<b></b>The government is proposing introducing locally determined tariffs on new development to replace planning gain policies. It says the new system will put an end to &amp;“negotiated deals behind closed doors between developers and local authorities&amp;”. It will bring &amp;“more certainty for developers and more affordable homes for key workers&amp;”.<br>&amp;“Developers buying a piece of land currently have little idea of what a local authority might demand in return for planning permission,&amp;” said local government secretary Stephen Byers. &amp;“With these new proposals developers will know exactly what they will be required to pay before submitting a planning application.&amp;”<p></p><p>But housebuilders fear that because the proposals do not limit local authority demands when negotiating planning gain there could be problems.</p><p>Pierre Williams, HBF spokesman, said: &amp;“Far from doing deals behind closed doors, the industry would welcome the opportunity of showing communities how much it contributes to social housing, infrastructure, and the many other public amenities that used to be paid for by government and local authorities themselves.</p><p>&amp;“Developers will find it helpful knowing what is expected of them. But the current proposals effectively give local authorities carte blanche to demand whatever they want. If demands made upon them are too great developers will be forced …