Professional Fees For Extensions and Loft Conversion Projects

8th November 2019

The below are examples of other consultant and submission costs associated with past home extension projects we’ve worked on. Please use this as guidance for your project and note that all projects differ.

Please note that any scenario of the party wall agreement listed below could apply for each other project type.

Chimney Removal & Creation of WC

Stage 1 & 2 Fees:

  • Measure and Design Fees: Contact Detailed Planning for a quote

Stage 3 Technical Fees:

  • Building Regulation Drawings: Contact Detailed Planning for a quote
  • Structural Engineer Fee: £408 inc VAT
  • Building Control Inspection Fees: £585 inc VAT
  • Party Wall Agreements: A notice was served to one neighbour as the chimney was being removed, the fee for the notice was £100 inc vat. The neighbour opted for a schedule of condition rather than a full party wall agreement costing the owner £300 inc vat rather than the typical £840 inc VAT for a full party wall agreement.

Simple Single Storey Ground Floor Rear Extension

Stage 1 & 2 Fees:

  • Measure and Design Fees: Contact Detailed Planning for A quote
  • Prior Approval Council Fee: £96
  • Lawful Development Fee: £128

Stage 3 Technical Fees:

  • Building Regulation Drawings: Contact Detailed Planning for a quote
  • Structural Engineer Fee: £606 inc VAT
  • Building Control Inspection Fees: £785inc VAT
  • Thames Water Build Over Agreement: £299
  • Party Wall Agreements: A notice was served to two neighbours as the excavation were within 3m of the neighbours, the fee for each notice was £100 inc vat. One neighbour signed the notice and the other opted for party wall agreement and agreed to using the suggested surveyor costing the owner £840 inc vat

Wrap Around Single Storey Ground Floor Rear Extension With Chimney and WC

Stage 1 & 2 Fees:

  • Measure and Design Fees: Contact Detailed Planning for A quote
  • Full Planning Application Fee: £231

Stage 3 Technical Fees:

  • Building Regulation Drawings: Contact Detailed Planning for a quote
  • Structural Engineer Fee: £950 inc VAT
  • Building Control Inspection Fees: £1340 inc VAT
  • Thames Water Build Over Agreement: £299
  • Party Wall Agreements: A notice was served to two neighbours as the excavation were within 3m of the neighbours and shared walls were proposed, the fee for each notice was £100 inc vat. One neighbour agreed to use the suggested surveyor costing the owner £840 inc VAT. The other owner opted for their own surveyor, therefore the owner had to pay two surveyors fee, their surveyor cost £840 inc VAT, the neighbours surveyor cost £1800 inc VAT.

Permitted Development Loft Conversion (semi detached)

Stage 1 & 2 Fees:

  • Measure and Design Fees: Contact Detailed Planning for A quote
  • Lawful Development Application Fee: £128

Stage 3 Technical Fees:

  • Building Regulation Drawings: Contact Detailed Planning for a quote
  • Structural Engineer Fee: £630 inc VAT
  • Building Control Inspection Fees: £783 inc VAT
  • Party Wall Agreements: A notice was served to one neighbour as beams were installed within the party wall, the fee for each notice was £100 inc vat. The neighbour agreed to use the suggested surveyor costing the owner £840 inc VAT.

Large Double Storey Extension, Loft Conversion and Roof Extension (detached house)

Stage 1 & 2 Fees:

  • Measure and Design Fees: Contact Detailed Planning for A quote
  • Lawful Development Application Fee: £128
  • Prior Approval: £95
  • Full Householder Planning Application: £231

Stage 3 Technical Fees:

  • Building Regulation Drawings: Contact Detailed Planning for a quote
  • Structural Engineer Fee: £3906 inc VAT
  • Building Control Inspection Fees: £2218 inc VAT
  • Party Wall Agreements: Excavations were within 3m of one neighbour, a notice was served costing the owner £100 inc VAT, the neighbour signed the notice allowing the works to proceed.

   

 

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jemsmith1
jemsmith1
10:44 23 Dec 20
We have used Detailed Planning a couple of times now for planning issues related to our nursery business and they have... always been efficient and communicative and got the result we needed.read more
Francesca Malone
Francesca Malone
19:02 28 Oct 20
We have used Detailed Planning to help design and obtain planning for our single story extension converting our one... bedroom flat to a two bed. We have found them to be extremely helpful, communicating the process and how things work throughout. We were particularly happy with their ability to negotiate our extension depth with the planning office, resulting in 3.5 metres instead of the permitted 3m, which was crucial for our space to work. We look forward to working with them for the rest of the project.read more
Sharon Marsh
Sharon Marsh
15:51 21 Oct 20
We used Detailed planning for a loft conversion and side extension. Very helpful guidance with respect to what would be... allowed by the Planning department. Very efficient service. Would highly recommendread more
Christian Constantinides
Christian Constantinides
19:07 10 Oct 20
I used Detailed Planning for a new build home in the London Borough of Enfield. They managed initial feasibility and... concept design, the planning application process, building regulation drawings and support throughout the build. All in all the entire service was fantastic and I would certainly use Detailed Planning for future projects.read more
Claire M
Claire M
12:52 15 Jun 20
I hired Detailed Planning for the design of my loft extension along with the corresponding planning permission... application. Absolutely brilliant service.They know exactly what they're doing. They were open to my design changes whilst keeping a sharp eye on local council requirements. I'm so pleased - planning permission was granted sooner than expected with no changes. Thanks so much!read more
Komal Lulle
Komal Lulle
08:35 28 May 20
Excellent team and superb service. They are best a there job and they provide guidance, support, work and plan... according to your requirement. And do not hesitate in making changes until you are satisfied. Truly recommend themread more
Emma cheevers
Emma cheevers
15:00 20 May 20
Paul and his team were absolutely excellent to work with. I couldn't recommend them more. So professional, quick and... always ready with advice. Really enjoyed the experienceread more
Mel D
Mel D
21:03 13 May 20
Paul & Emily are fantastic, they have done everything from start to finish for our planning permission and technical... drawings and the quality of their work is very high (I guess it is in the name - detailed!) They have been patient with all our design changes, provided lots of advice, walked us through the process of who to engage with, when etc. and were always responsive and helpful when we have questions both via email and phone. This is our first major project and we are doing a loft conversion and remodelling the entire house so to have this support has been invaluable and well worth the money. We actually found them on trust a trader and obtained a few other quotes, DP was the most reasonable price wise, had the right qualifications, good reviews and a big plus was their well evidenced portfolio of work & experience in the area. It was a no brainier and they really have delivered beyond our expectations, most things have also been done via emails and zoom calls so the flexibility was there which really worked for us, would recommend them to anyone!read more
Gopinath V
Gopinath V
16:14 24 Jan 20
Detailed Planning were recommended to me by a friend. Right from their initial visit and all the way through to the... finished plans, they were very good and we could not have asked for better service. Paul and Emily were always very good in their work they answered every query we had and solved every issue that we encountered during the planning They work extremely well with their recommended engineer, surveyor and building control company to deliver a very good package. Thank you Paul, Emily for your excellent work, We can't wait for our extension to be completed.read more
Ornela Haxhia
Ornela Haxhia
11:48 09 Jan 20
We found Paul and Emily very professional, insightful and helpful during the planning approval stages of a rear... extension to our property. They provided us with regular timely updates. We highly recommend. We have already passed on their details to friends who are looking to make changes to their property in the summar.read more
Nicky Freedman
Nicky Freedman
19:51 23 Dec 19
Nothing a problem for the team at Detailed Planning, helpful, always at the end of phone, attentive and reliable and a... fast efficient service. Would definitely recommend and use again.read more
Stephanie Coward
Stephanie Coward
11:09 18 Dec 19
The service provided by Detailed Planning was exceptional, with fast response times and excellent communication... throughout the project. We would definitely recommend Detailed Planning and look forward to working with Paul and the team again in the future.read more
Oliver Jenkinson
Oliver Jenkinson
19:30 21 Nov 19
Pro active and efficient and got the job done.
Vinay Rughani
Vinay Rughani
18:55 20 Jun 19
Detailed Planning were recommended to me by a friend. We found their prices very reasonable so instructed them to draw... up plans for our extension. Right from their initial visit and all the way through to the finished plans we could not have asked for better service. Paul and Emily were always very easy to get hold of, which I'm told is not the case for all architects. They answered every query we had and solved every issue that we encountered during the planning and party wall agreements with minimal fuss and in good time. They even sorted our build over agreement for our manhole to be moved. They work extremely well with their recommended engineer, surveyor and building control company to deliver a very good package. Thank you Paul, Emily and everyone at Detailed Planning. We can't wait for our extension to be completed.read more
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