Converting a House to Flats – Plans from £995 + VAT

Draw Plans
Apr 21
3 min read

Expert Subdivision Plans for 2 or 3 Flats in London & Home Counties

Thinking of converting a house to flats? Whether you're a landlord, investor or homeowner looking to maximise rental income, subdividing a house into multiple self-contained units can be a lucrative property strategy.

At Draw Plans, we specialise in flat conversion plans starting from just £995 + VAT, serving all of London and the surrounding Home Counties. Our experienced architectural designers create planning and building regulation-ready drawings for house-to-flat conversions, tailored to your property and your profit goals.

Why Convert a House into Flats?

Maximise Rental YieldMultiple rental units under one roof can significantly increase your monthly income.

Increase Property ValueSubdividing a property can raise its value, especially in high-demand areas.

Appeal to More Tenants or BuyersSelf-contained flats are popular with students, professionals, and small families.

Flexible Investment StrategyYou can rent, sell individually, or live in one flat and rent the others.

What Is Involved in Converting a House to Flats?

A house-to-flats conversion (also called splitting a house into 2 flats) involves creating separate units within the same building. Each unit will typically include:

Private access (shared or individual entrance)
Kitchen
Bathroom
Separate utilities (water, electricity, gas)
Independent addresses (optional)

Draw Plans ensures your new flats meet space standards, fire safety, soundproofing, and building regulations from the start.

Flat Conversion Cost Guide

Below is a rough guide to the cost of converting a house into flats. Actual figures vary based on layout complexity, property condition, planning permission, and whether structural work is needed.

Conversion Type	Estimated Build Cost
Convert house into 2 flats	£40,000 – £80,000+
Convert house into 3 flats	£60,000 – £120,000+
Draw Plans subdivision designs	From £995 + VAT

We’ll help you design for both cost-efficiency and long-term value. Our plans are perfect for submitting to planning authorities, freeholders, and builders.

What’s Included in Our Flat Conversion Plans?

With Draw Plans, your flat conversion project starts with precise, well-structured drawings that save time, avoid planning issues, and support smooth construction.

Our service includes:

Measured property survey
Existing layout drawings
Proposed floor plans for 2 or 3 flats
Layouts optimised for rental or resale value
Separate utility meters and access points planned
Guidance on planning permission and building regulations
Scalable drawings for planning submission and construction

Optional extras include soundproofing details, fire safety drawings, and licence applications for HMO (House in Multiple Occupation) compliance if applicable.

Layout Design Tips for Flat Conversions

Converting a house into flats successfully depends on creating practical and appealing layouts. Here are some essential tips:

Smart Subdivision Tips:

Use vertical layouts (split by floors) for simplicity and lower cost
Create independent entrances for each flat if possible
Place bathrooms and kitchens back-to-back to save plumbing work
Ensure good natural lighting and ventilation for every room
Maintain minimum floor space standards (37–50m² for 1-bed flats)
Use shared corridors efficiently in side or back extensions

At Draw Plans, we tailor every plan to suit your property’s unique layout, shape, and opportunities.

Do You Need Planning Permission to Convert a House to Flats?

Yes — in most cases, you will need planning permission to convert a single-family home into multiple flats.

You may also need:

Building Regulations approval
Fire safety compliance
Acoustic testing for sound separation
Party wall agreement (if semi-detached or terraced)
Freeholder consent (if leasehold)

Draw Plans can assist with the full process — including planning submissions and liaising with your local council.

Where We Work

We provide flat conversion architectural plans throughout:

Greater London (all boroughs)
Essex
Hertfordshire
Surrey
Kent
Buckinghamshire
Berkshire

We’re familiar with local planning policies across councils like Camden, Croydon, Hackney, Barnet, Enfield, Hillingdon, and more.

Testimonials

“Draw Plans helped me convert a 3-bed Victorian terrace into two stunning flats in East London. The layout was perfect for young professionals — and the builder had zero issues with the plans.”— Liam P., Walthamstow

“I was new to property development and Draw Plans made the process stress-free. They handled the subdivision plans and gave me confidence to move forward.”— Michelle S., Croydon

“Professional, fast, and great value. We now have three income-generating flats thanks to the team at Draw Plans.”— Raj K., Harrow

Why Choose Draw Plans?

Flat-rate pricing from just £995 + VAT
Plans for converting houses into 2 or 3 flats
Fully compliant with planning and building regulations
Fast turnaround and friendly, expert advice
Trusted by landlords, investors, and developers across London

Start Your House-to-Flats Conversion Today

Whether you're splitting a home for long-term rental income or developing for sale, Draw Plans is here to help you get started — with precise, efficient and cost-effective drawings.

Let’s turn your house into a high-value set of modern flats.