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We're exhibiting at the Southern Homebuilding & Renovating Show Homebuilding Show — Sandown Park, 27–28 June · Stand S538
🎟 Get 2 Free Tickets HereFull householder planning application drawings for Winchester City Council — existing and proposed floor plans, elevations, site plans and design-and-access statement.
Detailed structural and building regulations drawings for building control. Covers foundations, structural beams, insulation, drainage and fire safety compliance.
Contract administration, specification writing, contractor vetting and project oversight for your Winchester extension — keeping it on programme and on budget.
Winchester City Council is one of Hampshire's more meticulous planning authorities, with extensive conservation areas and strong design guidance. Getting an extension approved requires drawings that meet both national planning policy and Winchester's own standards — materials, massing, window proportions and impact on street scene all matter.
Hampshire Build is based in Winchester and has submitted hundreds of applications to Winchester City Council, Test Valley Borough Council and East Hampshire District Council. We know what local planning officers expect and design our extensions accordingly — which is why we maintain a 98% approval rate.
Many single-storey rear extensions in Winchester qualify under Permitted Development Rights — up to 4m deep for detached houses or 3m for semi-detached without planning permission. However, Winchester has extensive conservation areas covering much of the city centre and surrounding villages, where full planning permission is typically required. Properties near the South Downs National Park boundary face additional constraints. We assess your specific PD rights during every complimentary consultation.
Our fixed fees are: Pre-Build Package from £1,950 + VAT (planning drawings), Pre-Build Package from £1,950 + VAT, and Premium Plus from £4,950 + VAT (full service including building regs and contract administration). Build costs (paid to your contractor) typically run £1,800–£2,800 per m² in Winchester depending on specification. Use our Extension Cost Calculator for a detailed estimate.
Winchester City Council aims to determine householder applications within 8 weeks of valid submission. Straightforward extensions in non-conservation areas often meet this target; conservation area proposals or more complex schemes can take 10–12 weeks. We prepare thorough applications to minimise the risk of delays caused by information requests.
Yes — this is a significant part of our Winchester workload. Conservation area applications require a design-and-access statement explaining how the proposal preserves the character of the area. We design extensions using traditional materials, appropriate massing and sympathetic detailing that satisfies Winchester City Council's conservation officers. Our 98% approval rate includes many Winchester conservation area successes.
We cover all SO21, SO22 and SO23 postcodes, plus surrounding villages including Twyford, Colden Common, Bishops Waltham, Kings Worthy, Otterbourne, Compton, Hursley, Sparsholt, New Alresford and Stockbridge. We also cover Eastleigh, Romsey and across Test Valley and East Hampshire from our Winchester base.
Book a complimentary consultation. We'll visit your Winchester property, assess feasibility and advise on planning — at no charge.