Data-driven offer calculator

What should I offer on a house? Here's how to answer that question with data.

Most buyers guess. They look at the asking price, try to figure out how much below asking is acceptable, and make an offer based on gut feel. OfferHound replaces the guesswork with a specific, evidence-based offer range derived from Land Registry sold prices and a full valuation waterfall.

Specific offer range — not a guess
Land Registry comparable sold prices
Full valuation waterfall with every adjustment
Sensitivity analysis across 3 scenarios

Secure payment via Stripe · Report by email · No account needed

How the offer range is calculated
1
Comparable sold prices
Land Registry data, weighted by recency, distance, type, and floor area
2
Valuation waterfall
EPC, time on market, condition, floor area delta — every adjustment documented
3
Sensitivity analysis
Base case, bear case, and improved-condition scenario — 3 offer positions to choose from
Your offer range
A specific range with the evidence to defend it in negotiation
The problem

Why most buyers guess — and why it costs them

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The asking price is not a market price

Asking prices are set by agents who want to attract buyers and achieve the best outcome for the seller. They are not a reliable indication of what the property is worth. The gap between asking and fair value — evidenced by what comparable properties actually sold for — is what OfferHound measures.

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The data exists — but it requires interpretation

Land Registry Price Paid Data records every residential sale in England and Wales. The data is public. But filtering, weighting, and interpreting it to produce a fair value for a specific property requires the kind of methodology that estate agents pay for in their professional tools.

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Guessing leads to bad outcomes

Offer too much and you overpay by thousands. Offer without evidence and the agent dismisses you as uninformed. Offer with data — comparable sales, a valuation waterfall, specific adjustments — and you negotiate from a position of authority.

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The gap can be substantial

Comparable sales evidence often reveals asking prices sitting well above what similar properties actually sold for. Even recovering a fraction of that gap makes OfferHound at £9.99 one of the highest-ROI purchases you'll ever make.

What the data actually shows

OfferHound's sensitivity analysis shows you three scenarios: the base case (as assessed), the bear case (if market conditions soften), and the improved case (if the property is in better condition than comparable evidence suggests). You choose which scenario best fits your read of the market — and negotiate accordingly.

Sample sensitivity analysis
ScenarioFair valuevs Asking
If fully renovated (EPC B)£382,000−5%
◀ Base case (as assessed)£343,000−10.9%
Bear case (market softens 5%)£318,000−17.4%
Asking price: £385,000 · All three scenarios suggest material overpricing
Five analyses in every report

Everything you need to know what to offer.

Hover or tap any card to see real report data.

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Valuation Waterfall & Fair Price

A line-by-line derivation of fair value from Land Registry comparables — with documented adjustments for EPC, time on market, floor area, condition, and market direction. The foundation of your offer.

Full methodology →
Sample · 3-bed semi, Bristol BS3 · 47 transactions analysed
Asking price
£385,000
EPC E penalty
−£11,550
61 days on market
−£15,400
Below-avg condition
−£7,700

Fair value
£343,000
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Comparable Sales Analysis

Distance-weighted, time-adjusted analysis of every comparable transaction in the Land Registry database within 0.5 miles — the primary evidence base for your offer.

Full methodology →
Sample · 2-bed flat, Manchester M14 · 84 transactions reviewed
AddressDatePrice£/m²
24 Withington RdApr 25£228k£3,353
8 Moseley RdMar 25£241k£3,347
15 Ladybarn LnFeb 25£219k£3,422
Weighted avg (dist · recency · type)£3,363
Subject (71 m²) implied fair value£239,000
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Area Intelligence

School ratings, transport access, crime index, environmental quality, and local market velocity — 120+ area data points that inform both the offer and the investment case.

Full methodology →
Sample · 4-bed detached, Guildford GU2 · 121 area data points
🏫Schools
Outstanding + Good
🚆Transport
Stn 0.8mi · London 35m
🔒Crime
12% below Surrey avg
📈Mkt velocity
Avg 34 days to SSTC
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Property & Risk Assessment

EPC analysis, flood zone mapping, full planning history, and title flags — risks that affect both the right price to offer and what questions to raise with your solicitor.

Full methodology →
Sample · 2-bed terrace, Leeds LS6 · 63 data points across 4 risk categories
EPC D (61)Flood Zone 1FreeholdNo enforcement
Annual energy cost: est. £2,340 (EPC D, score 61)
EPC D → C retrofit: ~£7,500 estimated
Valuation impact: −£5,850 applied to offer range
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Negotiation Strategy

Your specific offer range, the evidence behind it, negotiation leverage score, and the exact arguments to use when the agent pushes back.

Full methodology →
Sample · 3-bed semi, Leamington Spa CV31 · 26 negotiation inputs
Negotiation leverage score78% — Strong
Recommended offer range£368,000 – £392,000
EPC D: ~£12,750 retrofit to C — factored into fair value
57 days on market — price resistance signal above comparable evidence
Simple process

From listing to offer-ready.

1

Find the property on Rightmove or Zoopla

Copy the URL from your browser address bar.

2

Paste and pay — £9.99

We pull official data from Land Registry, Environment Agency, EPC Register, and more.

3

Get your offer range by email

A comprehensive analysis with comparable sales, fair value waterfall, sensitivity analysis, and a negotiation strategy with your specific offer range.

What buyers say

Buyers who stopped guessing.

★★★★★

"I had no idea what to offer. The agent kept saying it was priced right. OfferHound showed me three comparable sales in the same road that were all £30,000–£40,000 below the asking price. That's not a guess — that's evidence. I offered accordingly and they accepted."

UK
Property buyer, Leeds
3-bed semi purchase · 2026
★★★★★

"The sensitivity analysis was the most valuable part. Seeing three scenarios — base, bear, and improved — let me understand exactly what I was risking in each offer position. I knew my number going into the negotiation, and I wasn't moved off it."

UK
Property buyer, Bristol
4-bed detached purchase · 2026

Questions about the offer range

OfferHound derives a fair value from Land Registry comparable sold prices within 0.5 miles, weighted by recency, proximity, property type, and floor area. It then applies a documented valuation waterfall — adjustments for EPC rating, time on market, floor area delta vs comparables, condition, and local market direction. The offer range is derived from this fair value with a sensitivity analysis across three scenarios: base case, bear case, and a scenario where market conditions soften.

OfferHound pulls from HM Land Registry Price Paid Data (comparable sold prices), the EPC Register (floor area, energy rating, running costs), the Environment Agency (flood risk), Planning Portal (applications and decisions), Rightmove/Zoopla (listing data, price history, time on market), and Ofsted (school ratings). Every finding is traceable to its official source.

In areas with thin comparable sales data, OfferHound widens the search radius and uses older transactions with appropriate time-decay weighting. The report clearly notes the depth of comparable evidence available and adjusts the confidence interval accordingly — so you always know how much weight to put on the fair value conclusion.

No. OfferHound gives you the data intelligence to negotiate the right price before you commit. A RICS survey assesses physical condition; your solicitor reviews the legal title. Most buyers use OfferHound to negotiate price, then commission a survey once under offer — in that order, since you don't want to spend survey fees on a property you haven't agreed a price on.

We pull data from multiple government sources, compile everything, and send your PDF by email. No waiting days for a callback.

Related guides

🏠
First-Time Buyer Analysis

How OfferHound helps first-time buyers negotiate with evidence instead of guesswork.

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How to Negotiate Guide

Evidence-based negotiation tactics, templates, and scripts for UK buyers.

⚖️
Understanding Valuations

How property valuations work — and why asking price is rarely the same as fair value.

📖
How Overpriced Is Your Property?

Using Land Registry data to check if a listing is overpriced — and by how much.

Stop guessing. Start negotiating
from evidence.

A specific offer range, the comparable sales evidence to defend it, and the negotiation arguments to back it up. £9.99.

Easter offer: £24.99 → £9.99. Ends 30 April 2026.