What is buy to let?
Buy to let is the practice of purchasing a property specifically to rent it out to tenants, generating rental income and (hopefully) benefiting from capital appreciation over time. It is one of the most popular forms of property investment in the UK, with millions of privately rented homes forming a crucial part of the housing market.
As a buy to let investor, you become a landlord. This brings responsibilities, costs, and regulatory obligations alongside the potential financial rewards. Understanding all of these before you buy is essential for making a sound investment decision.
Step 1: Can you afford to invest?
Before looking at properties, you need to assess whether you can afford the upfront and ongoing costs of buy to let investment.
Upfront costs
- Deposit — Minimum 25% of the purchase price, with 30% to 40% unlocking better rates
- Stamp duty — Standard SDLT rates plus the 5% additional homes surcharge
- Legal fees — Conveyancing typically costs £800 to £1,500
- Survey — £300 to £600 depending on the type
- Mortgage fees — Arrangement fees from £0 to £2,000+
- Furnishing — If letting furnished, budget £2,000 to £5,000+ per property
Ongoing costs
- Mortgage payments — Your largest regular expense
- Insurance — Landlord insurance, buildings insurance, and potentially rent guarantee insurance
- Maintenance and repairs — Budget 10% to 15% of annual rent for upkeep
- Letting agent fees — 8% to 15% of rent if you use an agent
- Safety certificates — Gas safety, electrical checks, EPC, and fire safety compliance
- Void periods — Budget for periods without rental income between tenancies
- Tax — Income tax on rental profits and CGT when you sell
Rule of thumb: As a beginner, aim for a property where the monthly rent covers at least 130% of your mortgage payment. This gives you a buffer for void periods, maintenance, and other costs while still generating positive cash flow.
Step 2: Research the market
Not all areas offer the same investment potential. Research should focus on:
- Rental yields — Calculate gross yield by dividing annual rent by purchase price. Look for areas delivering 5% to 8%+ gross yields
- Tenant demand — University cities, transport hubs, and employment centres tend to have strongest demand
- Capital growth potential — Areas undergoing regeneration or benefiting from new infrastructure can offer above-average price growth
- Supply vs demand — Check how many rental properties are available relative to demand in your target area
- Local regulation — Some areas have selective licensing, additional HMO licensing, or Article 4 directions restricting conversions
Step 3: Arrange your mortgage
Buy to let mortgages work differently from residential mortgages. Key differences include:
- Affordability is assessed primarily on rental income rather than your salary
- Minimum deposits are typically 25% (vs 5% to 10% for residential)
- Interest rates are higher than residential equivalents
- Most BTL mortgages are interest-only
- Stress testing is applied to ensure rent covers payments at a higher rate
Working with a specialist buy to let mortgage broker is particularly valuable for first-time landlords. They can explain the lending landscape, identify the best products for your situation, and guide you through the application process.
Step 4: Find the right property
When evaluating properties for buy to let, think like an investor rather than a homebuyer:
- Focus on yield — A property you would love to live in may not deliver the best returns. Functional, well-located properties in tenant-friendly areas are usually better investments
- Consider the tenant demographic — Young professionals want different things from families or students. Match the property to the likely tenant
- Condition matters — Properties requiring major work tie up capital and delay rental income. Unless you are experienced in renovation, start with something ready to let
- Check EPC rating — From 2025, rental properties in England and Wales may need to meet EPC C. Factor any upgrade costs into your calculations
- Avoid leasehold complications — Short leases, high service charges, and restrictive covenants can all reduce your returns
Step 5: Understand your legal obligations
As a landlord, you have numerous legal responsibilities:
- Right to Rent checks — Verify every tenant's right to rent in England before the tenancy starts
- Gas safety — Annual gas safety check by a Gas Safe registered engineer
- Electrical safety — Electrical Installation Condition Report (EICR) every five years
- EPC — Valid Energy Performance Certificate with a minimum rating of E (C may be required in future)
- Deposit protection — Tenant deposits must be placed in a government-approved scheme within 30 days
- Smoke and CO alarms — Working smoke alarms on every floor and CO alarms where solid fuel appliances are present
- Prescribed information — Certain documents must be provided to tenants at the start of the tenancy
Important: Failure to comply with landlord obligations can result in fines, prosecution, and the inability to regain possession of your property. Take legal compliance seriously from day one.
Step 6: Find and manage tenants
You have two options for tenant management:
Self-management
Managing the property yourself saves the cost of a letting agent (typically 8% to 15% of rent) but requires time, knowledge, and availability. You will need to handle advertising, viewings, referencing, tenancy agreements, rent collection, maintenance, and compliance.
Using a letting agent
A letting agent handles the day-to-day management for a percentage of the rent. This is often worthwhile for first-time landlords, particularly if the property is not nearby or you do not have time to manage it yourself. Choose an agent who is a member of a recognised professional body and who has experience with properties similar to yours.
Step 7: Understand the tax implications
Rental income is subject to income tax at your marginal rate. You can deduct allowable expenses including maintenance, insurance, agent fees, and accountancy costs. Mortgage interest is no longer deductible for individual landlords — instead you receive a 20% tax credit.
When you sell, capital gains tax applies to any profit above your annual exempt amount. The rate depends on your overall income and tax band.
Many beginner landlords underestimate the tax burden. Seek advice from an accountant who specialises in property taxation, and consider whether a limited company structure might be more tax-efficient for your circumstances.
Getting started
The first step in your buy to let journey is to speak with a specialist mortgage broker who can assess your finances and explain what you can afford. Nesto matches first-time landlords with experienced buy to let mortgage brokers who understand the needs of beginner investors. Get Matched Free to start your buy to let journey with expert guidance.