, where carpenters construct traditional cut timber rafters or install pre-fabricated roof trusses. After the roof is felted, battened, and tiled, high-efficiency double-glazed windows and doors are fitted to make the structure watertight. Internal trades then install plumbing, electrics, heating, plasterboard, skim coats, and joinery before structural knock-throughs connect the new extension into your home.
Do I need planning permission in Strelley? (Broxtowe Borough Council)
Navigating planning requirements correctly is essential for any double storey project. In Strelley, planning applications fall under the jurisdiction of Broxtowe. While certain single-storey extensions can proceed under permitted development, two-storey extensions usually require a full householder planning application submitted via the Broxtowe planning portal. Permitted development rules for multi-storey additions are restrictive: the extension cannot extend more than three metres past the rear wall, must match the existing roof pitch, and must remain at least two metres from any boundary if eaves exceed three metres. Furthermore, if your home is located within the designated Strelley conservation area, permitted development rights for multi-storey structures are removed, requiring planning permission that respects local historic character, roof profiles, and matching exterior materials. We manage the entire process, preparing detailed architectural drawings, design and access statements, and submitting the application while coordinating directly with Broxtowe planning officers through to determination.
Building regulations, inspections and paperwork
All double storey extensions must strictly comply with national building regulations covering structural safety, thermal insulation, fire protection, and drainage. In Strelley, building control services are administered and delivered by Erewash Borough Council on Broxtowe's behalf. We manage this entire process from initial plan submission to final inspection. Building control inspectors visit the site at mandatory stages: excavating footings, pouring concrete foundations, inspecting damp-proof courses, approving structural steel beam placement, checking intermediate floor joists and roof framing, and reviewing insulation levels before boarding. In two-storey extensions, particular emphasis is placed on fire safety, ensuring habitable upper-floor rooms have compliant escape windows, suitable fire doors, and linked smoke and heat alarms. Once all building stages pass inspection and electrical and plumbing compliance certificates are validated, Erewash Borough Council issues a final Building Regulations Completion Certificate. This official document is essential for future property sales or remortgages, verifying that the building work meets all legal building standards.
Council contacts for Strelley
Broxtowe Borough Council is the planning authority. Building control is handled by Erewash Borough Council, which delivers building control on Broxtowe's behalf.
- Building control
Details as published by the council. Fees and processing times change, so check the council's own page for the current figures — or let us handle the submission for you.
How we work, stage by stage
Design N Build operates a transparent, structured process designed to take your double storey extension from initial concept to completed handover without stress. We begin with a thorough on-site consultation in Strelley to evaluate your property, understand your family's spatial requirements, and discuss budget parameters. Following this, our design team produces initial architectural layouts and 3D concepts, refining them until you are completely satisfied. Once the design is settled, we submit full planning applications to Broxtowe where required and prepare technical structural calculations. When planning and building regulations approvals are secured, we provide a fixed, itemised price and a clear schedule of works. On site, our experienced project managers oversee dedicated trades, ensuring building work proceeds efficiently, safely, and cleanly. We coordinate all statutory site inspections with Erewash Borough Council building control officers, keeping you informed with regular weekly updates until final plastering, first-fix, second-fix trades, and decorative finishes are completed to exacting standards.
- Step 1
Initial Site Consultation
We visit your Strelley home to evaluate site access, discuss layout ideas, check ground feasibility, and outline planning options.
- Step 2
Design & Planning Submission
Our team develops bespoke architectural drawings, submits planning applications to Broxtowe if required, and coordinates technical structural calculations.
- Step 3
Groundwork & Sub-Structure
We clear the site, dig trench foundations, install drainage pipework, pour concrete footings, and obtain initial building control inspection sign-off.
- Step 4
Superstructure Construction
Skilled bricklayers build insulated cavity walls, position structural steelwork, and install first-floor joists to create the upper level.
- Step 5
Roofing & Weatherproofing
Carpenters build the roof structure, roofers lay matching tiles, and external windows and doors are fitted to make the building watertight.
- Step 6
First Fix & Plastering
Electricians, plumbers, and heating engineers install cabling, pipework, and services before plasterboard boarding and skim plastering throughout.
- Step 7
Knock-Through & Handover
We carefully knock through into the existing home, fit second-fix joinery, sanitaryware, and lighting, and complete final building control inspections.
| Weeks 1-3: Groundworks & Foundations | Site clearance, bulk soil excavation, pouring concrete trench foundations, and installing underground drainage runs. |
|---|---|
| Weeks 4-7: Superstructure Masonry | Laying sub-floors, erecting insulated cavity brick and block walls, and installing structural steelwork and upper floor joists. |
| Weeks 8-10: Roof & Weatherproofing | Constructing cut timber roof or trusses, felting, tiling, and fitting windows and external doors to achieve a watertight shell. |
| Weeks 11-14: First Fix & Plastering | Running electrical wiring, plumbing pipework, central heating extensions, installing thermal insulation, and plastering walls and ceilings. |
| Weeks 15-18: Knock-Through & Completion | Opening structural knock-throughs, fitting bathroom suites, joinery, lighting, flooring, and completing final building control sign-off. |
What drives the cost in Strelley
The total cost of a double storey extension in Strelley is governed by several core structural and specification factors. Ground conditions play an early role; properties with heavy clay subsoils or those situated on sloping plots require deeper trench foundations or engineered ground solutions to satisfy building control standards. The structural complexity of the ground floor also influences expenditure, as creating large, open-plan kitchen and living areas necessitates heavier steel beams and supporting columns to bear the weight of the new first-floor bedrooms and roof above. Roof integration is another key driver, particularly where complex hip-to-gable alterations or intricate valley junctions are needed to blend the new structure with the original roofline. Internal fit-out specifications represent a significant variable. Adding high-specification en-suite bathrooms, underfloor heating, premium aluminium bi-fold doors, or complete utility room installations will adjust total investment compared to standard bedroom layouts. Finally, drainage alterations, such as rerouting shared inspection chambers, will impact the overall groundwork budget.
| Ground & Soil Conditions | Clay soils or sloping ground in Strelley require deeper concrete footings or engineered foundations, increasing excavation and concrete costs. |
|---|---|
| Overall Footprint Size | Larger square meterage increases material requirements, brickwork, floor joists, roof timbers, and interior plastering and decoration scope. |
| Structural Steel Complexity | Creating wide, open-plan ground floor layouts demands larger structural steel beams and padstones to carry upper-floor loads safely. |
| Roof Design & Materials | Complex roof configurations, matching traditional tiles in conservation zones, or blending rooflines with existing structures adds carpentry and roofing labour. |
| Internal Fit-Out Choices | The number of new bathrooms, underfloor heating systems, bespoke kitchens, and premium doors significantly influences total expenditure. |
| Drainage & Utility Relocation | Relocating existing drainage stacks, shared sewers, or gullies requires additional pipework, inspection chambers, and building control oversight. |
Cost ranges on this page are indicative guides only, not quotations. Your figure depends on the survey, specification and site conditions.
Projects we take on in Strelley
We deliver a diverse range of double storey extensions tailored to the specific architecture of Strelley homes. Double storey rear extensions are the most common, creating large ground-floor open-plan kitchen-diners with bi-fold doors opening onto the garden, paired with new bedrooms and en-suites on the first floor. Two-storey side extensions are popular on semi-detached and detached homes with side driveways, enabling homeowners to integrate integral garages or utility rooms downstairs and additional bedrooms upstairs. We also design and build two-storey wrap-around extensions, combining side and rear expansions to completely transform the footprint and flow of the property. Whether modernising a post-war family house or extending a more traditional village home, our builds are engineered for longevity and seamless integration.
Read the full Double Storey Extensions guide for design options, planning rules and what drives cost.
Living in the house while we work
Living at home during a double storey extension is feasible with careful planning and site separation. The first phases of construction—excavation, footings, brickwork, and roof construction—happen externally without disturbing your existing living quarters. Disruption increases when we break through external walls to install structural steel supports and link the new spaces. We manage this by installing sealed, insulated dust screens across doorways and openings to prevent dirt and cold draughts from spreading into the main home. Essential utilities such as water, power, and heating are maintained throughout, with any brief interruptions scheduled in advance. If the project involves remodelling the ground-floor kitchen, we help you set up a temporary cooking station in an adjacent room. On suburban Strelley roads, we ensure skip placement and contractor parking do not obstruct your driveway or inconvenience neighbours, maintaining a clean, secure site perimeter throughout the build.
Areas we also cover near Strelley
From our base, we serve Strelley and all surrounding communities across western Nottinghamshire. Our team regularly works in neighbouring Bilborough, managing multi-storey additions and internal remodelling projects for suburban family homes. We also build extensively in Nuthall, working on detached and semi-detached properties requiring tailored planning permissions under Broxtowe. In Trowell, we construct bespoke rear and wrap-around extensions that deliver substantial living space while respecting local village settings. Our close proximity to these areas ensures our project managers and trades are consistently on site, maintaining tight schedules, coordinating material deliveries smoothly, and keeping construction progressing steadily from start to finish.
Double Storey Extensions in Strelley: questions people ask
What factors influence the cost of a double storey extension in Strelley?
The main factors driving the cost of a two-storey extension in Strelley include the total floor area, ground conditions, structural steel complexity, and interior specifications. Groundwork on clay soils or sloping plots near Strelley Village requires deeper trench footings or engineered rafts. Large open-plan ground floors need substantial structural steel beams. Upgrading heating systems, installing multiple bathrooms, or choosing high-end finishes also increases overall expenditure significantly compared to basic shell construction.
What is the indicative budget for a two-storey build in Strelley?
As an indicative guide, a standard double storey extension in Strelley generally costs between £70,000 and £120,000 or more. A compact two-storey addition providing one extra bedroom and an extended kitchen sits at the lower end of this guide. Larger wraps, extensive structural reconfigurations, or premium kitchen and en-suite installations will push costs higher. We provide fully itemised, fixed quotations following an initial site visit and design assessment.
How long does a double storey extension take to build?
A typical two-storey extension in Strelley takes approximately 12 to 18 weeks on site from initial ground excavation to final sign-off. The exact timeline depends on ground conditions, adverse weather, structural complexity, and chosen interior finishes. Before building work starts, you should allow around 8 to 12 weeks for architectural drawings, structural engineering calculations, and obtaining necessary planning permissions through Broxtowe or securing building control plan checks.
Will I need planning permission for a double storey extension in Strelley?
Double storey extensions often require a full householder planning application submitted to Broxtowe, particularly if extending past the original rear wall by more than three metres or building to the side within two metres of a boundary. If your home falls within the Strelley conservation area, permitted development rights are restricted. We manage the entire planning process on your behalf, preparing scaled drawings, submitting documents, and liaising directly with council planning officers.
Can I build a two-storey extension under Permitted Development in Strelley?
Some double storey rear extensions can be built under Permitted Development rights if they meet strict criteria. They must not extend beyond the original rear wall by more than three metres, must be at least two metres from any boundary if roof eaves exceed three metres, and roof pitches must match the existing house. Permitted development does not apply in designated conservation areas, making full planning permission mandatory for historic Strelley properties.
What restrictions apply if my home is in the Strelley conservation area?
If your property is situated within the Strelley conservation area or near heritage assets, special planning restrictions apply. Permitted development rights for multi-storey additions are removed, meaning all extensions require full planning permission from Broxtowe. Planners assess rooflines, window proportions, and exterior materials to ensure the addition preserves local rural character. Matching brickwork, stone details, and traditional roof tiles are essential to secure planning approval.
How do building regulations and site inspections work?
Every double storey extension requires building regulations approval to ensure structural stability, fire safety, thermal efficiency, and proper drainage. In Strelley, building control services are delivered by Erewash Borough Council on Broxtowe's behalf. Independent building control inspectors carry out mandatory site inspections at critical milestones, including foundation excavations, damp proofing, steel installation, floor joists, roof timbers, insulation, and final completion before issuing a formal Building Regulations Completion Certificate.
Do I need a party wall agreement for a two-storey extension?
The Party Wall etc. Act 1996 applies if your double storey extension involves excavating foundations within three to six metres of a neighbour's structure or building directly on or astride a shared boundary. In suburban Strelley streets, semi-detached and detached homes with narrow side passages often trigger party wall notices. We help you prepare and serve the statutory notices to adjoining owners at least two months before starting groundworks.
How do VAT and project payments work?
Standard residential building work carries statutory VAT at 20 percent, which is clearly itemised within our transparent quotations. We never ask for large upfront deposits. Instead, payments are structured across an agreed stage-payment schedule linked to measurable progress milestones on site, such as foundation completion, roof watertight stage, first-fix services, and plastering. You only pay for inspected, verified work completed satisfactorily at each stage.
Who handles the drawings and structural calculations?
Before starting any construction, accurate architectural plans and structural engineering calculations are essential. A structural engineer calculates the steel beams and columns required to support the upper floor and existing masonry. We coordinate the production of detailed construction drawings, building regulation specifications, and structural calculation packs, submitting them directly to building control to ensure the design complies fully with all safety and structural loading standards.
What should I look for when choosing an extension builder in Strelley?
When selecting a builder in Strelley, look for an established contractor offering end-to-end management, fully itemised quotes, and clear payment schedules. Verify insurance cover, ask to see examples of completed local two-storey extensions, and ensure they work collaboratively with building control inspectors. A reputable builder communicates proactively, coordinates trades smoothly, manages health and safety strictly, and provides formal contracts covering work scope, timelines, and warranty terms.
Can we stay living in the house during the building work?
Most homeowners remain in their property throughout a double storey build. The messiest and most disruptive stage occurs when knock-throughs break into the existing house to install structural steelwork. We erect airtight timber and plastic dust screens to protect your living spaces, maintain essential services like heating and water, and sequence works to minimise upheaval. Setting up a temporary kitchen is sometimes recommended during large ground-floor reconfigurations.
How are parking, deliveries, and skips managed on site?
In Strelley, suburban streets usually provide adequate driveway parking and road space for contractor vans, deliveries, and skips. Narrower lanes in older parts of the village require careful logistics to prevent blocking farm or residential traffic. We coordinate skip drops, arrange grab lorries for quick muck-away, plan bulk material deliveries during off-peak hours, and maintain tidy, safe working boundaries that respect your neighbours.
What paperwork and guarantees do I receive after completion?
Upon successful completion of the build and final inspection by Erewash Borough Council building control, you receive an official Building Regulations Completion Certificate. This document proves structural and safety compliance, which is vital when selling or remortgaging your home. We also provide all relevant electrical Part P and Gas Safe commissioning certificates alongside our comprehensive structural workmanship guarantee for total peace of mind.
Which areas near Strelley do you also cover?
Alongside Strelley, we build double storey extensions across surrounding Nottinghamshire communities. Our core service area includes Bilborough, Nuthall, and Trowell, as well as neighbouring western Nottingham districts. Because we are locally based, we understand the varied ground conditions, housing styles, and council planning requirements across all these locations, ensuring a smooth, dependable construction process from initial architectural concepts through to final sign-off.
How do I get started with Design N Build?
Starting your project is simple. Contact Design N Build by calling 07888 885791, sending a message via WhatsApp, or completing the quick quote form on our website. We arrange an initial on-site consultation at your Strelley property to discuss your ideas, assess structural feasibility, outline council planning considerations, and provide a clear, no-obligation indicative estimate to bring your extension vision to life.
Next step for your Strelley project
Adding a double storey extension is one of the most effective ways to transform your living space and increase your property's long-term value. Whether you are looking to create a master bedroom suite, add an extra bathroom, or build an expansive open-plan kitchen and dining area, Design N Build is here to assist. Contact our friendly, knowledgeable team today on 07888 885791, message us via WhatsApp, or complete the quick quote form on our website to schedule your initial on-site consultation in Strelley. We look forward to discussing your project.
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