Loft Conversion in Portsmouth

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Loft conversion companies in Portsmouth

Are you thinking about a loft conversion in order to open space in your home and avoid the necessity to relocate? Then use our free and easy service to compare prices and get the best cost for the work you want completed.

Loft conversions are proving to become more and more popular in the UK. In most households the attic accounts for unused space which would go to better use. Converting can turn the space into a bedroom, bathroom, playroom or even ensuite bedroom.

The fact is there's a lot of potential to transforming your attic, such as added value for the home which can be as much as 20%. Loft conversions are also recommended over a home extension for the reason that infrastructure is already in place. Additionally, you won't be taking away any garden space.

If a attic conversion would benefit the home and you're looking for more space, compare and contrast prices from reliable companies in Portsmouth and get the best offer for the work you need completed.

Average Loft conversion cost in Portsmouth

The regular cost of a Loft conversion is £25000. Costs differ based upon the materials and the firm selected. The upper price range can be as high as £28750. The material costs are mainly approximately £6250

Average price per Loft conversion job in 2025

Avg. price low

Avg. price low
£18,750

Avg. price

Avg. price
£25,000

Avg. price high

Avg. price high
£28,750

£29300

£21975

£14650

£7325

£0

Prices based on actual Loft conversion costs for Portsmouth, as reported by local LeadsDoWork members.

Loft conversion installation cost in Portsmouth 2025

Labour cost £17,500
Material cost £6,250
Waste removal £1,250
Time frame: 6-12 weeks

Loft conversion searches in April 2025

Loft conversion Projects in Portsmouth in March 2025

6,538

Requests for quotations in Portsmouth in March 2025

140

Requests for Loft conversion quotations in Portsmouth in March 2025. -18% change from February 2025.

640

Requests for Loft conversion quotations in Hampshire in March 2025. 8% change from February 2025.

We noted 6,538 requests for property quotations in Portsmouth. Of these quote requests the amount of loft conversion quotes in Portsmouth was 140. Quotatis would have been in a position to match these consumers with as many as 4 suitable contractors who were available for work within Portsmouth during those times. Request a free property survey from trustworthy companies within Portsmouth.

Source: Numbers calculated based on the search volumes in major search engines

Loft conversion searches in cities and towns near Portsmouth March 2025

140

Requests for quotations in Portsmouth in March 2025

44

Requests for quotations in Gosport in March 2025

30

Requests for quotations in Fareham in March 2025

11

Requests for quotations in Lee-on-the-solent in March 2025

10

Requests for quotations in Havant in March 2025

Portsmouth

Home to the world's earliest dry dock, the southerly shoreline city of Portsmouth boasts a population of 442,000, making it the 14th greatest city location in the United Kingdom. As with a lot of of the UK's significant ports, Portsmouth fell victim to a number of Luftwaffe bombings and quite a bit of the city has been refurbished. Irrespective of the modern atmosphere, now there is still lots of work for contractors and property owners help to make regular requests for house improvementss on our site.

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Similar Customer Enquiries for Loft conversion in Portsmouth

26 Feb

Conversion | Loft

Portsmouth - PO2

Enquiry from: Rohan A

Start Date: Immediate

i’d like a single dorma loft conversion. 2 bedrooms and a separate shower room are you the property owner: owner of the property property type: semi detached what are you looking to convert the spac...

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15 Jul

Conversion | Loft

Portsmouth - PO2

Enquiry from: Vivienne G

Start Date: Immediate

very early days of considering a loft conversion . need some ideas of costs and options before we can plan . gable end slopes so i believe will need building up ?? semi detached so side across . ar...

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02 Aug

Conversion | Loft

Portsmouth - PO3

Enquiry from: Graham C

Start Date: Immediate

loft conversion, drawings in place are you the property owner: owner of the property property type: semi detached what are you looking to convert the space into: bedroom/s are you looking to have stai...

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10 Sep

Conversion | Loft

Portsmouth - PO2

Enquiry from: Taiyeb K

Start Date: 1 to 3 months

Double room Single Small bathroom Small study Rear side dormer Front of house velux windows Are you the property owner: Owner of the property Property Type: Terrace What are you looking to co...

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18 May

Conversion | Loft

Portsmouth - PO2

Enquiry from: Andrew H

Start Date: Less than one month

2 bedroom loft room plus bathroom Are you the property owner: Owner of the property Property Type: Terrace What are you looking to convert the space into: Bedroom/s Are you looking to have stairs: Ye...

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03 Apr

Conversion | Loft

Portsmouth - PO2

Enquiry from: Andreea L

Start Date: 1 to 3 months

Are you the property owner: Owner of the property Property Type: Terrace What are you looking to convert the space into: Bedroom/s Are you looking to have stairs: No Do you require any windows: Velux ...

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28 Mar

Conversion | Loft

Portsmouth - PO2

Enquiry from: Andreea L

Start Date: 1 to 3 months

Are you the property owner: Owner of the property Property Type: Terrace What are you looking to convert the space into: Bedroom/s Are you looking to have stairs: No Do you require any windows: Velux ...

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08 Nov

Conversion | Loft

Portsmouth - PO6

Enquiry from: Trevor B

Start Date: 1 to 3 months

Loft extension Homeowner Please contact to appoint

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02 Jul

Conversion | Loft

Portsmouth - PO3

Enquiry from: Katrina C

Start Date: Immediate

Loft conversion (dorma)

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02 Mar

Conversion | Loft

Portsmouth - PO2

Enquiry from: Gerry W

Start Date: 1 to 3 months

update old loft conversion to present standards Are you the property owner: Owner of the property Property Type: Semi detached What are you looking to convert the space into: Bedroom/s Are you looking...

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07 Jul

Conversion | Loft

Portsmouth - PO6

Enquiry from: Nigel B

Start Date: Immediate

I want to convert the loft into a bedroom en suite. Build a double garage and extend the kitchen/dining room onto a patio area. I live in a 3 bedroom terraced house in Cosham.

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11 Jan

Conversion | Loft

Portsmouth - PO6

Enquiry from: Paul J

Start Date: Immediate

Customer visited the myloftconversionprices.co.uk site and submitted an enquiry. Property type: Semi detached, Property owner: Owner, Looking to convert into: Storage, Work description: supply and f...

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24 Nov

Conversion | Loft

Portsmouth - PO1

Enquiry from: Kathleen C

Start Date: Immediate

Customer visited the myloftconversionprices.co.uk site and submitted an enquiry. Property type: Terrace, Property owner: Owner, Looking to convert into: Storage, Work description: Pull down la...

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27 Oct

Conversion | Loft

Portsmouth - PO3

Enquiry from: Jim S

Start Date: Immediate

One dorma at rear with velux windows at front. On-suite bathroom installed Are you the property owner: Owner of the property Property Type: Semi detached What are you looking to convert the spac...

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15 May

Conversion | Loft

Portsmouth - PO6

Enquiry from: James E

Start Date: Immediate

Home Owner Semi Detached Convert loft into 2 bedrooms , 1 master bedroom + 1 smaller bedroom + 1 bathroom. stairs up from the first floor stairs. 2 x velux windows 1 x dorma Call To Appoint

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FAQs

do you need planning permission for a loft conversion?

Typically, loft conversions do not require planning permission except in certain situations. They’re usually covered under what’s known as Permitted Development. Certain building works like loft conversion, rear extension and conservatories are granted planning permission by local authorities. Permitted Development, however, gives you a free range to improve your home without having any issues from the councils or regulations. Before your planned loft conversion can be covered under Permitted Development, there are some certain criteria that must be met. This criteria includes the following:

✓ The extension must not go beyond the existing slope of the roof at the front of the house.

✓ The loft space converted must not go beyond 40 cubic metres in a terraced house.

✓ The roof’s height must not be increased by the extension.

✓ The loft space converted must not reach beyond 50 cubic metres in a detached or semi detached house.

✓ The plan for the extension mustn’t involve structures like balconies, verandas or anything other structures of this nature.

✓ The roof extension should be positioned as far back as possible or at least 20cm from the existing eaves.

✓ The side that faces the window openings should be at least 1.7m beyond the floor and the windows should also be obscured.

✓ The roof extension must not overhang the existing roof or wall of the house.

✓ The materials that are to be used must be similar or the same to the materials that has already been used on the house’s exterior.

However, you should bear in mind that there are some properties that are exempt from Permitted Development. Examples of these type of properties include conservation areas, Areas Of Outstanding Natural Beauty and World Heritage sites. Permitted Development does not also provide coverage for listed buildings.

how long does a loft conversion take?

If you’re about to carry out a loft conversion project, you’d probably be wondering how long it’ll take to complete the task. Well, you’re not alone! This is one of the most common questions when it comes to loft conversion projects, however, providing a set timeframe for completion of such projects is impossible as all loft conversions vary. There are different factors that can determine the duration of your project. These factors include, the materials to be used, the type of the proposed loft conversion, the kind of staircase you’ll like to have installed, the number of windows included, the number of rooms to be added as well as a number of other influencing factors. As a result of these variables, the milestones and timings provided are only to be taken as guidelines. If you’d really like to have a set date, you can get in touch with a professional for help.

Generally, it’ll take up to 8 weeks to complete a loft conversion project.

✓ The first week activities will include putting up scaffolding, receiving the first materials for the build and creating an opening in the roof to gain access to the loft space.

✓ In the second week, the structure of the roof will be ammended and more support added.

✓ Third week, the floor joists will be fitted, building of the loft conversion will start, completion of the external roof works and commencement of plumbing and electric works.

✓ Fourth week, complete the building, construct the loft floor, fit the roof windows, insulation, ventilation and internal stud walls.

✓ Fifth week, apply plaster and plasterboard to the room walls, create a staircase opening and fit the new staircase.

✓ Sixth week, plaster the staircase area, complete plumbing and electrical works, hang the doors, fit skirting, handrails and bannisters and start decoration.

✓ Seventh week, complete the decoration and clean and wipe out all wastes.

✓ Eight week, complete all the remaining tasks.

how much value does a loft conversion add?

When its impossible to build out and create more space sideways, why can’t you look upwards? As more and more homeowners in the UK are carrying out their loft conversion project, one question that keeps popping up is the amount of value the loft conversion can add to their homes. However, this is a question that is impossible to provide a single and precise answer to. This is because the value that’ll be generated by a loft conversion is largely dependent on a wide range of influencing factors. To give you a vague idea of the loft conversion value to a property, we’ve put forward a research carried out by industry experts so you can know what you’re in for.

Nationwide carried out a research which shows clearly that a loft conversion including an additional bedroom as part of the building plan will increase a house’s value by up to 21 percent. Since the number of rooms a house has is one of the main metrics for house valuations, loft conversion comes in pretty handy as it’s a great and easy way to convert your house from a 4 bedroom house to a 5 bedroom house prior to sale.

Apart from the financial value aspect, loft conversion also adds more value to your lifestyle which is very unlike nearly other financial investments you can make. More space in your house automatically means more storage or a new room as you wish. A new room can be for a growing family or probably to serve as a guest room. It can also be used as a study space or even an office especially with the rapidly growing rate of people working from home. With loft conversion, the possibilities in terms of value are simply endless!

how disruptive is a loft conversion?

Asides the questions relating to planning permission of a loft conversion as well as the total cost of completing a loft conversion project, this is perhaps the most common question on the loft conversion subject matter. Before making an investment decision, many homeowners will want to know just how disruptive a loft conversion is. Well, we’ve all heard the several horror stories when loft conversion builder with dirty boots tramples all over the fresh and just-acquired shag pile or the noise of the construction loud enough to annoy neighbours from four blocks away or an obvious shortage of teabags, sugar and lots more. Good news is, the disruption of loft conversion is not as bad as people make out. Let’s have a look at how it works!

Just like all other major building projects, a loft conversion is disruptive to your property. However, no two loft conversions are the same, therefore some are certain to be more drastic and invasive than others. In the long run, the project is worth the stress and inconveniences caused and in most cases, it’s usually a very good investment.

Normally, an average loft conversion is expected to last for about 9 to 12 weeks (depending on the complexity of the loft conversion project some might take longer). Some of the factors that affects the duration of a project includes the type of the loft, the design of the loft as well as the style of the property.

Generally, a loft conversion is a lot less disruptive than say completely moving a home. It all has to do with how you’re able to deal with it as a person. And besides, the effect it’s going to have to a large extent depends on the company you hire. A good company will always look to ensure to keep disruptions to a minimal when carrying out the loft conversion project.

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Portsmouth Loft conversion installers are rated 4.4 out of 5 based on 1 reviews of 26 pros.
The LeadsDoWork rating and review is an overall rating based on verified reviews and feedback from the customers with Loft conversion projects that have been connected with Loft conversion pros to help them. All Loft conversion contractors All Portsmouth Loft conversion contractors

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